{"pageNumber":"154","pageRowStart":"3825","pageSize":"25","recordCount":6233,"records":[{"id":25712,"text":"wri984220 - 1999 - Potentiometric levels and water quality in the aquifers underlying Belvidere, Illinois, 1993–96","interactions":[],"lastModifiedDate":"2024-10-30T18:36:47.762909","indexId":"wri984220","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4220","displayTitle":"Potentiometric Levels and Water Quality in the Aquifers Underlying Belvidere, Illinois, 1993–96","title":"Potentiometric levels and water quality in the aquifers underlying Belvidere, Illinois, 1993–96","docAbstract":"<p>In 1992, the U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency (USEPA), began a study of the hydrogeology and water quality of the aquifers underlying the vicinity of Belvidere, Boone County, Ill. Previously, volatile organic compounds (VOC's) and other constituents of industrial origin were detected in one or more ground-water samples from about 100 of the approximately 700 monitoring and water-supply wells in the area, including the 8 municipal wells in Belvidere. A glacial drift aquifer underlies at least 50 percent of the 80-square-mile study area; bedrock aquifers that underlie virtually all of the study area include the Galena-Platteville, St. Peter Sandstone, Ordovician, and Cambrian-Ordovician aquifers. </p><p>During 1993, water levels were measured in 152 wells and water-quality samples were collected from 97 wells distributed throughout the study area. During 1994–96, similar data were collected from 31 wells. Potentiometric levels in the glacial drift and Galena-Platteville aquifers are similar and range from about 750 to 900 feet above sea level. The potentiometric surfaces of the aquifers are subdued representations of the land surface. Horizontal ground-water flow in the aquifers primarily is towards the Kishwaukee River, which flows through the central part of the study area, and its principal tributaries. Vertical ground-water flow appears to be downward at most locations in the study area, particularly in the urbanized areas affected by pumping of the Belvidere municipal wells and upland areas remote from the principal surface-water drainages. Flow appears to be upward between the Galena-Platteville and glacial drift aquifers where ground water discharges to the Kishwaukee River and its principal tributaries. </p><p>All water samples were analyzed for VOC's. Selected samples also were analyzed for trace metals, cyanide, semivolatile organic compounds, or other constituents. VOC's were detected in samples from 50 wells (52 percent of total wells sampled). Twenty-seven specific VOC's were identified in the samples. Samples were collected from six municipal wells in use during the study; two wells were not in use because one or more VOC's exceeded maximum contaminant levels (MCL's). Two VOC's were detected in one of the samples at concentrations below MCL's established by the USEPA for protection of public-water supplies. Samples from 21 wells had at least one VOC detected at a concentration above MCL's. The VOC's detected above MCL's and their maximum concentrations were 1,2-dichloroethene (total), 470 micrograms per liter; trichloroethene (TCE), 360 micrograms per liter; tetrachloroethene (PCE), 82 micrograms per liter; benzene, 53 micrograms per liter; and vinyl chloride, 11 micrograms per liter. TCE and PCE were the most frequently detected VOC's and generally had the highest concentrations. VOC's with concentrations above MCL's were detected in samples from 15 wells open to the glacial drift aquifer and 6 wells open to the Galena-Platteville aquifer. </p><p>Generally, the concentrations of VOC's were higher, and number and type of VOC's detected were greater in the glacial drift aquifer than in the Galena-Platteville aquifer and the deeper bedrock aquifers. The high concentrations and spatial distribution of VOC's in the glacial drift aquifer usually were related to nearby sources of contamination. Except in the immediate vicinity of a known hazardous-waste site, possible sources of VOC's in the bedrock aquifers were difficult to identify in the study area; VOC concentrations at most locations in the bedrock aquifers were below 5 micrograms per liter. Most locations where VOC's were detected in the glacial and bedrock aquifers were within about 1,000 feet of the Kishwaukee River. Hydrogeologic factors that affect the distribution of VOC's in the aquifers include ground-water flow through (1) the glacial drift aquifer with discharge to the nearby Kishwaukee River; and (2) the weathered-surface deposits, bedding-plane&nbsp;partings, and fractures in the Galena-Platteville aquifer. One bedding-plane parting intersecting wells that represent an area of about 1.5 square miles has a horizontal hydraulic conductivity as high as 220 feet per day. Pumping of high-capacity wells may contribute to the widespread distribution of VOC’s at low concentrations in the bedrock aquifers.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri984220","collaboration":"Prepared in cooperation with the U.S. Environmental Protection Agency","usgsCitation":"Mills, P., Thomas, C., Brown, T., Yeskis, D., and Kay, R., 1999, Potentiometric levels and water quality in the aquifers underlying Belvidere, Illinois, 1993–96: U.S. Geological Survey Water-Resources Investigations Report 98-4220, Report: v, 106 p.; 2 Plates: 31.33 x 34.65 inches and 29.39 x 34.79 inches, https://doi.org/10.3133/wri984220.","productDescription":"Report: v, 106 p.; 2 Plates: 31.33 x 34.65 inches and 29.39 x 34.79 inches","costCenters":[{"id":344,"text":"Illinois Water Science Center","active":true,"usgs":true}],"links":[{"id":95555,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1998/4220/plate-2.pdf","text":"Plate 2","linkFileType":{"id":1,"text":"pdf"},"description":"WRI 98–4220 Plate 2"},{"id":95554,"rank":3,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1998/4220/plate-1.pdf","text":"Plate 1","linkFileType":{"id":1,"text":"pdf"},"description":"WRI 98–4220 Plate 1"},{"id":156887,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1998/4220/coverthb.jpg"},{"id":361757,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1998/4220/wrir98_4220.pdf","text":"Report","linkFileType":{"id":1,"text":"pdf"},"description":"WRI 98–4220"},{"id":463438,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_19292.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Illinois","city":"Belvidere","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -88.97003173828125,\n              42.16340342422401\n            ],\n            [\n              -88.758544921875,\n              42.16340342422401\n            ],\n            [\n              -88.758544921875,\n              42.332153998913704\n            ],\n            [\n              -88.97003173828125,\n              42.332153998913704\n            ],\n            [\n              -88.97003173828125,\n              42.16340342422401\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","contact":"<p>Director,&nbsp;<a href=\"https://www.usgs.gov/centers/cm-water\" data-mce-href=\"https://www.usgs.gov/centers/cm-water\">Central Midwest Water Science Center</a><br>U.S. Geological Survey<br>405 North Goodwin<br>Urbana, IL 61801</p>","tableOfContents":"<ul><li>Abstract</li><li>Introduction</li><li>Description of the Study Area</li><li>Methods of Study</li><li>Representativeness of the Data</li><li>Potentiometric Levels</li><li>Water Quality</li><li>Factors Affecting Distribution of Industrial Constituents</li><li>Summary and Conclusions</li><li>References Cited</li><li>Appendix 1: Abbreviations Used for Organic Constituents and Hazardous-Waste Sites</li><li>Appendix 2: U.S. Environmental Protection Agency Drinking-Water Standards Established Under Guidelines of the Safe Drinking Water Act of 1986</li></ul>","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b28e4b07f02db6b16d0","contributors":{"authors":[{"text":"Mills, P.C. pcmills@usgs.gov","contributorId":3810,"corporation":false,"usgs":true,"family":"Mills","given":"P.C.","email":"pcmills@usgs.gov","affiliations":[{"id":344,"text":"Illinois Water Science Center","active":true,"usgs":true}],"preferred":true,"id":194759,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Thomas, C.A.","contributorId":14385,"corporation":false,"usgs":true,"family":"Thomas","given":"C.A.","email":"","affiliations":[],"preferred":false,"id":194761,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Brown, T.A.","contributorId":12885,"corporation":false,"usgs":true,"family":"Brown","given":"T.A.","email":"","affiliations":[],"preferred":false,"id":194760,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Yeskis, D.J.","contributorId":105334,"corporation":false,"usgs":true,"family":"Yeskis","given":"D.J.","affiliations":[],"preferred":false,"id":194763,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Kay, R.T.","contributorId":72026,"corporation":false,"usgs":true,"family":"Kay","given":"R.T.","email":"","affiliations":[],"preferred":false,"id":194762,"contributorType":{"id":1,"text":"Authors"},"rank":5}]}}
,{"id":25746,"text":"wri994162 - 1999 - Relation of arsenic, iron, and manganese in ground water to aquifer type, bedrock lithogeochemistry, and land use in the New England coastal basins","interactions":[],"lastModifiedDate":"2023-04-03T21:26:49.37968","indexId":"wri994162","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4162","title":"Relation of arsenic, iron, and manganese in ground water to aquifer type, bedrock lithogeochemistry, and land use in the New England coastal basins","docAbstract":"<p>In a study of arsenic concentrations in public-supply wells in the New England Coastal Basins, concentrations at or above 0.005 mg/L (milligrams per liter) were detected in more samples of water from wells completed in bedrock (25 percent of all samples) than in water from wells completed in stratified drift (7.5 percent of all samples). Iron and manganese were detected (at concentrations of 0.05 and 0.03 mg/L, respectively) at approximately the same frequency in water from wells in both types of aquifers.</p><p>Concentrations of arsenic in public-supply wells drilled in bedrock (in the National Water-Quality Assessment Program New England Coastal Basins study unit) vary with the bedrock lithology. Broad groups of lithogeochemical units generalized from bedrock lithologic units shown on state geologic maps were used in the statistical analyses. Concentrations of arsenic in water from public-supply wells in metasedimentary bedrock units that contain slightly to moderately calcareous and calcsilicate rocks (lithogeochemical group M<sub>c</sub>) were significantly higher than the concentrations in five other groups of bedrock units in the study unit. Arsenic was detected, at or above 0.005 mg/L, in water from 44 percent of the wells in the lithogeochemical group M c and in water from less than 28 percent of wells in the five other groups. Additionally, arsenic concentrations in ground water were the lowest in the metasedimentary rocks that are characterized as variably sulfidic (group M<sub>s</sub><span>&nbsp;</span>). Generally, concentrations of arsenic were low in water from bedrock wells in the felsic igneous rocks (group I<sub>f</sub><span>&nbsp;</span>) though locally some bedrock wells in granitic rocks are known to have ground water with high arsenic concentrations, especially in New Hampshire.</p><p>The concentrations of arsenic in ground water also correlate with land-use data; significantly higher concentrations are found in areas identified as agricultural land use than in undeveloped areas. There is, however, more agricultural land in areas overlying the metasedimentary rocks of lithogeochemical groups M<sub>c</sub><span>&nbsp;</span>and the minimally-deformed clastic sediments of group M<sub>md</sub><span>&nbsp;</span>than in areas overlying other lithogeochemical groups. This correlation complicates the interpretation of sources of arsenic to ground water in bedrock. A test of this association revealed that relations between arsenic concentrations and the metasedimentary rocks of group M<sub>c</sub><span>&nbsp;</span>are not weakened when data associated with agricultural land use is removed; the reverse is true, however, if the data associated with the group M<sub>c</sub><span>&nbsp;</span>are removed from the analysis.</p><p>The occurrence and variability of arsenic in water from bedrock supply wells could be related to several factors. These include (1) the distribution and chemical form of arsenic in soils and rocks that are part of the ground-water-flow system, (2) the characteristics that influence the solubility and transport of arsenic in ground water, (3) the differing degrees of vulnerability of ground-water supplies to surface contamination, and (4) the spatial associations between land use, geology, and ground-water-flow patterns. Strong relations between agricultural land use and the metasedimentary rocks of group M<sub>c</sub><span>&nbsp;</span>complicate the interpretation of arsenic source to water in these bedrock aquifers. This is due in part to the past use of arsenical pesticides; additionally, few whole-rock geochemical data are available for the rock types in the lithogeochemical groups of aquifers that contain ground water with elevated concentrations of arsenic. Without such data, identifying specific bedrock types as arsenic sources is not possible. In southern Maine and south-central New Hampshire, and in northern Massachusetts, the few available whole-rock analyses suggest, at least for these local areas, a connection between known bedrock chemistry and ground-water arsenic levels.</p><p>Although the lithogeochemical group and land-use category variables individually describe much of the variance in the concentrations of arsenic in ground water, the lithogeochemical relation is statistically stronger than the land-use relation. Low concentrations of arsenic in water from bedrock public-supply wells are associated with the metasedimentary rocks of group M<sub>s</sub><span>&nbsp;</span>(characterized as variably sulfidic). This association could reflect a variety of factors and suggests that simple dissolution of arsenic-bearing iron phases, such as sulfides, may not explain concentrations of arsenic in water in this bedrock aquifer group. Whole-rock geochemical data and more complete water-chemistry data, as well as studies of historical variation of arsenic concentrations (time-line studies), and site-specific studies, will be critical in addressing the arsenic source issue.