This report describes the areal extent, thickness, and hydraulic properties of glacial deposits in a preglacial bedrock valley south of the city of Waukesha in southeastern Wisconsin. In the 40- square-mile study area, the preglacial bedrock valley underlies an area across which the Fox River flows. A previous regional study of the area indicated that extensive glacial sand and gravel deposits may exist in the preglacial bedrock valley. New test-hole, well-construction, and seismic data collected from 1986 through 1991 showed that the preglacial bedrock valley immediately south of the city of Waukesha is narrower and shallower than previously thought. However, these data indicate that thicknesses of saturated glacial deposits in excess of 250 feet exist in a 1- to 2-mile-wide part of the valley in the southern part of the study area. Test-hole logs indicate that clean sand and gravel deposits are present in a shallow part of the preglacial bedrock valley. Fifty to sixty feet of silty and clayey sand and gravel deposits appear to underlie varying thicknesses of relatively impermeable clay till in the center of the study area. Ground water flows from upland areas on the eastern and western sides of the Fox River and discharges to the Fox River and wetlands adjacent to the river.
\nResults of a 6.5-hour aquifer test indicate that the silty sand and gravel deposits have an average transmissivity of about 140 feet squared per day and an average storage coefficient of about 1.2x10\"3 at one location. The horizontal hydraulic conductivity of these deposits averages about 4 feet per day. Analysis of drawdown indicates that these deposits are part of a leaky confined-aquifer system and that some water is derived from storage in an overlying clay layer. The transmissivity value determined from this aquifer test and a lack of clean sand and gravel encountered in other test holes indicate that glacial deposits at these sites may not yield enough water for a large municipal water supply. Sand and gravel deposits, capable of development as a municipal supply, may be present in the southern part of the study area. However, additional test holes are needed to determine whether adequate sand and gravel deposits underlie this area.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri924077","collaboration":"Prepared in cooperation with the Waukesha Water Utility","usgsCitation":"Batten, W.G., and Conlon, T., 1993, Hydrogeology of glacial deposits in a preglacial bedrock valley, Waukesha County, Wisconsin: U.S. Geological Survey Water-Resources Investigations Report 92-4077, iv, 15 p., https://doi.org/10.3133/wri924077.","productDescription":"iv, 15 p.","numberOfPages":"19","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":121942,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1992/4077/report-thumb.jpg"},{"id":54904,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1992/4077/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Wisconsin","county":"Waukesha County","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-88.5401,43.1978],[-88.4183,43.1964],[-88.3027,43.1954],[-88.1827,43.1948],[-88.0639,43.194],[-88.0664,43.1076],[-88.0682,43.0202],[-88.0692,42.9725