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri994162","usgsCitation":"Ayotte, J., Nielsen, M.G., Robinson, G.R., and Moore, R.B., 1999, Relation of arsenic, iron, and manganese in ground water to aquifer type, bedrock lithogeochemistry, and land use in the New England coastal basins: U.S. Geological Survey Water-Resources Investigations Report 99-4162, v, 63 p., https://doi.org/10.3133/wri994162.","productDescription":"v, 63 p.","costCenters":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true},{"id":371,"text":"Maine Water Science Center","active":true,"usgs":true},{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"links":[{"id":156171,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":415127,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_22932.htm","linkFileType":{"id":5,"text":"html"}},{"id":1865,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri994162","linkFileType":{"id":5,"text":"html"}}],"country":"United States","otherGeospatial":"New England coastal basins","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -69.083,\n              46\n            ],\n            [\n              -72,\n              46\n            ],\n            [\n              -72,\n              41.3\n            ],\n            [\n              -69.083,\n              41.3\n            ],\n            [\n              -69.083,\n              46\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac9e4b07f02db67c303","contributors":{"authors":[{"text":"Ayotte, Joseph D. jayotte@usgs.gov","contributorId":1802,"corporation":false,"usgs":true,"family":"Ayotte","given":"Joseph D.","email":"jayotte@usgs.gov","affiliations":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":false,"id":194900,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Nielsen, Martha G. 0000-0003-3038-9400 mnielsen@usgs.gov","orcid":"https://orcid.org/0000-0003-3038-9400","contributorId":4169,"corporation":false,"usgs":true,"family":"Nielsen","given":"Martha","email":"mnielsen@usgs.gov","middleInitial":"G.","affiliations":[{"id":37947,"text":"Upper Midwest Water Science Center","active":true,"usgs":true}],"preferred":true,"id":194902,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Robinson, Gilpin R. Jr. grobinso@usgs.gov","contributorId":3083,"corporation":false,"usgs":true,"family":"Robinson","given":"Gilpin","suffix":"Jr.","email":"grobinso@usgs.gov","middleInitial":"R.","affiliations":[{"id":245,"text":"Eastern Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":false,"id":194901,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Moore, Richard B. rmoore@usgs.gov","contributorId":1464,"corporation":false,"usgs":true,"family":"Moore","given":"Richard","email":"rmoore@usgs.gov","middleInitial":"B.","affiliations":[{"id":405,"text":"NH/VT office of New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":194899,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":25498,"text":"wri984208 - 1999 - Evaluation of surface-water/ground-water interactions in the Santa Clara River Valley, Ventura County, California","interactions":[],"lastModifiedDate":"2012-02-02T00:08:14","indexId":"wri984208","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4208","title":"Evaluation of surface-water/ground-water interactions in the Santa Clara River Valley, Ventura County, California","docAbstract":"The interactions of surface water and ground water along the Santa Clara River in Ventura County, California, were evaluated by analyzing river-discharge and water-quality data and geohydrologic information collected by the U.S. Geological Survey between 1993 and 1995 for the Piru, Fillmore, and Santa Paula subbasins. Measurements of discharge and water quality were made at multiple locations along the Santa Clara River and its tributaries at eight different time periods during different releases from Lake Piru. Geologic, hydraulic, and water-quality data were collected from three new multiple-completion ground-water monitoring wells. These data, together with data collected as part of the U.S. Geological Survey Southern California Regional Aquifer-System Analysis (RASA) study, were analyzed in order to quantify rates and locations of ground-water recharge and discharge within the river, characterize the correlation of recharge and discharge rates with ground-water conditions and reservoir releases, and better characterize the three-dimensional ground-water flow system.\r\n Analysis of the data indicates that the largest amount of ground-water recharge from the river consistently occurs in the Piru subbasin. Some ground-water recharge from the river may occur in the upper part of the Fillmore subbasin. Increases in sulfate concentrations indicate that increases in flow at the lower ends of the Piru and Fillmore subbasins result from high-sulfate ground-water discharge. Increases in flow in the lower part of the Santa Paula subbasin are not accompanied by significant sulfate increases. Several sets of regressions indicate possible correlation between net flow changes in the river and depths to ground water and release rates from Lake Piru. These statistical relations may be of use for evaluating alternative Lake Piru release strategies.\r\n Data on the stable isotopes of hydrogen and oxygen from the ground-water monitoring wells that were installed as part of this investigation were used to distinguish between zones affected by recharge from the Santa Clara River and zones affected by recharge from local precipitation. Tritium data from a new multiple-completion monitoring site indicate that near the river in the upper Santa Paula subbasin, recent (post-1950) recharge water is not present at depths greater than about 350 feet below land surface. Water-level and lithologic data from the monitoring site indicate that the river and the Shallow aquifer have only limited hydraulic connection to the underlying aquifers at this location. Water-level data from the Shallow aquifer and from an in-stream drive point were used in an analytic model to estimate hydraulic properties governing stream?aquifer interactions in the upper Santa Paula subbasin. Hydraulic conductivities in all the USGS monitoring wells were estimated on the basis of slug tests.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey ;\r\nInformation Services [distributor],","doi":"10.3133/wri984208","usgsCitation":"Reichard, E.G., Crawford, S.M., Paybins, K.S., Martin, P., Land, M., and Nishikawa, T., 1999, Evaluation of surface-water/ground-water interactions in the Santa Clara River Valley, Ventura County, California: U.S. Geological Survey Water-Resources Investigations Report 98-4208, v, 58 p. :ill., maps ;28 cm., https://doi.org/10.3133/wri984208.","productDescription":"v, 58 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":95533,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1998/4208/report.pdf","size":"7530","linkFileType":{"id":1,"text":"pdf"}},{"id":157051,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1998/4208/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac5e4b07f02db679dcf","contributors":{"authors":[{"text":"Reichard, Eric George 0000-0002-7310-3866","orcid":"https://orcid.org/0000-0002-7310-3866","contributorId":86807,"corporation":false,"usgs":true,"family":"Reichard","given":"Eric","email":"","middleInitial":"George","affiliations":[],"preferred":false,"id":193943,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Crawford, Steven M.","contributorId":80714,"corporation":false,"usgs":true,"family":"Crawford","given":"Steven","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":193942,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Paybins, Katherine S. 0000-0002-3967-5043 kpaybins@usgs.gov","orcid":"https://orcid.org/0000-0002-3967-5043","contributorId":2805,"corporation":false,"usgs":true,"family":"Paybins","given":"Katherine","email":"kpaybins@usgs.gov","middleInitial":"S.","affiliations":[{"id":642,"text":"West Virginia Water Science Center","active":true,"usgs":true}],"preferred":true,"id":193941,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Martin, Peter pmmartin@usgs.gov","contributorId":799,"corporation":false,"usgs":true,"family":"Martin","given":"Peter","email":"pmmartin@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":193938,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Land, Michael 0000-0001-5141-0307 mtland@usgs.gov","orcid":"https://orcid.org/0000-0001-5141-0307","contributorId":1479,"corporation":false,"usgs":true,"family":"Land","given":"Michael","email":"mtland@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":false,"id":193939,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Nishikawa, Tracy 0000-0002-7348-3838 tnish@usgs.gov","orcid":"https://orcid.org/0000-0002-7348-3838","contributorId":1515,"corporation":false,"usgs":true,"family":"Nishikawa","given":"Tracy","email":"tnish@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":193940,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}}
,{"id":30388,"text":"wri994195 - 1999 - Evaluation of the effectiveness of an urban stormwater treatment unit in Madison, Wisconsin, 1996-97","interactions":[],"lastModifiedDate":"2017-06-10T11:19:01","indexId":"wri994195","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4195","title":"Evaluation of the effectiveness of an urban stormwater treatment unit in Madison, Wisconsin, 1996-97","docAbstract":"<p>An urban stormwater treatment unit was tested as part of an ongoing program of urban nonpoint- pollution research in Madison, Wis. Flow measurements were made and water samples were collected at the inlet to, outlet from, and bypass around the treatment chamber of the device that was installed to collect the runoff from a city maintenance yard.</p>\n<p>About 90 percent of the runoff water from the 4.3-acre basin was treated by the unit. The remaining 10 percent bypassed the treatment chamber when the flow rate reached approximately 500 gallons per minute.</p>\n<p>A 24-percent difference between the estimated amount (405 kilograms) and the actual amount (536 kilograms) of retained material in the treatment chamber may be attributed to bedload material that the automatic samplers could not effectively collect. Assuming this, 8 percent of the total mass in the untreated runoff water was estimated as the unsampled bedload.</p>\n<p>On the basis of water-sample data collected over the course of the study, the suspended solids removal efficiency of treatment chamber was about 25 percent, and the efficiency of the unit as a whole was 21 percent. If the unsampled bedload material was accounted for, the treatment-chamber efficiency was 33 percent.</p>\n<p>About 19 percent of the total phosphorus was removed from the water that passed through the treatment chamber and 17 percent was removed by the unit as a whole. Total polycyclic aromatic hydrocarbon (PAH) loads were reduced about 39 percent by the treatment chamber and 34 percent by the unit as a whole; these were some of the most effectively removed constituents. Total metals were reduced about 20 to 30 percent by both the treatment chamber and the unit as a whole. In general, dissolved constituents were unaffected by the unit.</p>\n<p>The material retained in the treatment chamber had high concentrations of lead and PAH and may be subject to special disposal restrictions based on those concentrations and the presence of benzo(a)anthracene. The chemical makeup of the retained material in other similar stormwater treatment units will probably vary depending on the land use and activities in the drainage basin.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri994195","collaboration":"Prepared in cooperation with the City of Madison, and the Wisconsin Department of Natural Resources","usgsCitation":"Waschbusch, R.J., 1999, Evaluation of the effectiveness of an urban stormwater treatment unit in Madison, Wisconsin, 1996-97: U.S. Geological Survey Water-Resources Investigations Report 99-4195, v, 49 p., https://doi.org/10.3133/wri994195.","productDescription":"v, 49 p.","numberOfPages":"60","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":59165,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1999/4195/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":2510,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri994195","linkFileType":{"id":5,"text":"html"}},{"id":124934,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1999/4195/report-thumb.jpg"}],"country":"United States","state":"Wisconsin","county":"Dane County","city":"Madison","otherGeospatial":"Lake Mendota, Lake Menona","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -89.55917358398438,\n              43.01820348594956\n            ],\n            [\n              -89.55917358398438,\n              43.177141346631714\n            ],\n            [\n              -89.21241760253906,\n              43.177141346631714\n            ],\n            [\n              -89.21241760253906,\n              43.01820348594956\n            ],\n            [\n              -89.55917358398438,\n              43.01820348594956\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49f3e4b07f02db5ef3fd","contributors":{"authors":[{"text":"Waschbusch, Robert J. 0000-0002-4069-0267 rjwaschb@usgs.gov","orcid":"https://orcid.org/0000-0002-4069-0267","contributorId":3447,"corporation":false,"usgs":true,"family":"Waschbusch","given":"Robert","email":"rjwaschb@usgs.gov","middleInitial":"J.","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":203167,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":30389,"text":"wri994021 - 1999 - Sources of phosphorus in stormwater and street dirt from two urban residential basins in Madison, Wisconsin, 1994-95","interactions":[],"lastModifiedDate":"2015-10-27T15:15:43","indexId":"wri994021","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4021","title":"Sources of phosphorus in stormwater and street dirt from two urban residential basins in Madison, Wisconsin, 1994-95","docAbstract":"<p>Eutrophication is a common problem for lakes in agricultural and urban areas, such as Lakes Wingra and Mendota in Madison, Wisconsin. This report describes a study to estimate the sources of phosphorus, a major contributor to eutrophication, to Lakes Wingra and Mendota from two small urban residential drainage basins. The Monroe Basin empties into Lake Wingra, and the Harper Basin into Lake Mendota. Phosphorus data were collected from streets, lawns, roofs, driveways, and parking lots (source areas) within these two basins and were used to estimate loads from each area. In addition to the samples collected from these source areas, flow-composite samples were collected at monitoring stations located at the watershed outfalls (storm sewers); discharge and rainfall also were measured. Resulting data were then used to calibrate the Source Loading and Management Model (SLAMM, version 6.3, copyright 1993, Pitt &amp; Vorhees) for conditions in the city of Madison and determine within these basins which of the source areas are contributing the most phosphorus.</p>\n<p>Water volumes in the calibrated model were calculated to within 23 percent and 24 percent of those measured at the outfalls of each of the basins. These water volumes were applied to the suspended- solids and phosphorus concentrations that were used to calibrate SLAMM for suspended-solids and phosphorus loads. Suspended-solids loads were calculated to be within 4 percent and 17 percent, total-phosphorus loads within 24 percent and 28 percent, and dissolved-phosphorus loads within 9 percent and 10 percent of those measured at the storm-sewer outfall at the Monroe and Harper basins, respectively.</p>\n<p>Lawns and streets are the largest sources of total and dissolved phosphorus in the basins. Their combined contribution was approximately 80 percent, with lawns contributing more than the streets. Streets were the largest source of suspended solids.</p>\n<p>Street-dirt samples were collected using industrial vacuum equipment. Leaves in these samples were separated out and the remaining sediment was sieved into &gt;250 mm, 250-63 mm, 63-25 mm, &lt;25 mm size fractions and were analyzed for total phosphorus. Approximately 75 percent of the sediment mass resides in the &gt;250 mm size fractions. Less than 5 percent of the mass can be found in the particle sizes less than 63 mm. The &gt;250 mm size fraction also contributed nearly 50 percent of the total-phosphorus mass and the leaf fraction contributed an additional 30 percent. In each particle size, approximately 25 percent of the total-phosphorus mass is derived from leaves or other vegetation.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri994021","collaboration":"Prepared in cooperation with the City of Madison, Wisconsin Department of Natural Resources","usgsCitation":"Waschbusch, R.J., Selbig, W., and Bannerman, R.T., 1999, Sources of phosphorus in stormwater and street dirt from two urban residential basins in Madison, Wisconsin, 1994-95: U.S. Geological Survey Water-Resources Investigations Report 99-4021, iv, 47 p., https://doi.org/10.3133/wri994021.","productDescription":"iv, 47 p.","numberOfPages":"51","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":160948,"rank":2,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":2511,"rank":3,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri994021","linkFileType":{"id":5,"text":"html"}},{"id":310688,"rank":1,"type":{"id":11,"text":"Document"},"url":"https://wi.water.usgs.gov/pubs/WRIR-99-4021/WRIR-99-4021.pdf"}],"country":"United States","state":"Wisconsin","county":"Dane County","city":"Madison","otherGeospatial":"Lake Mendota, Lake Menona, Lake Wingra","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -89.57015991210938,\n              43.038783344984836\n            ],\n            [\n              -89.57015991210938,\n              43.174136889598124\n            ],\n            [\n              -89.27215576171874,\n              43.174136889598124\n            ],\n            [\n              -89.27215576171874,\n              43.038783344984836\n            ],\n            [\n              -89.57015991210938,\n              43.038783344984836\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e6e4b07f02db5e75f3","contributors":{"authors":[{"text":"Waschbusch, Robert J. 0000-0002-4069-0267 rjwaschb@usgs.gov","orcid":"https://orcid.org/0000-0002-4069-0267","contributorId":3447,"corporation":false,"usgs":true,"family":"Waschbusch","given":"Robert","email":"rjwaschb@usgs.gov","middleInitial":"J.","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":203168,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Selbig, W.R.","contributorId":102106,"corporation":false,"usgs":true,"family":"Selbig","given":"W.R.","email":"","affiliations":[],"preferred":false,"id":203170,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Bannerman, Roger T. 0000-0001-9221-2905 rbannerman@usgs.gov","orcid":"https://orcid.org/0000-0001-9221-2905","contributorId":5560,"corporation":false,"usgs":true,"family":"Bannerman","given":"Roger","email":"rbannerman@usgs.gov","middleInitial":"T.","affiliations":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"preferred":true,"id":203169,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":26812,"text":"wri994167 - 1999 - Ground-water discharge and nitrate loadings to the coastal bays of Maryland","interactions":[],"lastModifiedDate":"2022-02-18T20:47:47.113609","indexId":"wri994167","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4167","title":"Ground-water discharge and nitrate loadings to the coastal bays of Maryland","docAbstract":"Nitrate in ground water discharged to the Atlantic coastal bays of Maryland enhances the growth of phytoplankton and algae in the bays, which in turn contributes to the process of eutrophication (changes in a body of water as nutrients and sediments accumulate), which is one of the principal environmental problems in the bays. Information on nitrate loading to the bays has been identified as a major data gap by State and Federal resource managers. This report presents results of a study to estimate ground-water discharge and potential nitrate loads to the coastal bays of Maryland, which include Chincoteague, Newport, Sinepuxent, Isle of Wight, and Assawoman Bays.        The nitrate load from the discharge of ground water to the coastal bays is dependent on the concentration of nitrate in the water and the volume of ground water being discharged. Data from 388 wells completed in the surficial aquifer that discharges to the bays were used to construct a map of the distribution of nitrate concentration in the ground water. On the basis of those data, and on several simplifying assumptions, the potential nitrate load to the coastal bays from direct discharge of ground water was estimated to be 272,000 pounds of nitrate per year, distributed throughout the 108-square-mile surface area of the bays.        Nitrate from ground water can also enter the coastal bays by way of base flow to streams that discharge to the bays. The potential nitrate load to the bays from the base flow of streams was estimated to be 862,000 pounds per year, assuming that the concentration of nitrate in stream base flow is 3.2 milligrams per liter, which is the median concentration of nitrate in ground water in the study area.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri994167","usgsCitation":"Dillow, J., and Greene, E.A., 1999, Ground-water discharge and nitrate loadings to the coastal bays of Maryland: U.S. Geological Survey Water-Resources Investigations Report 99-4167, 8 p., https://doi.org/10.3133/wri994167.","productDescription":"8 p.","costCenters":[],"links":[{"id":396194,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_22951.htm"},{"id":158425,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"country":"United States","state":"Maryland","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -75.6134033203125,\n              37.792422407988575\n            ],\n            [\n              -75.0531005859375,\n              37.792422407988575\n            ],\n            [\n              -75.0531005859375,\n              38.44068226417387\n            ],\n            [\n              -75.6134033203125,\n              38.44068226417387\n            ],\n            [\n              -75.6134033203125,\n              37.792422407988575\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aafe4b07f02db66d2cb","contributors":{"authors":[{"text":"Dillow, Jonathan J.A.","contributorId":18412,"corporation":false,"usgs":true,"family":"Dillow","given":"Jonathan J.A.","affiliations":[],"preferred":false,"id":197050,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Greene, Earl A. 0000-0002-9479-0829 eagreene@usgs.gov","orcid":"https://orcid.org/0000-0002-9479-0829","contributorId":3518,"corporation":false,"usgs":true,"family":"Greene","given":"Earl","email":"eagreene@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":197049,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":29462,"text":"wri984218 - 1999 - Processes affecting dissolved-oxygen concentrations in the lower reaches of Middle Fork and South Fork Beargrass Creek, Jefferson County, Kentucky","interactions":[],"lastModifiedDate":"2014-04-10T08:17:40","indexId":"wri984218","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4218","title":"Processes affecting dissolved-oxygen concentrations in the lower reaches of Middle Fork and South Fork Beargrass Creek, Jefferson County, Kentucky","docAbstract":"This report provides data on dissolved-oxygen\n(DO) concentrations and identifies the environmental\nprocesses that most affect DO concentrations\nduring base-flow periods in the lower\nreaches of Middle Fork and South Fork Beargrass\nCreek in Jefferson County, Kentucky. These\nreaches are affected by inputs from combined-sewer\noverflows. Sections of the lower reaches of\nthe two streams run through single-family residential\nareas and public parks that are used extensively\nby local residents during the summer.\nRecreational fishing and wading also are common\nin the Middle Fork reach.\nContinuous-record data collected during the\nsummer and early fall (July-September 1996 on\nthe Middle Fork and July-October 1995 on the\nSouth Fork) at three monitoring sites along each\nreach indicate generally decreasing DO concentrations\nin the downstream direction except for\nthe South Fork Beargrass Creek at Winter Avenue\nsite where channel modifications have resulted in\nhigher velocities along with shallower depths during\nlow-flow conditions. The channel modifications\nat this site increased the reaeration-rate\ncoefficient (a measure of the capacity of the\nstream to absorb oxygen through the air-water\ninterface), increased the potential for algae to\nattach to the rough concrete surface, and\nincreased algal exposure to sunlight.\nSynoptic data available for selected constituent\nconcentrations were used to calibrate and verify\na computer model (U.S. Environmental\nProtection Agency QUAL2E model) capable of\nsimulating processes that affect DO concentrations\nin streams. The results of the study indicate\nthat streamflow, reaeration, and sediment-oxygen\ndemand (SOD) are the factors that most affect net\nproduction and depletion of DO in the lower\nreaches of Middle Fork and South Fork Beargrass\nCreek. For the QUAL2E model, streamflow is\nused in the determination of depth, which in tum\nis used to estimate the consumption of oxygen by\nSOD. Streamflow also is used in the determination\nof the reaeration-rate coefficient. From the\nQUAL2E simulations, DO concentrations (in the\nmass balance) attributed to reaeration and SOD\nwere at least an order of magnitude greater than\nany of the other factors that can affect\nDO concentrations. Large diurnal variability in\nDO concentrations resulted at the monitoring sites\nlocated at upstream and downstream ends of the\nMiddle Fork and South Fork reaches, but as indicated\nin model simulation, the net effect of photosynthesis\nand respiration on DO concentration\nwas small. Nitrogen, ammonia, and carbonaceous\nbiochemical-oxygen demand were present at low\nconcentrations in each of the study reaches; the\nmodel results indicate these constituents did not\nhave a substantial effect on DO concentrations.\nModel simulations indicated that lowering the\nSOD rate by 50 percent would result in a substantial improvement in DO concentrations in the\nMiddle Fork Beargrass Creek reach for extremely\nlow base-flow conditions but would result in only\nlimited improvement in DO concentrations in the\nSouth Fork Beargrass Creek reach. However, no\nsimulations for extremely low base-flow conditions\nwere conducted for the South Fork Beargrass\nCreek reach. More information on SOD is\nneeded for stream reaches affected by periodic\ninputs of effluent. In such stream systems, the\ntemporal and spatial variability of SOD needs to\nbe better defined.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Louisville, KY","doi":"10.3133/wri984218","collaboration":"Prepared in cooperation with the Louisville and Jefferson County Metropolitan Sewer District","usgsCitation":"Ruhl, K.J., and Jarrett, G.L., 1999, Processes affecting dissolved-oxygen concentrations in the lower reaches of Middle Fork and South Fork Beargrass Creek, Jefferson County, Kentucky: U.S. Geological Survey Water-Resources Investigations Report 98-4218, v, 53 p., https://doi.org/10.3133/wri984218.","productDescription":"v, 53 p.","numberOfPages":"58","costCenters":[],"links":[{"id":286095,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1998/4218/report-thumb.jpg"},{"id":286094,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1998/4218/report.pdf"}],"scale":"100000","projection":"Universal Transverse Mercator projection","country":"United States","state":"Kentucky","county":"Jefferson County","otherGeospatial":"Beargrass Creek","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -86.0,38.0 ], [ -86.0,38.375 ], [ -85.375,38.375 ], [ -85.375,38.0 ], [ -86.0,38.0 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9be4b07f02db65e541","contributors":{"authors":[{"text":"Ruhl, Kevin J.","contributorId":35769,"corporation":false,"usgs":true,"family":"Ruhl","given":"Kevin","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":201559,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Jarrett, G. Lynn","contributorId":75577,"corporation":false,"usgs":true,"family":"Jarrett","given":"G.","email":"","middleInitial":"Lynn","affiliations":[],"preferred":false,"id":201560,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":28936,"text":"wri994073 - 1999 - Geohydrology and numerical simulation of the ground-water flow system of Kona, Island of Hawaii","interactions":[],"lastModifiedDate":"2020-09-26T15:47:59.897503","indexId":"wri994073","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4073","displayTitle":"Geohydrology and Numerical Simulation of the Ground-Water Flow System of Kona, Island of Hawaii","title":"Geohydrology and numerical simulation of the ground-water flow system of Kona, Island of Hawaii","docAbstract":"Prior to the early 1990's, ground-water in the Kona area, which is in the western part of the island of Hawaii, was withdrawn from wells located within about 3 mi from the coast where water levels were less than 10 feet above sea level. In 1990, exploratory drilling in the uplands east of the existing coastal wells first revealed the presence of high water levels (greater than 40 feet above sea level) in the Kona area. Measured water levels from 16 wells indicate that high water levels exist in a zone parallel to and inland of the Kona coast, between Kalaoa and Honaunau. Available hydrologic and geophysical evidence is generally consistent with the concept that the high ground-water levels are associated with a buried dike complex. \r\n\r\nA two-dimensional (areal), steady-state, freshwater-saltwater, sharp-interface ground-water flow model was developed for the Kona area of the island of Hawaii, to enhance the understanding of (1) the distribution of aquifer hydraulic properties, (2) the conceptual framework of the ground-water flow system, and (3) the regional effects of ground-water withdrawals on water levels and coastal discharge. The model uses the finite-difference code SHARP. \r\n\r\nTo estimate the hydraulic characteristics, average recharge, withdrawals, and water-level conditions for the period 1991-93 were simulated. The following horizontal hydraulic-conductivity values were estimated: (1) 7,500 feet per day for the dike-free volcanic rocks of Hualalai and Mauna Loa, (2) 0.1 feet per day for the buried dike complex of Hualalai, (3) 10 feet per day for the northern marginal dike zone (north of Kalaoa), and (4) 0.5 feet per day for the southern marginal dike zone between Palani Junction and Holualoa. The coastal leakance was estimated to be 0.05 feet per day per foot. \r\n\r\nMeasured water levels indicate that ground water generally flows from inland areas to the coast. Model results are in general agreement with the limited set of measured water levels in the Kona area. Model results indicate, however, that water levels do not strictly increase in an inland direction and that a ground-water divide exists within the buried dike complex. Data are not available, however, to verify model results in the area near and inland of the model-calculated ground-water divide. \r\n\r\nThree simulations to determine the effects of proposed withdrawals from the high water-level area on coastal discharge and water levels, relative to model-calculated, steady-state coastal discharge and water levels for 1997 withdrawal rates, show that the effects are widespread. During 1997, the total withdrawal of ground water from the high water-level area between Palani Junction and Holualoa was about 1 million gallons per day. Model results indicate that it may not be possible to withdraw 25.6 million gallons per day of freshwater from this area between Palani Junction and Holualoa, but that it may be possible to withdraw between 5 to 8 million gallons per day from the same area. For a proposed withdrawal rate of 5.0 million gallons per day uniformly distributed to 12 sites between Palani Junction and Holualoa, the model-calculated drawdown of 0.01 foot or more extends about 9 miles north-northwest and about 7 miles south of the proposed well sites. In all scenarios, freshwater coastal discharge is reduced by an amount equal to the additional freshwater withdrawal. \r\n\r\nAdditional data needed to improve the understanding of the ground-water flow system in the Kona area include: (1) a wider spatial distribution and longer temporal distribution of water levels, (2) improved information about the subsurface geology, (3) independent estimates of hydraulic conductivity, (4) improved recharge estimates, and (5) information about the vertical distribution of salinity in ground water.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri994073","usgsCitation":"Oki, D.S., 1999, Geohydrology and numerical simulation of the ground-water flow system of Kona, Island of Hawaii: U.S. Geological Survey Water-Resources Investigations Report 99-4073, vi, 70 p., https://doi.org/10.3133/wri994073.","productDescription":"vi, 70 p.","costCenters":[{"id":525,"text":"Pacific Islands Water Science Center","active":true,"usgs":true}],"links":[{"id":159151,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1999/4073/report-thumb.jpg"},{"id":95732,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1999/4073/report.pdf","size":"9541","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Hawaii","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -156.258544921875,\n              18.79191774423444\n            ],\n            [\n              -154.632568359375,\n              18.79191774423444\n            ],\n            [\n              -154.632568359375,\n              20.427012814257385\n            ],\n            [\n              -156.258544921875,\n              20.427012814257385\n            ],\n            [\n              -156.258544921875,\n              18.79191774423444\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1be4b07f02db6a8da8","contributors":{"authors":[{"text":"Oki, Delwyn S. 0000-0002-6913-8804 dsoki@usgs.gov","orcid":"https://orcid.org/0000-0002-6913-8804","contributorId":1901,"corporation":false,"usgs":true,"family":"Oki","given":"Delwyn","email":"dsoki@usgs.gov","middleInitial":"S.","affiliations":[{"id":525,"text":"Pacific Islands Water Science Center","active":true,"usgs":true}],"preferred":true,"id":200646,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":26796,"text":"wri984212 - 1999 - Use of computer programs STLK1 and STWT1 for analysis of stream-aquifer hydraulic interaction","interactions":[],"lastModifiedDate":"2025-01-08T22:58:29.661781","indexId":"wri984212","displayToPublicDate":"2001-02-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4212","title":"Use of computer programs STLK1 and STWT1 for analysis of stream-aquifer hydraulic interaction","docAbstract":"Quantifying the hydraulic interaction of aquifers and streams is important in the analysis of stream base fow, flood-wave effects, and contaminant transport between surface- and ground-water systems. This report describes the use of two computer programs, STLK1 and STWT1, to analyze the hydraulic interaction of streams with confined, leaky, and water-table aquifers during periods of stream-stage fuctuations and uniform, areal recharge. The computer programs are based on analytical solutions to the ground-water-flow equation in stream-aquifer settings and calculate ground-water levels, seepage rates across the stream-aquifer boundary, and bank storage that result from arbitrarily varying stream stage or recharge. Analysis of idealized, hypothetical stream-aquifer systems is used to show how aquifer type, aquifer boundaries, and aquifer and streambank hydraulic properties affect aquifer response to stresses. Published data from alluvial and stratifed-drift aquifers in Kentucky, Massachusetts, and Iowa are used to demonstrate application of the programs to field settings. Analytical models of these three stream-aquifer systems are developed on the basis of available hydrogeologic information. Stream-stage fluctuations and recharge are applied to the systems as hydraulic stresses. The models are calibrated by matching ground-water levels calculated with computer program STLK1 or STWT1 to measured ground-water levels.\r\n\r\nThe analytical models are used to estimate hydraulic properties of the aquifer, aquitard, and streambank; to evaluate hydrologic conditions in the aquifer; and to estimate seepage rates and bank-storage volumes resulting from flood waves and recharge. Analysis of field examples demonstrates the accuracy and limitations of the analytical solutions and programs when applied to actual ground-water systems and the potential uses of the analytical methods as alternatives to numerical modeling for quantifying stream-aquifer interactions.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri984212","usgsCitation":"DeSimone, L.A., and Barlow, P.M., 1999, Use of computer programs STLK1 and STWT1 for analysis of stream-aquifer hydraulic interaction: U.S. Geological Survey Water-Resources Investigations Report 98-4212, v, 61 p., https://doi.org/10.3133/wri984212.","productDescription":"v, 61 p.","costCenters":[{"id":377,"text":"Massachusetts-Rhode Island Water Science Center","active":false,"usgs":true},{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"links":[{"id":158537,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":8645,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/wri/wri98-4212/","linkFileType":{"id":5,"text":"html"}},{"id":465932,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_77842.htm","text":"Cedar River study site, Linn County, Iowa","linkFileType":{"id":5,"text":"html"}},{"id":465933,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_77843.htm","text":"Blackstone River study site, South Grafton, Massachusetts","linkFileType":{"id":5,"text":"html"}},{"id":465934,"rank":5,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_77854.htm","text":"Tennessee River study site, McCracken and Livingston Counties, Kentucky","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49d8e4b07f02db5df7b9","contributors":{"authors":[{"text":"DeSimone, Leslie A. 0000-0003-0774-9607 ldesimon@usgs.gov","orcid":"https://orcid.org/0000-0003-0774-9607","contributorId":195635,"corporation":false,"usgs":true,"family":"DeSimone","given":"Leslie","email":"ldesimon@usgs.gov","middleInitial":"A.","affiliations":[{"id":376,"text":"Massachusetts Water Science Center","active":true,"usgs":true},{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":197018,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Barlow, Paul M. 0000-0003-4247-6456 pbarlow@usgs.gov","orcid":"https://orcid.org/0000-0003-4247-6456","contributorId":1200,"corporation":false,"usgs":true,"family":"Barlow","given":"Paul","email":"pbarlow@usgs.gov","middleInitial":"M.","affiliations":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"preferred":true,"id":197017,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":28401,"text":"wri994129 - 1999 - Characteristics of water-quality data for Lake Houston, selected tributary inflows to Lake Houston, and the Trinity River near Lake Houston (a potential source of interbasin transfer), August 1983-September 1990","interactions":[],"lastModifiedDate":"2024-03-05T21:29:46.399655","indexId":"wri994129","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4129","title":"Characteristics of water-quality data for Lake Houston, selected tributary inflows to Lake Houston, and the Trinity River near Lake Houston (a potential source of interbasin transfer), August 1983-September 1990","docAbstract":"<p>Lake Houston, a reservoir completed in 1954 about 25 miles east-northeast of Houston, Texas, is a principal surface-water source for the city of Houston. The increase in water supply to meet future demands is expected to be accommodated by supplementing surface-water inflows to Lake Houston. The Trinity River is considered a potential source for interbasin transfer of water to Lake Houston. Before beginning to supplement inflows, the City needs to better understand the potential effects on Lake Houston water quality from streams that flow into or might contribute water to Lake Houston. During 1983&ndash;90, the USGS collected 3,727 water-quality samples from 27 sites in Lake Houston, 6 of the 7 main tributaries to the lake, and the Trinity River at Romayor.</p>\n<p>Longitudinal profiles of water temperature, dissolved oxygen, specific conductance, pH, and nutrients from the dam to the East and West Forks of Lake Houston constructed for a winter day and a summer day indicate that in general the lake water is mixed in the winter and stratified in the summer.</p>\n<p>The results of Mann-Whitney rank-sum tests to determine whether there were significant differences between summer and non-summer field measurements, 5-day biological oxygen demand, bacteria, physical and aesthetic properties, nutrients, organic carbon, chlorophyll a, and trace elements in the lake nearest the dam, the East Fork of the lake, and the West Fork of the lake at the same relative depth showed significant differences between summer and non-summer samples for at least one of the three locations at the same relative depth for all 15 properties and constituents tested except specific conductance. The test results indicate that in general Lake Houston is well mixed in the non-summer period and stratified with respect to selected properties and constituents in the summer.</p>\n<p>The results of rank-sum tests to determine whether there were significant differences between field measurements, 5-day biological oxygen demand, physical and aesthetic properties, nutrients, organic carbon, and chlorophyll a in the lake nearest the dam, the East Fork of the lake, and the West Fork of the lake for samples collected during the same season at the same relative depth showed that significant differences were common; generally, the West Fork had the largest median concentrations among the three locations. The tests comparing trace element concentrations between the lake nearest the dam and the East Fork showed mixed results&mdash;large median dissolved manganese concentrations in lake bottom samples in the summer and in East Fork near-surface samples in the non-summer period.</p>\n<p>The results of rank-sum tests comparing selected properties, 5-day biological oxygen demand, bacteria, nutrients, and total organic carbon in the eastern tributaries with those in the western tributaries, in the eastern tributaries with those in the Trinity River, and in the western tributaries with those in the Trinity River during the same season (summer or non-summer) at the same relative streamflow (low-medium or high) showed that significant differences were more common than not. In the comparisons of the eastern tributaries with&nbsp;the western tributaries that resulted in significant differences, medians of the western tributaries were larger for all properties and constituents except total organic carbon; in the comparisons of the eastern tributaries with the Trinity River that resulted in significant differences, medians were larger for the Trinity River in about 60 percent of the tests; and in the comparisons of the western tributaries with the Trinity River that resulted in significant differences, medians were larger for the western tributaries in about 60 percent of the tests.</p>\n<p>In the tests comparing trace elements between the eastern and western tributaries during the same season at the same relative streamflow, five of the eight tests showed no significant differences; between the eastern tributaries and the Trinity River, all eight tests showed significant differences, with eastern tributary medians larger in all tests; and between the western tributaries and the Trinity River, seven of the eight tests showed significant differences, with western tributary medians larger in all seven tests.</p>\n<p>The tests comparing selected properties, 5-day biological oxygen demand, nutrients, and total organic carbon between the eastern tributaries and the East Fork of Lake Houston, between the western tributaries and the West Fork of Lake Houston, and between the Trinity River and the lake nearest the dam, the East Fork, and the West Fork during the same season (summer or nonsummer) yielded significant differences in about 60 percent of the tests. No discernible pattern emerged to associate significant differences with season.</p>\n<p>In the tests comparing trace elements between the tributaries and the respective forks of the lake to which the tributaries drain, iron concentrations were significantly different in three of the four tests, with median concentrations larger in the tributaries. All the tests comparing manganese between the Trinity River and the three locations in the lake yielded significant differences, with larger median concentrations in the lake.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Austin, TX","doi":"10.3133/wri994129","collaboration":"Prepared in cooperation with the City of Houston","usgsCitation":"Liscum, F., Goss, R., and Rast, W., 1999, Characteristics of water-quality data for Lake Houston, selected tributary inflows to Lake Houston, and the Trinity River near Lake Houston (a potential source of interbasin transfer), August 1983-September 1990: U.S. Geological Survey Water-Resources Investigations Report 99-4129, iv, 56 p., https://doi.org/10.3133/wri994129.","productDescription":"iv, 56 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"links":[{"id":426340,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_22509.htm","linkFileType":{"id":5,"text":"html"}},{"id":2283,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri99-4129/","linkFileType":{"id":5,"text":"html"}},{"id":326611,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/wri994129.JPG"}],"country":"United States","state":"Texas","otherGeospatial":"Lake Houston, Trinity River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -95.5,\n              30.5\n            ],\n            [\n              -95.5,\n              29.75\n            ],\n            [\n              -94.75,\n              29.75\n            ],\n            [\n              -94.75,\n              30.5\n            ],\n            [\n              -95.5,\n              30.5\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49dfe4b07f02db5e3727","contributors":{"authors":[{"text":"Liscum, Fred","contributorId":95463,"corporation":false,"usgs":true,"family":"Liscum","given":"Fred","email":"","affiliations":[],"preferred":false,"id":199733,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goss, R.L.","contributorId":83143,"corporation":false,"usgs":true,"family":"Goss","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":199732,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rast, Walter","contributorId":79514,"corporation":false,"usgs":true,"family":"Rast","given":"Walter","affiliations":[],"preferred":false,"id":199731,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":30616,"text":"wri994118 - 1999 - Storage Capacity and Water Quality of Lake Ngardok, Babeldaob Island, Republic of Palau, 1996-98","interactions":[],"lastModifiedDate":"2012-03-08T17:16:15","indexId":"wri994118","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4118","title":"Storage Capacity and Water Quality of Lake Ngardok, Babeldaob Island, Republic of Palau, 1996-98","docAbstract":"A bathymetric survey conducted during March and April, 1996, determined the total storage capacity Lake Ngardok to be between 90 and 168 acre-feet. Elevation-surface area and elevation-capacity curves summarizing the current relations among elevation, surface area, and storage capacity were created from the bathymetric map. Rainfall and lake-elevation data collected from April 1996 to March 1998 indicated that lake levels correlated to rainfall values with lake elevation rising rapidly in response to heavy rainfall and then returning to normal levels within a few days. Mean lake elevation for the 22 month period of data was 59.5 feet which gives a mean storage capacity of 107 acre-feet and a mean surface area of 24.1 acre. A floating mat of reeds, which covered 58 percent of the lake surface area at the time of the bathymetric survey, makes true storage capacity difficult to estimate. \r\n\r\nWater-quality sampling during April 1996 and November 1997 indicated that no U.S. Environmental Protection Agency primary drinking-water standards were violated for analyzed organic and inorganic compounds and radionuclides. With suitable biological treatment, the lake water could be used for drinking-water purposes. Temperature and dissolved oxygen measurements indicated that Lake Ngardok is stratified. Given that air temperature on Palau exhibits little seasonal variation, it is likely that this pattern of stratification is persistent. As a result, complete mixing of the lake is probably rare. Near anaerobic conditions exist at the lake bottom. Low dissolved oxygen (3.2 milligrams per liter) measured at the outflow indicated that water flowing past the outflow was from the deep oxygen-depleted depths of the lake.","language":"ENGLISH","publisher":"Geological Survey (U.S.)","doi":"10.3133/wri994118","collaboration":"Prepared in cooperation with the Republic of Palau","usgsCitation":"Yeung, C., and Wong, M.F., 1999, Storage Capacity and Water Quality of Lake Ngardok, Babeldaob Island, Republic of Palau, 1996-98: U.S. Geological Survey Water-Resources Investigations Report 99-4118, iv, 26 p., https://doi.org/10.3133/wri994118.","productDescription":"iv, 26 p.","costCenters":[{"id":525,"text":"Pacific Islands Water Science Center","active":true,"usgs":true}],"links":[{"id":124101,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/wri_99_4118.jpg"},{"id":13742,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/wri/wri99-4118/","linkFileType":{"id":5,"text":"html"}}],"geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ 134.33333333333334,7.25 ], [ 134.33333333333334,7.75 ], [ 134.75,7.75 ], [ 134.75,7.25 ], [ 134.33333333333334,7.25 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b32e4b07f02db6b42b9","contributors":{"authors":[{"text":"Yeung, Chiu Wang","contributorId":12528,"corporation":false,"usgs":true,"family":"Yeung","given":"Chiu Wang","affiliations":[],"preferred":false,"id":203546,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wong, Michael F.","contributorId":43815,"corporation":false,"usgs":true,"family":"Wong","given":"Michael","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":203547,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":25618,"text":"wri994126 - 1999 - Iron in the aquifer system of Suffolk County, New York, 1990-98","interactions":[],"lastModifiedDate":"2022-02-04T15:25:25.659562","indexId":"wri994126","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4126","title":"Iron in the aquifer system of Suffolk County, New York, 1990-98","docAbstract":"<p>High concentrations of dissolved iron in ground water contribute to the biofouling of public-supply wells, and the treatment and remediation of biofouling are costly. Water companies on Long Island, N.Y., spend several million dollars annually to recondition, redevelop, and replace supply wells and distribution lines; treat dissolved iron with sequestering agents or by filtration; and respond to iron-related complaints by customers. This report summarizes the results of studies done by the U.S. Geological Survey, in cooperation with the Suffolk County Water Authority, to characterize the geochemistry and microbiology of iron in the aquifer system of Suffolk County. This information should be helpful for the siting and operation of supply wells.</p><p>Concentrations of dissolved iron in Long Island's ground water, and the frequency of iron biofouling of wells, are highest in ground-water-discharge zones, particularly near the south shore. Ground water along a deep north-south flowpath of the Magothy aquifer in southwestern Suffolk County becomes anaerobic (oxygen deficient) and Fe(III) reducing at a distance of 8 to 10 kilometers south of the ground-water divide, and this change coincides with the downgradient increase in dissolved iron concentrations. The distribution of organic carbon, and the distribution and local variations in reactivity of Fe(III), in Magothy aquifer sediments have resulted in localized differences in redox microenvironments. For example, Fe(III)-reducing zones are associated with anaerobic conditions, where relatively large amounts of Fe(III) oxyhydroxide grain coatings are present, whereas sulfate-reducing zones are associated with lignite-rich lenses of silt and clay and appear to have developed in response to the depletion of available Fe(III) oxyhydroxides. The sulfate-reducing zones are characterized by relatively low concentrations of dissolved iron (resulting from iron-disulfide precipitation) and may be large enough to warrant water-supply development.</p><p>Specific-capacity and water-quality data from wells screened in the Magothy aquifer indicate that water from biofouled wells contains higher median concentrations of total and dissolved iron and manganese, total phosphate, and dissolved sulfate, and lower median concentrations of dissolved oxygen and alkalinity, and lower pH, than does water from unaffected wells. Corresponding data from wells screened in the upper glacial aquifer indicate that water from biofouled wells contains higher median concentrations of total and dissolved manganese and dissolved sulfate, and lower pH, than does water from unaffected wells.</p><p>Filamentous bacteria were detected in 31 (or 72 percent) of the 43 biofilm samples obtained from biofouled wells during reconditioning. The predominant filamentous organism was Gallionella ferruginea, a major biofouling agent in the upper glacial and Magothy aquifers throughout Suffolk County. Mineral-saturation indices indicate that most of the well-encrusting material is deposited when the wells are shut down. Furthermore, the use of treated water (which has a high pH and sometimes high concentrations of dissolved iron) for pump prelubrication when wells are shut down could greatly increase the rate of iron oxidation.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri994126","collaboration":"Prepared in cooperation with the Suffolk County Water Authority","usgsCitation":"Brown, C., Walter, D.A., and Colabufo, S., 1999, Iron in the aquifer system of Suffolk County, New York, 1990-98: U.S. Geological Survey Water-Resources Investigations Report 99-4126, 10 p., https://doi.org/10.3133/wri994126.","productDescription":"10 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":474,"text":"New York Water Science Center","active":true,"usgs":true}],"links":[{"id":157247,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1999/4126/coverthb.jpg"},{"id":1941,"rank":100,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1999/4126/wri19994126.pdf","text":"Report","size":"2.41 MB","linkFileType":{"id":1,"text":"pdf"},"description":"WRI 1999-4126"},{"id":395422,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_25645.htm"}],"country":"United States","state":"New York","county":"Suffolk County","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -73.5,\n              40.625\n            ],\n            [\n              -72.667,\n              40.625\n            ],\n            [\n              -72.667,\n              40.875\n            ],\n            [\n              -73.5,\n              40.875\n            ],\n            [\n              -73.5,\n              40.625\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","contact":"<p>Director, New York Water Science Center<br> U.S. Geological Survey<br>425 Jordan Rd<br> Troy, NY 12180<br> (518) 285-5695 <br> <a href=\"http://ny.water.usgs.gov/\" data-mce-href=\"http://ny.water.usgs.gov/\">http://ny.water.usgs.gov/</a></p>","tableOfContents":"<ul><li>Introduction</li><li>Hydrogeologic Setting</li><li>Field and Laboratory Methods</li><li>Iron in the Aquifer System of Suffock County</li><li>Conclusions</li><li>References Cited</li></ul>","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa6e4b07f02db6660d7","contributors":{"authors":[{"text":"Brown, Craig J.","contributorId":104450,"corporation":false,"usgs":true,"family":"Brown","given":"Craig J.","affiliations":[],"preferred":false,"id":194431,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Walter, Donald A. 0000-0003-0879-4477 dawalter@usgs.gov","orcid":"https://orcid.org/0000-0003-0879-4477","contributorId":1101,"corporation":false,"usgs":true,"family":"Walter","given":"Donald","email":"dawalter@usgs.gov","middleInitial":"A.","affiliations":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":194429,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Colabufo, Steven","contributorId":94652,"corporation":false,"usgs":true,"family":"Colabufo","given":"Steven","affiliations":[],"preferred":false,"id":194430,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":25794,"text":"wri984113 - 1999 - Surface-water-quality assessment of the Yakima River basin, Washington: Overview of major findings, 1987-91","interactions":[],"lastModifiedDate":"2021-12-01T19:33:59.256418","indexId":"wri984113","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4113","title":"Surface-water-quality assessment of the Yakima River basin, Washington: Overview of major findings, 1987-91","docAbstract":"<p>Surface-water-quality conditions were assessed in the Yakima River Basin, which drains 6,155 square miles of mostly forested, range, and agricultural land in Washington. The Yakima River Basin is one of the most intensively farmed and irrigated areas in the United States, and is often referred to as the &ldquo;Nation&rsquo;s Fruitbowl.&rdquo; Natural and anthropogenic sources of contaminants and flow regulation control water-quality conditions throughout the basin. This report summarizes the spatial and temporal distribution, sources, and implications of the dissolved oxygen, water temperature, pH, suspended sediment, nutrient, organic compound (pesticide), trace element, fecal indicator bacteria, radionuclide, and aquatic ecology data collected during the 1987&ndash;91 water years.</p>\n<p>The Yakima River descends from a water surface altitude of 2,449 feet at the foot of Keechelus Dam to 340 feet at its mouth downstream from Horn Rapids Dam near Richland. The basin can be divided into three distinct river reaches on the basis of its physical characteristics. The upper reach, which drains the Kittitas Valley, has a high gradient, with an average streambed slope of 14 feet per mile (ft/mi) over the 74 miles from the foot of Keechelus Dam (river mile [RM] 214.5) to just upstream from Umtanum. The middle reach, which drains the Mid Valley, extends a distance of 33 miles from Umtanum (RM 140.4) to just upstream from Union Gap and also has a high gradient, with an average streambed slope of 11 ft/mi. The lower reach of the Yakima River drains the Lower Valley and has an average streambed slope of 7 ft/mi over the 107 miles from Union Gap (RM 107.2) to the mouth of the Yakima River.</p>\n<p>These reaches exhibited differences in water-quality conditions related to the differences in geologic sources of contaminants and land use. Compared with the rest of the basin, the Kittitas Valley and headwaters of the Naches River Subbasin had relatively low concentrations and loads of suspended sediment, nutrients, organic compounds, and fecal indicator bacteria. There were very few failures to meet the Washington State dissolved oxygen standard or exceedances of the water temperature and pH standards in this reach. In general, these areas are considered to be areas of lessdegraded water quality in the basin. The preTertiary metamorphic and intrusive rocks of the Cle Elum and Teanaway River Subbasins, however, were found to be significant geologic sources of antimony, arsenic, chromium, copper, mercury, nickel, selenium, and zinc. As a result, the arsenic, chromium, and nickel concentrations measured in the streambed sediment of the Kittitas Valley were 13 to 74 times higher than those measured in the Lower Valley.</p>\n<p>The Mid and Lower Valleys had similar water-quality conditions, governed by the intensive agricultural and irrigation activities, highly erosive landscapes, and flow regulation. Most of the failures to meet the Washington State standards for dissolved oxygen and exceedances of the standards for water temperature and pH occurred in the Mid and Lower Valleys. Agricultural drains in the Mid and Lower Valleys were found to be significant sources of nutrients, suspended sediment, pesticides, and fecal indicator bacteria. Downstream from the irrigation diversions near Union Gap, summertime streamflow in the Yakima River was drastically reduced to only a few hundred cubic feet per second. In the lower Yakima River, agricultural return flow typically accounts for as much as 80 percent of the main stem summertime flow near the downstream terminus of the basin. Therefore, the water-quality characteristics of the lower Yakima River resemble those of the agricultural drains. The highest fecal bacteria concentrations (35,000 colonies of Escherichia coli per 100 milliliters of water) were measured in the Granger/Sunnyside area, the location of most of the livestock in the basin. The east side area of the Lower Valley (area east of the Yakima River) was the predominant source area for suspended sediment and pesticides in the basin. This area had the largest acreage of irrigated land and generally received the largest application of pesticides. Owing to the highly erosive soils of the area, the suspended sediment load from the east side in June 1989 (320 kilograms per day) was five or more times larger than from any other area, and the loads of several of the more hydrophobic organic compounds were four or more times larger.</p>\n<p>An ecological assessment of the Yakima River Basin ranked physical, chemical, and biological conditions at impaired (degraded) sites against reference sites in an effort to understand how land use changes physical and chemical site characteristics and how biota respond to these changes. For this assessment, the basin was divided into four natural ecological categories: (1) Cascades ecoregion, (2) Eastern Cascades Slopes and Foothills ecoregion, (3) Columbia Basin ecoregion, and (4) large rivers. Each of these categories has a unique combination of climate and landscape features that produces a distinctive terrestrial vegetation assemblage. In the combined Cascades and Eastern Cascades site group, which had the fewest impaired sites, the metals index was the only physical and chemical index that indicated any impairment. The moderate levels of impairment noted in the invertebrate and algal communities were not, however, associated with metals, and may have been related to the effects of logging, although the intensity of logging was not directly quantified in this study. Sites in the Columbia Basin site group were all moderately or severely impaired with the exception of the two reference sites (Umtanum Creek and Satus Creek below Dry Creek), which showed no physical, chemical, or biological impairment. Three sites were heavily affected by agriculture (Granger Drain, Moxee Drain, and Spring Creek) and were listed as severely impaired by most of the physical, chemical, and biological condition indices. Agriculture was the primary cause of the impairment of biological communities in this site group. The primary physical and chemical indicators of agricultural effects were nutrients, pesticides, dissolved solids, and substrate embeddedness, which all tended to increase with agricultural intensity. The biological effects of agriculture were manifested by a decrease in the abundance and number of native species of fish and invertebrates, a shift in algal communities to species indicative of eutrophic conditions, and higher abundances. There was also an increase in the abundance and number of nonnative fish species due to the prevalence of fish that are largely tolerant of nutrient-rich conditions. Main stem (large river) sites downstream from the city of Yakima exhibited severe impairment of fish communities associated with high levels of pesticides in fish tissues and the presence of external anomalies on fish.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Portland, OR","doi":"10.3133/wri984113","usgsCitation":"Morace, J.L., Fuhrer, G.J., Rinella, J.F., McKenzie, S.W., Gannett, M.W., Bramblett, K.L., Pogue, T.R., Skach, K.A., Embrey, S.S., Cuffney, T.F., Meador, M., Porter, S.D., and Gurtz, M.E., 1999, Surface-water-quality assessment of the Yakima River basin, Washington: Overview of major findings, 1987-91: U.S. Geological Survey Water-Resources Investigations Report 98-4113, xii, 119 p., https://doi.org/10.3133/wri984113.","productDescription":"xii, 119 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[],"links":[{"id":158370,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/wri984113.PNG"},{"id":392338,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_19724.htm"},{"id":311182,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1998/4113/report.pdf","text":"Report","linkFileType":{"id":1,"text":"pdf"},"description":"Report"}],"country":"United States","state":"Washington","otherGeospatial":"Yakima River Basin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -121.25885009765625,\n              46.057985244793024\n            ],\n            [\n              -121.25885009765625,\n              46.90524554642923\n            ],\n            [\n              -119.58892822265626,\n              46.90524554642923\n            ],\n            [\n              -119.58892822265626,\n              46.057985244793024\n            ],\n            [\n              -121.25885009765625,\n              46.057985244793024\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae5e4b07f02db68a896","contributors":{"authors":[{"text":"Morace, Jennifer L. 0000-0002-8132-4044 jlmorace@usgs.gov","orcid":"https://orcid.org/0000-0002-8132-4044","contributorId":945,"corporation":false,"usgs":true,"family":"Morace","given":"Jennifer","email":"jlmorace@usgs.gov","middleInitial":"L.","affiliations":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"preferred":true,"id":195099,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Fuhrer, Gregory J. gjfuhrer@usgs.gov","contributorId":944,"corporation":false,"usgs":true,"family":"Fuhrer","given":"Gregory","email":"gjfuhrer@usgs.gov","middleInitial":"J.","affiliations":[],"preferred":true,"id":195098,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Rinella, Joseph F. jrinella@usgs.gov","contributorId":1371,"corporation":false,"usgs":true,"family":"Rinella","given":"Joseph","email":"jrinella@usgs.gov","middleInitial":"F.","affiliations":[],"preferred":true,"id":195100,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"McKenzie, Stuart W.","contributorId":27841,"corporation":false,"usgs":true,"family":"McKenzie","given":"Stuart","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":195102,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Gannett, Marshall W. 0000-0003-2498-2427 mgannett@usgs.gov","orcid":"https://orcid.org/0000-0003-2498-2427","contributorId":2942,"corporation":false,"usgs":true,"family":"Gannett","given":"Marshall","email":"mgannett@usgs.gov","middleInitial":"W.","affiliations":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"preferred":true,"id":579616,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Bramblett, Karen L.","contributorId":149798,"corporation":false,"usgs":false,"family":"Bramblett","given":"Karen","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":579617,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Pogue, Ted R. 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,{"id":28296,"text":"wri984246 - 1999 - Hydrogeology of the surficial aquifer in the vicinity of a former landfill, Naval Submarine Base Kings Bay, Camden County, Georgia","interactions":[],"lastModifiedDate":"2017-01-31T10:18:44","indexId":"wri984246","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4246","title":"Hydrogeology of the surficial aquifer in the vicinity of a former landfill, Naval Submarine Base Kings Bay, Camden County, Georgia","docAbstract":"Neogene and Quaternary sediments constitute the surficial aquifer beneath the study area; in descending order from youngest to oldest these include-the Quaternary undifferentiated surficial sand and Satilla Formation; the Pliocene(?) Cypresshead Formation; and the middle Miocene Coosawhatchie Formation. Beneath the surficial aquifer, the upper Brunswick aquifer consists of part of the lower Miocene Marks Head Formation.\r\n\r\nThe surficial aquifer is divided into three water-bearing zones on the basis of lithologic and geophysical properties of sediments, hydraulic-head differences between zones, and differences in ground-water chemistry. The shallowest zone-the water-table zone-consists of medium to fine sand and clayey sand and is present from land surface to a depth of about 77 feet. Below the water-table zone, the confined upper water-bearing zone consists of medium to very coarse sand and is present from a depth of about 110 to 132 feet. Beneath the upper water-bearing zone, the confined lower water-bearing zone consists of coarse sand and very fine gravel and is present from a depth of about 195 to 237 feet. Hydraulic separation is suggested by differences in water chemistry between the water-table zone and upper water-bearing zone. The sodium chloride type water in the water-table zone differs from the calcium bicarbonate type water in the upper water-bearing zone. Hydraulic separation also is indicated by hydraulic head differences of more than 6.5 feet between the water-table zone and the upper water-bearing zone.\r\n\r\nContinuous and synoptic water-level measurements in the water-table zone, from October 1995 to April 1997, indicate the presence of a water-table high beneath and adjacent to the former landfill-the surface of which varies about 5 feet with time because of recharge and discharge. Water-level data from clustered wells also suggest that restriction of vertical ground-water flow begins to occur at an altitude of about 5 to 10 feet below sea level (35 to 40 feet below land surface) in the water-table zone because of the increasing clay content of the Cypresshead Formation.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey ;\r\nBranch of Information Services [distributor],","doi":"10.3133/wri984246","usgsCitation":"Leeth, D.C., 1999, Hydrogeology of the surficial aquifer in the vicinity of a former landfill, Naval Submarine Base Kings Bay, Camden County, Georgia: U.S. Geological Survey Water-Resources Investigations Report 98-4246, v, 28 p. :ill., maps ;28 cm., https://doi.org/10.3133/wri984246.","productDescription":"v, 28 p. :ill., maps ;28 cm.","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":159367,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":2364,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/wri/wri98-4246/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Georgia","county":"Camden County","otherGeospatial":"Naval Submarine Base Kings Bay","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -83,30 ], [ -83,33 ], [ -80,33 ], [ -80,30 ], [ -83,30 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b24e4b07f02db6ae4b4","contributors":{"authors":[{"text":"Leeth, David C. cleeth@usgs.gov","contributorId":1403,"corporation":false,"usgs":true,"family":"Leeth","given":"David","email":"cleeth@usgs.gov","middleInitial":"C.","affiliations":[],"preferred":true,"id":199546,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":25952,"text":"wri984255 - 1999 - Fraser River watershed, Colorado — Assessment of available water-quantity and water-quality data through water year 1997","interactions":[],"lastModifiedDate":"2022-01-06T21:05:07.466304","indexId":"wri984255","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4255","title":"Fraser River watershed, Colorado — Assessment of available water-quantity and water-quality data through water year 1997","docAbstract":"<p>The water-quantity and water-quality data for the Fraser River watershed through water year 1997 were compiled for ground-water and surface-water sites. In order to assess the water-quality data, the data were related to land use/land cover in the watershed. Data from 81 water-quantity and water-quality sites, which consisted of 9 ground-water sites and 72 surface-water sites, were available for analysis. However, the data were limited and frequently contained only one or two water-quality analyses per site.The Fraser River flows about 28 miles from its headwaters at the Continental Divide to the confluence with the Colorado River. Ground-water resources in the watershed are used for residential and municipal drinking-water supplies. Surface water is available for use, but water diversions in the upper parts of the watershed reduce the flow in the river. Land use/land cover in the watershed is predominantly forested land, but increasing urban development has the potential to affect the quantity and quality of the water resources.Analysis of the limited ground-water data in the watershed indicates that changes in the land use/land cover affect the shallow ground-water quality. Water-quality data from eight shallow monitoring wells in the alluvial aquifer show that iron and manganese concentrations exceeded the U.S. Environmental Protection Agency secondary maximum contaminant level. Radon concentrations from these monitoring wells exceeded the U.S. Environmental Protection Agency proposed maximum contaminant level. The proposed radon contaminant level is currently being revised. The presence of volatile organic compounds at two monitoring wells in the watershed indicates that land use affects the shallow ground water. In addition, bacteria detected in three samples are at concentrations that would be a concern for public health if the water was to be used as a drinking supply. Methylene blue active substances were detected in the ground water at some sites and are a possible indication of contamination from wastewater. Age of the alluvial ground water ranged from 10 to 30 years; therefore, results of land-management practices to improve water quality may not be apparent for many years.Surface-water-quality data for the Fraser River watershed are sparse. The surface-water-quality data show that elevated concentrations of selected constituents generally are related to specific land uses in the watershed. For one sample (about 2 percent; 1 of 53), dissolved manganese concentration exceeded the U.S. Environmental Protection Agency secondary maximum contaminant level. Two samples from two surface-water sites in the watershed exceeded the un-ionized ammonia chronic criterion. Spatial distribution of nutrient species (ammonia, nitrite, nitrate, and total phosphorus) shows that elevated concentrations occur primarily downstream from urban areas. Sites with five or more years of record were analyzed for temporal trends in concentration of nutrient species. Downward trends were identified for ammonia and nitrite for three surface-water sites. For nitrate, no trends were observed at two sites and a downward trend was observed at one site. Total phosphorus showed no trend for the site near the mouth of the Fraser River. Downward trends in the nutrient species may reflect changes in the wastewater-treatment facilities in the watershed. Bacteria sampling completed in the watershed indicates that more bacteria are present in the water near urban settings.The limited ground-water and surface-water data for the Fraser River watershed provide a general assessment of the quantity and quality of these resources. Concentrations of most water-quality constituents generally are less than ground- and surface-water-quality standards, but the presence of bacteria, some volatile organic compounds, methylene blue active substances, and increased nutrients in the water may indicate that land use is affecting the water quality.</p>","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri984255","usgsCitation":"Apodaca, L.E., and Bails, J.B., 1999, Fraser River watershed, Colorado — Assessment of available water-quantity and water-quality data through water year 1997: U.S. Geological Survey Water-Resources Investigations Report 98-4255, v, 58 p., https://doi.org/10.3133/wri984255.","productDescription":"v, 58 p.","costCenters":[],"links":[{"id":393983,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_13256.htm"},{"id":157667,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1966,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri98-4255","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Colorado","otherGeospatial":"Fraser River watershed","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -106.04,\n              39.78\n            ],\n            [\n              -105.696,\n              39.78\n            ],\n            [\n              -105.696,\n              40.105\n            ],\n            [\n              -106.04,\n              40.105\n            ],\n            [\n              -106.04,\n              39.78\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a54e4b07f02db62bff9","contributors":{"authors":[{"text":"Apodaca, Lori Estelle","contributorId":82294,"corporation":false,"usgs":true,"family":"Apodaca","given":"Lori","email":"","middleInitial":"Estelle","affiliations":[],"preferred":false,"id":195534,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bails, Jeffrey B. jbbails@usgs.gov","contributorId":813,"corporation":false,"usgs":true,"family":"Bails","given":"Jeffrey","email":"jbbails@usgs.gov","middleInitial":"B.","affiliations":[],"preferred":true,"id":195533,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":29180,"text":"wri994114 - 1999 - Estimating the magnitude and frequency of floods in rural basins of North Carolina","interactions":[],"lastModifiedDate":"2018-05-08T14:01:09","indexId":"wri994114","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4114","title":"Estimating the magnitude and frequency of floods in rural basins of North Carolina","docAbstract":"<p>A statewide study was conducted to develop two methods for estimating the magnitude and frequency of floods in rural ungaged basins in North Carolina. Flood-frequency estimates for gaged sites in North Carolina were computed by fitting the annual peak flows for each site to a log-Pearson Type III distribution. As part of the computation of flood-frequency estimates for gaged sites, new values for generalized skew coefficients were developed. Basin characteristics for these gaged sites were computed by using a geographic information system and automated computer algorithms. Flood-frequency estimates and basin characteristics for 317 gaged sites were combined to form the data base that was used for this analysis.</p><p>Regional regression analysis, using generalized least-squares regression, was used to develop a set of predictive equations that can be used to estimate the 2-, 5-, 10-, 25-, 50-, 100-, 200-, and 500-year recurrence interval discharges for rural ungaged basins in the Blue Ridge-Piedmont, Coastal Plain, and Sand Hills hydrologic areas. The predictive equations are all functions of drainage area. Average errors of prediction for these regression equations range from 36 to 65 percent.</p><p>A region-of-influence method also was developed that interactively estimates recurrence interval discharges for rural ungaged basins in the Blue Ridge-Piedmont and Coastal Plain hydrologic areas of North Carolina. Regression techniques are used to develop a unique relation between flood discharge and basin characteristics for a subset of gaged sites with similar basin characteristics. This, then, can be used to estimate flood discharges at ungaged sites. Because the computations required for this method are somewhat complex, a computer application was developed that performs the computations and compares the predictive errors for this method. The computer application also includes the option of using the regression equations to compute estimated flood discharges and errors of prediction specific to each ungaged site.</p><p>Root mean square errors, computed for each recurrence interval and hydrologic area, are generally only slightly lower for the region-of-influence method than for the regression equations and do not provide sufficient basis for recommending one method over the other. In addition, the region-of-influence method is a new method that is still being improved. As a result, the regional regression equations are considered to be the primary method for computing flood-frequency estimates at ungaged sites.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri994114","collaboration":"Prepared in cooperation with the North Carolina Department of Transportation","usgsCitation":"Pope, B.F., and Tasker, G.D., 1999, Estimating the magnitude and frequency of floods in rural basins of North Carolina: U.S. Geological Survey Water-Resources Investigations Report 99-4114, iii, 44 p., https://doi.org/10.3133/wri994114.","productDescription":"iii, 44 p.","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":353602,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1999/4114/wri19994114.pdf","text":"Report","size":"415 KB","linkFileType":{"id":1,"text":"pdf"},"description":"WRI 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Carolina\",\"nation\":\"USA  \"}}]}","contact":"<p><a href=\"mailto:dc_sc@usgs.gov\" data-mce-href=\"mailto:dc_sc@usgs.gov\">Director</a>, <a href=\"https://www.usgs.gov/centers/sa-water\" data-mce-href=\"https://www.usgs.gov/centers/sa-water\">South Atlantic Water Science Center </a><br> U.S. Geological Survey<br> 720 Gracern Road<br> Columbia, SC 29210</p>","tableOfContents":"<ul><li>Abstract</li><li>Introduction</li><li>Basin Characteristics</li><li>Estimation of Flood Magnitude and Frequency at Gaged Sites</li><li>Estimation of Flood Magnitude and Frequency at Ungaged Sites</li><li>Application of Methods</li><li>Summary</li><li>References</li><li>Appendix</li></ul>","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49fbe4b07f02db5f49d4","contributors":{"authors":[{"text":"Pope, Benjamin F.","contributorId":12445,"corporation":false,"usgs":true,"family":"Pope","given":"Benjamin","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":511065,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Tasker, Gary D.","contributorId":95035,"corporation":false,"usgs":true,"family":"Tasker","given":"Gary","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":511066,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":26164,"text":"wri984232 - 1999 - Streamflow, base flow, and ground-water recharge in the Housatonic River basin, western Massachusetts and parts of eastern New York and northwestern Connecticut","interactions":[],"lastModifiedDate":"2022-09-19T18:16:48.344","indexId":"wri984232","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4232","title":"Streamflow, base flow, and ground-water recharge in the Housatonic River basin, western Massachusetts and parts of eastern New York and northwestern Connecticut","docAbstract":"Streamflows for selected flow durations from 1 to 99 percent and the August median streamflows were estimated for 11 long-term streamflow-gaging stations in and near the study area. Estimates of streamflow and associated standard errors were determined for selected flow durations from 50 to 99 percent and the August median streamflows for 21 low-flow partial-record stations and for selected flow durations from 1 to 99 percent and the August median streamflows for two partial-record stations and seven short-term discontinued streamflow-gaging stations. Median streamflows per square mile for the 10-, 50-, and 90-percent flow durations and the August median streamflows were 3.90, 1.01, 0.185, and 0.248 cubic feet per second per square mile. Streamflows per square mile at selected flow-duration discharges between 1 and 99 percent at the 41 stations were related to basin characteristics to explain differences in streamflow characteristics. Basin characteristics included basin elevations, extent of stratified-drift deposits, land use, aspect, and underlying bedrock geology types. Most streamflow differences were positively correlated to basin elevation differences, most likely because precipitation increases with elevation, and to stratified-drift deposits, which allow more precipitation to recharge the ground water and to discharge later than do till and bedrock deposits.Mean base flow was computed from continuous records of daily mean discharge at 11 long-term streamflow-gaging stations in and near the study area. Mean annual base flow ranged from 13.4 to 24.5 inches per year. Minimum annual base flow ranged from 45 to 72 percent of mean annual rates at the 11 long-term stations, and the ratio of base flow to streamflow (base-flow index) ranged from 0.55 to 0.80. Base-flow durations between 1 and 99 percent were calculated from streamflow records at the 11 long-term streamflow-gaging stations. Base flow accounted for 45.5 to 85.0 percent of total annual streamflow at the 1- and 99-percent flow durations. Ground-water-recharge rates were computed from continuous records of daily mean discharge at 11 long-term streamflow-gaging stations in and near the study area. Mean annual ground-water-recharge rates ranged from 17.5 to 22.4 inches per year at 10 of the 11 long-term stations. Mean annual ground-water-recharge rates ranged from 2 to 7 inches per year higher than base flow. Minimum annual ground-water-recharge rates ranged from 48 to 72 percent of mean annual ground-water-recharge rates. Mean annual potential ground-water recharge was estimated from monthly climatological data collected at six climatological stations in and near the study area. Mean potential ground-water recharge ranged from about 17.9 to 28.9 inches per year, with a median value of 22.6 inches per year. This median value compares well to that calculated by use of streamflow records at the 11 streamflow-gaging stations (20.0 inches per year).Streamflows per square mile for the 10-, 50-, and 90-percent flow durations at stations in and near the study area were similar to those computed for other unregulated long-term continuous streamflow-gaging stations in central and eastern Massachusetts. Base-flow and ground-water-recharge rates in the study area compared closely to results from other studies in southeastern Massachusetts and Rhode Island, which were based on the same computational methods.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri984232","usgsCitation":"Bent, G.C., 1999, Streamflow, base flow, and ground-water recharge in the Housatonic River basin, western Massachusetts and parts of eastern New York and northwestern Connecticut: U.S. Geological Survey Water-Resources Investigations Report 98-4232, v, 68 p., https://doi.org/10.3133/wri984232.","productDescription":"v, 68 p.","costCenters":[],"links":[{"id":125126,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/wri_98_4232.jpg"},{"id":406989,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_19411.htm","linkFileType":{"id":5,"text":"html"}},{"id":2084,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri984232","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Connecticut,  Massachusetts, New York","otherGeospatial":"Housatonic River basin","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -73.529,\n              42\n            ],\n            [\n              -73.033,\n              42\n            ],\n            [\n              -73.033,\n              42.6\n            ],\n            [\n              -73.529,\n              42.6\n            ],\n            [\n              -73.529,\n              42\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e48b1e4b07f02db53056d","contributors":{"authors":[{"text":"Bent, Gardner C. 0000-0002-5085-3146 gbent@usgs.gov","orcid":"https://orcid.org/0000-0002-5085-3146","contributorId":1864,"corporation":false,"usgs":true,"family":"Bent","given":"Gardner","email":"gbent@usgs.gov","middleInitial":"C.","affiliations":[{"id":466,"text":"New England Water Science Center","active":true,"usgs":true}],"preferred":true,"id":195924,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":26293,"text":"wri984265 - 1999 - Precipitation-runoff, suspended-sediment, and flood-frequency characteristics for urbanized areas of Elmendorf Air Force Base, Alaska","interactions":[],"lastModifiedDate":"2012-02-02T00:08:17","indexId":"wri984265","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4265","title":"Precipitation-runoff, suspended-sediment, and flood-frequency characteristics for urbanized areas of Elmendorf Air Force Base, Alaska","docAbstract":"The developed part of Elmendorf Air Force Base near Anchorage, Alaska, consists of two basins with drainage areas of 4.0 and 0.64 square miles, respectively. Runoff and suspended-sediment data were collected from August 1996 to March 1998 to gain a basic understanding of the surface-water hydrology of these areas and to estimate flood-frequency characteristics. Runoff from the larger basin averaged 6 percent of rainfall, whereas runoff from the smaller basin averaged 13 percent of rainfall. During rainfall periods, the suspended-sediment load transported from the larger watershed ranged from 179 to 21,000 pounds and that from the smaller watershed ranged from 23 to 18,200 pounds. On a yield basis, suspended sediment from the larger watershed was 78 pounds per inch of runoff and from the smaller basin was 100 pounds per inch of runoff. Suspended-sediment loads and yields were generally lower during snowmelt periods than during rainfall periods.\r\n\r\nAt each outfall of the two watersheds, water flows into steep natural channels. Suspended-sediment loads measured approximately 1,000 feet downstream from the outfalls during rainfall periods ranged from 8,450 to 530,000 pounds. On a yield basis, suspended sediment averaged 705 pounds per inch of runoff, more than three times as much as the combined sediment yield from the two watersheds. The increase in suspended sediment is most likely due to natural erosion of the streambanks.\r\n\r\nStreamflow data, collected in 1996 and 1997, were used to calibrate and verify a U.S. Geological Survey computer model?the Distributed Routing Rainfall Runoff Model-Version II (DR3M-II). The model was then used to simulate annual peak discharges and runoff volumes for 1981 to 1995 using historical rainfall records. Because the model indicated that surcharging (or ponding) would occur, no flood-frequency analysis was done for peak discharges. A flood-frequency analysis of flood volumes indicated that a 10-year flood would result in 0.39 inch of runoff (averaged over the entire drainage basin) from the larger watershed and 1.1 inches of runoff from the smaller watershed.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey ;\r\nBranch of Information Services [distributor],","doi":"10.3133/wri984265","usgsCitation":"Brabets, T.P., 1999, Precipitation-runoff, suspended-sediment, and flood-frequency characteristics for urbanized areas of Elmendorf Air Force Base, Alaska: U.S. Geological Survey Water-Resources Investigations Report 98-4265, v, 34 p. :ill., maps ;28 cm.; 17 illus.; 17 tables, https://doi.org/10.3133/wri984265.","productDescription":"v, 34 p. :ill., maps ;28 cm.; 17 illus.; 17 tables","costCenters":[],"links":[{"id":157403,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1994,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://smig.usgs.gov/SMIG/features_0399/elmendorf.html","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b05e4b07f02db6997a4","contributors":{"authors":[{"text":"Brabets, Timothy P. tbrabets@usgs.gov","contributorId":2087,"corporation":false,"usgs":true,"family":"Brabets","given":"Timothy","email":"tbrabets@usgs.gov","middleInitial":"P.","affiliations":[],"preferred":true,"id":196129,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}}
,{"id":29439,"text":"wri994113 - 1999 - Use of environmental tracers to evaluate ground-water age and water-quality trends in a buried-valley aquifer, Dayton area, southwestern Ohio","interactions":[],"lastModifiedDate":"2021-12-30T20:24:30.052365","indexId":"wri994113","displayToPublicDate":"2001-01-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4113","title":"Use of environmental tracers to evaluate ground-water age and water-quality trends in a buried-valley aquifer, Dayton area, southwestern Ohio","docAbstract":"Chlorofluorocarbons (CFC method) and tritium and helium isotopes (3H-3He method) were used as environmental tracers to estimate ground-water age in conjunction with efforts to develop a regional ground-water flow model of the buried-valley aquifer in the Dayton area, southwestern Ohio. This report describes results of CFC and water-quality sampling, summarizes relevant aspects of previously published work, and describes the use of 3H-3He ages to characterize temporal trends in ground-water quality of the buried-valley aquifer near Dayton, Ohio.\r\n\r\nResults of CFC sampling indicate that approximately 25 percent of the 137 sampled wells were contaminated with excess CFC's that rendered the ground water unsuitable for age dating. Evaluation of CFC ages obtained for the remaining samples indicated that the CFC compounds used for dating were being affected by microbial degradation. The degradation occurred under anoxic conditions that are found in most parts of the buried-valley aquifer. As a result, ground-water ages derived by the CFC method were too old and were inconsistent with measured tritium concentrations and independently derived 3H-3He ages. Limited data indicate that dissolved methane may play an important role in the degradation of the CFC's. In contrast, the 3H-3He technique was found to yield ground-water ages that were chemically and hydrologically reasonable.\r\n\r\nGround-water ages derived by the 3H-3He technique were compared to values for selected water- quality characteristics to evaluate temporal trends in ground-water quality in the buried- valley aquifer. Distinct temporal trends were not identified for pH, alkalinity, or calcium and magnesium because of rapid equilibration of ground-water with calcite and dolomite in aquifer sediments. Temporal trends in which the amount of scatter and the number of outlier concentrations increased as ground-water age decreased were noted for sodium, potassium, boron, bromide, chloride, ammonia, nitrate, phosphate, sulfate, and organic carbon. Elevated concentrations of these constituents in shallow ground water are probably related to human activities. Temporal trends in which concentrations declined as ground-water age increased may reflect natural processes that reduce constituent concentrations to low levels. For example, the absence of nitrate detections in ground water recharged before 1980 may indicate natural removal of nitrate by bacterially mediated denitrification. Temporal trends observed for dissolved oxygen, iron, nitrate and silica indicate that these constituents may help identify recently (post-1990) recharged ground water.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri994113","usgsCitation":"Rowe, G.L., Shapiro, S.D., and Schlosser, P., 1999, Use of environmental tracers to evaluate ground-water age and water-quality trends in a buried-valley aquifer, Dayton area, southwestern Ohio: U.S. Geological Survey Water-Resources Investigations Report 99-4113, v, 81 p., https://doi.org/10.3133/wri994113.","productDescription":"v, 81 p.","costCenters":[],"links":[{"id":393698,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_22682.htm"},{"id":58284,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1999/4113/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":159801,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1999/4113/report-thumb.jpg"}],"country":"United States","state":"Ohio","city":"Dayton","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -84.4464111328125,\n              39.5866406233146\n            ],\n            [\n              -83.9739990234375,\n              39.5866406233146\n            ],\n            [\n              -83.9739990234375,\n              39.928694653732364\n            ],\n            [\n              -84.4464111328125,\n              39.928694653732364\n            ],\n            [\n              -84.4464111328125,\n              39.5866406233146\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a17e4b07f02db6045b6","contributors":{"authors":[{"text":"Rowe, Gary L. glrowe@usgs.gov","contributorId":1779,"corporation":false,"usgs":true,"family":"Rowe","given":"Gary","email":"glrowe@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":true,"id":201528,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shapiro, Stephanie Dunkle","contributorId":82738,"corporation":false,"usgs":true,"family":"Shapiro","given":"Stephanie","email":"","middleInitial":"Dunkle","affiliations":[],"preferred":false,"id":201530,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Schlosser, Peter","contributorId":50936,"corporation":false,"usgs":true,"family":"Schlosser","given":"Peter","email":"","affiliations":[],"preferred":false,"id":201529,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
,{"id":25684,"text":"wri984177 - 1999 - Nutrient and suspended-sediment concentrations, trends, loads, and yields from the nontidal part of the Susquehanna, Potomac, Patuxent, and Choptank rivers, 1985-96","interactions":[],"lastModifiedDate":"2023-01-06T20:03:24.948389","indexId":"wri984177","displayToPublicDate":"2000-12-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4177","title":"Nutrient and suspended-sediment concentrations, trends, loads, and yields from the nontidal part of the Susquehanna, Potomac, Patuxent, and Choptank rivers, 1985-96","docAbstract":"The Chesapeake Bay River-Input Monitoring Program was established to characterize the water quality of four major rivers in Maryland, and to quantify the load and the long-term trends in concentrations of nutrients (nitrogen and phosphorus) and suspended sediment transported from the nontidal part of each river to the Chesapeake Bay. As part of the River-Input Monitoring Program, nutrient and suspended-sediment data and streamflow data were collected from 1985 through 1996 at the Susquehanna, Potomac, Patuxent, and Choptank Rivers above the points of tidal influence. The data were used to determine the effectiveness of strategies aimed at reducing nutrients entering Chesapeake Bay from its tributaries.        Of the four rivers studied, the Patuxent River had the highest median concentrations of total nitrogen (2.6 milligrams per liter), total phosphorus (0.17 milligrams per liter), and suspended sediment (45 milligrams per liter) during the 12-year period. From 1985?96, flow-adjusted concentrations of total nitrogen decreased in all but the Potomac River, flow-adjusted concentrations of total phosphorus decreased in all four rivers, and flow-adjusted concentrations of suspended sediment decreased in all but the Susquehanna River.        The rivers that contributed the greatest amount of streamflow to Chesapeake Bay, the Susquehanna and Potomac, also contributed the greatest nutrient loads and suspended-sediment loads to the Bay. The Susquehanna River transported the highest average-annual loads of total phosphorus (4.7 million pounds per year) and total nitrogen (146 million pounds per year), while the Potomac River transported the highest average-annual load of suspended sediment (4.1 billion pounds per year) to the Bay.        Annual loads and annual mean streamflow were normalized by basin drainage area to account for some of the hydrologic differences among the river basins. An increase in precipitation from south to north is still apparent, however, when comparing the water yields among river basins. The Susquehanna River Basin had the highest median annual water yield during the study period; the other three basins all had similar water yields. The Susquehanna River and the Patuxent River had the highest median annual yields of nitrogen during the study period. The Patuxent River also had the highest median annual yield of total phosphorus during the study period, while the Potomac River had the highest median yield of suspended sediment.        Annual yields of total phosphorus and suspended sediment from the Susquehanna and the Choptank River Basins are lower than those from the Potomac and Patuxent River Basins. These relatively small yields from the Susquehanna River may be due to the location of the sampling station below Conowingo Dam. A series of three dams upstream trap a large percentage of sediment and total phosphorus carried by the Susquehanna River to Chesapeake Bay.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri984177","usgsCitation":"Darrell, L.C., Majedi, B.F., Lizarraga, J.S., and Blomquist, J., 1999, Nutrient and suspended-sediment concentrations, trends, loads, and yields from the nontidal part of the Susquehanna, Potomac, Patuxent, and Choptank rivers, 1985-96: U.S. Geological Survey Water-Resources Investigations Report 98-4177, v, 38 p., https://doi.org/10.3133/wri984177.","productDescription":"v, 38 p.","costCenters":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"links":[{"id":95550,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1998/4177/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":156109,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1998/4177/report-thumb.jpg"},{"id":411515,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_19248.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Delaware, Maryland, New Jersey, New York, Pennsylvania, Virginia, West Virginia","otherGeospatial":"Susquehana, Potomac, Patuxent, and Choptank Rivers","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"coordinates\": [\n          [\n            [\n              -80.717,\n              42.467\n            ],\n            [\n              -80.717,\n              37.3\n            ],\n            [\n              -74.633,\n              37.3\n            ],\n            [\n              -74.633,\n              42.467\n            ],\n            [\n              -80.717,\n              42.467\n            ]\n          ]\n        ],\n        \"type\": \"Polygon\"\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4afce4b07f02db6967c9","contributors":{"authors":[{"text":"Darrell, Linda C.","contributorId":6092,"corporation":false,"usgs":true,"family":"Darrell","given":"Linda","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":194649,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Majedi, Brenda F. blfeit@usgs.gov","contributorId":5060,"corporation":false,"usgs":true,"family":"Majedi","given":"Brenda","email":"blfeit@usgs.gov","middleInitial":"F.","affiliations":[],"preferred":true,"id":194648,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lizarraga, Joy S.","contributorId":43735,"corporation":false,"usgs":true,"family":"Lizarraga","given":"Joy","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":194650,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Blomquist, Joel D. jdblomqu@usgs.gov","contributorId":3774,"corporation":false,"usgs":true,"family":"Blomquist","given":"Joel D.","email":"jdblomqu@usgs.gov","affiliations":[{"id":374,"text":"Maryland Water Science Center","active":true,"usgs":true}],"preferred":false,"id":194647,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":28636,"text":"wri994051 - 1999 - Investigation of the distribution of organochlorine and polycyclic aromatic hydrocarbon compounds in the Lower Columbia River using semipermeable-membrane devices","interactions":[],"lastModifiedDate":"2017-02-07T09:10:08","indexId":"wri994051","displayToPublicDate":"2000-12-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4051","title":"Investigation of the distribution of organochlorine and polycyclic aromatic hydrocarbon compounds in the Lower Columbia River using semipermeable-membrane devices","docAbstract":"<p>Organochlorine and polycyclic aromatic hydrocarbon compounds are of concern in the Columbia River Basin because of their adverse effects on fish and wildlife. Because these compounds can have important biological consequences at concentrations well below the detection limits associated with conventional water-sampling techniques, we used semipermeable membrane devices (SPMDs) to sample water, and achieved sub-parts-per-quintillion detection limits. We deployed SPMDs during 1997 low-flow conditions and 1998 high-flow conditions at nine main-stem sites and seven tributary sites, spanning approximately 700 miles of the Columbia River. We also collected streambed sediment from three sites. SPMD extracts and sediments were analyzed for polychlorinated dibenzo-p-dioxins, polychlorinated dibenzofurans, polychlorinated biphenyls, organochlorine pesticides and related transformation products, and polycyclic aromatic hydrocarbons. Our data indicate that (1) in the absence of additional sources, mechanisms such as volatilization, dilution, and settling of suspended particles can act to significantly reduce concentrations of contaminants along the river's flow path, (2) elevated concentrations of contaminants in the Portland-Vancouver area are primarily from local rather than upstream sources, (3) elevated concentrations of many compounds tend to be diluted during periods of high discharge, (4) much higher discharge in the main stem considerably dilutes elevated concentrations entering from tributaries, (5) the distribution of hydrophobic organic compounds in streambed sediment is not necessarily indicative of their distribution in the dissolved-phase, and (6) SPMDs can reveal patterns of contaminant occurrence at environmentally relevant concentrations that are undetectable by conventional water-sampling techniques.</p>","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Portland, OR","doi":"10.3133/wri994051","collaboration":"Prepared in cooperation with the Lower Columbia River Estuary Program and the National Stream Quality Accounting Network Program","usgsCitation":"McCarthy, K.A., and Gale, R.W., 1999, Investigation of the distribution of organochlorine and polycyclic aromatic hydrocarbon compounds in the Lower Columbia River using semipermeable-membrane devices: U.S. Geological Survey Water-Resources Investigations Report 99-4051, ix, 136 p., https://doi.org/10.3133/wri994051.","productDescription":"ix, 136 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true},{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"links":[{"id":158784,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/wri994051.PNG"},{"id":311173,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1999/4051/report.pdf","text":"Report","size":"557.47 KB","linkFileType":{"id":1,"text":"pdf"},"description":"Report"}],"country":"United States","state":"Oregon","otherGeospatial":"Lower Columbia River","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -124.5849609375,\n              42.85985981506279\n            ],\n            [\n              -124.5849609375,\n              46.51351558059737\n            ],\n            [\n              -118.09204101562501,\n              46.51351558059737\n            ],\n            [\n              -118.09204101562501,\n              42.85985981506279\n            ],\n            [\n              -124.5849609375,\n              42.85985981506279\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e47c8e4b07f02db4ab7a3","contributors":{"authors":[{"text":"McCarthy, Kathleen A. mccarthy@usgs.gov","contributorId":1159,"corporation":false,"usgs":true,"family":"McCarthy","given":"Kathleen","email":"mccarthy@usgs.gov","middleInitial":"A.","affiliations":[],"preferred":true,"id":200154,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Gale, Robert W. 0000-0002-8533-141X rgale@usgs.gov","orcid":"https://orcid.org/0000-0002-8533-141X","contributorId":2808,"corporation":false,"usgs":true,"family":"Gale","given":"Robert","email":"rgale@usgs.gov","middleInitial":"W.","affiliations":[{"id":192,"text":"Columbia Environmental Research Center","active":true,"usgs":true}],"preferred":true,"id":200155,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}}
,{"id":25524,"text":"wri984184 - 1999 - Geohydrology of monitoring wells drilled in Oasis Valley near Beatty, Nye County, Nevada, 1997","interactions":[],"lastModifiedDate":"2020-03-02T19:51:49","indexId":"wri984184","displayToPublicDate":"2000-12-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"98-4184","displayTitle":"Geohydrology of Monitoring Wells Drilled in Oasis Valley near Beatty, Nye County, Nevada, 1997","title":"Geohydrology of monitoring wells drilled in Oasis Valley near Beatty, Nye County, Nevada, 1997","docAbstract":"Twelve monitoring wells were installed in 1997 at seven sites in and near Oasis Valley, Nevada. The wells, ranging in depth from 65 to 642 feet, were installed to measure water levels and to collect water-quality samples. Well-construction data and geologic and geophysical logs are presented in this report. Seven geologic units were identified and described from samples collected during the drilling: (1) Ammonia Tanks Tuff; (2) Tuff of Cutoff Road; (3) tuffs, not formally named but informally referred to in this report as the 'tuff of Oasis Valley'; (4) lavas informally named the 'rhyolitic lavas of Colson Pond'; (5) Tertiary colluvial and alluvial gravelly deposits; (6) Tertiary and Quaternary colluvium; and (7) Quaternary alluvium. Water levels in the wells were measured in October 1997 and February 1998 and ranged from about 18 to 350 feet below land surface. Transmissive zones in one of the boreholes penetrating volcanic rock were identified using flowmeter data. Zones with the highest transmissivity are at depths of about 205 feet in the 'rhyolitic lavas of Colson Pond' and 340 feet within the 'tuff of Oasis Valley.'","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri984184","collaboration":"Prepared in cooperation with the U.S. Department of Energy Nevada Operations Office, under Interagency Agreement DE-AI08-96NV11967","usgsCitation":"Robledo, A.R., Ryder, P.L., Fenelon, J.M., and Paillet, F.L., 1999, Geohydrology of monitoring wells drilled in Oasis Valley near Beatty, Nye County, Nevada, 1997 (Version 1.1, Revised Nov 2008): U.S. Geological Survey Water-Resources Investigations Report 98-4184, iii, 40 p., https://doi.org/10.3133/wri984184.","productDescription":"iii, 40 p.","additionalOnlineFiles":"Y","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true},{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"links":[{"id":157673,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":12090,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/wri/wri984184/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Nevada","county":"Nye County","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -117,36 ], [ -117,38 ], [ -115.75,38 ], [ -115.75,36 ], [ -117,36 ] ] ] } } ] }","edition":"Version 1.1, Revised Nov 2008","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1be4b07f02db6a8acc","contributors":{"authors":[{"text":"Robledo, Armando R.","contributorId":27848,"corporation":false,"usgs":true,"family":"Robledo","given":"Armando","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":194041,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Ryder, Philip L.","contributorId":22806,"corporation":false,"usgs":true,"family":"Ryder","given":"Philip","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":194040,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fenelon, Joseph M. 0000-0003-4449-245X jfenelon@usgs.gov","orcid":"https://orcid.org/0000-0003-4449-245X","contributorId":2355,"corporation":false,"usgs":true,"family":"Fenelon","given":"Joseph","email":"jfenelon@usgs.gov","middleInitial":"M.","affiliations":[{"id":465,"text":"Nevada Water Science Center","active":true,"usgs":true}],"preferred":true,"id":194039,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Paillet, Frederick L.","contributorId":38191,"corporation":false,"usgs":true,"family":"Paillet","given":"Frederick","email":"","middleInitial":"L.","affiliations":[],"preferred":false,"id":194042,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}}
,{"id":27515,"text":"wri994050 - 1999 - Characteristics of fractures in crystalline bedrock determined by surface and borehole geophysical surveys, eastern surplus superfund site, Meddybemps, Maine","interactions":[],"lastModifiedDate":"2019-10-16T06:40:04","indexId":"wri994050","displayToPublicDate":"2000-12-01T00:00:00","publicationYear":"1999","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4050","title":"Characteristics of fractures in crystalline bedrock determined by surface and borehole geophysical surveys, eastern surplus superfund site, Meddybemps, Maine","docAbstract":"Surface and borehole geophysical methods were used to determine fracture orientation in crystalline bedrock at the Eastern Surplus Superfund Site in Meddybemps, Maine. Fracture-orientation information is needed to address concerns about the fate of contaminants in ground water at the site. Azimuthal square-array resistivity surveys were conducted at 3 locations at the site, borehole-acoustic televiewer and borehole-video logs were collected in 10 wells, and single-hole directional radar surveys were conducted in 9 wells. Borehole-video logs were used to supplement the results of other geophysical techniques and are not described in this report.\r\n\r\nAnalysis of azimuthal square-array resistivity data indicated that high-angle fracturing generally strikes northeast-southwest at the three locations. Borehole-acoustic televiewer logs detected one prominent low-angle and two prominent high-angle fracture sets. The low-angle fractures strike generally north-northeast and dip about 20 degrees west-northwest. One high-angle fracture set strikes north-northeast and dips east-southeast; the other high-angle set strikes east-northeast and dips south-southeast. Single-hole directional radar surveys identified two prominent fracture sets: a low-angle set striking north-northeast, dipping west-northwest; and a high-angle fracture set striking north-northeast, dipping east-southeast. Two additional high-angle fracture sets are defined weakly, one striking east-west, dipping north; and a second striking east-west, dipping south. \r\n\r\nIntegrated results from all of the geophysical surveys indicate the presence of three primary fracture sets. A low-angle set strikes north-northeast and dips west-northwest. Two high-angle sets strike north-northeast and east-northeast and dip east-southeast and south-southeast. Statistical correction of the fracture data for orientation bias indicates that high-angle fractures are more numerous than observed in the data but are still less numerous than the low-angle fractures. \r\n\r\nThe orientation and distribution of water-yielding fractures sets were determined by correlating the fracture data from this study with previously collected borehole-flowmeter data. The water-yielding fractures are generally within the three prominent fracture sets observed for the total fracture population. The low-angle water-yielding fractures primarily strike north-northeast to west-northwest and dip west-northwest to south-southwest. Most of the high-angle water-yielding fractures strike either north-northeast or east-west and dip east-southeast or south. The spacing between water-yielding fractures varies but the probable average spacing is estimated to be 30 feet for low-angle fractures; 27 feet for the east-southeast dipping, high-angle fractures; and 43 feet for the south-southeast dipping, high-angle fractures.\r\n\r\nThe median estimated apparent transmissivity of individual water-yielding fractures or fracture zones was 0.3 feet squared per day and ranged from 0.01 to 382 feet squared per day. Ninety-five percent of the water-yielding fractures or fracture zones had an estimated apparent transmissivity of 19.5 feet squared per day or less. \r\n\r\nThe orientation, spacing, and hydraulic properties of water-yielding fractures identified during this study can be used to help estimate recharge, flow, and discharge of ground water contaminants. High-angle fractures provide vertical pathways for ground water to enter the bedrock, interconnections between low-angle fractures, and, subsequently, pathways for water flow within the bedrock along fracture planes. Low-angle fractures may allow horizontal ground-water flow in all directions. The orientation of fracturing and the hydraulic properties of each fracture set strongly affect changes in ground-water flow under stress (pumping) conditions.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri994050","usgsCitation":"Hansen, B.P., Stone, J., and Lane, J.W., 1999, Characteristics of fractures in crystalline bedrock determined by surface and borehole geophysical surveys, eastern surplus superfund site, Meddybemps, Maine: U.S. Geological Survey Water-Resources Investigations Report 99-4050, iv, 27 p., https://doi.org/10.3133/wri994050.","productDescription":"iv, 27 p.","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"links":[{"id":158826,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":2154,"rank":100,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/wrir99-4050/pdf/wrir99-4050.pdf","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Maine","city":"Meddybemps","geographicExtents":"{\n  \"type\": \"FeatureCollection\",\n  \"features\": [\n    {\n      \"type\": \"Feature\",\n      \"properties\": {},\n      \"geometry\": {\n        \"type\": \"Polygon\",\n        \"coordinates\": [\n          [\n            [\n              -67.36151218414307,\n              45.03607949268277\n            ],\n            [\n              -67.35473155975342,\n              45.03607949268277\n            ],\n            [\n              -67.35473155975342,\n              45.0420232007112\n            ],\n            [\n              -67.36151218414307,\n              45.0420232007112\n            ],\n            [\n              -67.36151218414307,\n              45.03607949268277\n            ]\n          ]\n        ]\n      }\n    }\n  ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49d6e4b07f02db5de46b","contributors":{"authors":[{"text":"Hansen, Bruce P.","contributorId":90727,"corporation":false,"usgs":true,"family":"Hansen","given":"Bruce","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":198246,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Stone, Janet Radway","contributorId":72793,"corporation":false,"usgs":true,"family":"Stone","given":"Janet Radway","affiliations":[],"preferred":false,"id":198245,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lane, John W. Jr. jwlane@usgs.gov","contributorId":1738,"corporation":false,"usgs":true,"family":"Lane","given":"John","suffix":"Jr.","email":"jwlane@usgs.gov","middleInitial":"W.","affiliations":[{"id":486,"text":"OGW Branch of Geophysics","active":true,"usgs":true}],"preferred":false,"id":198244,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}}
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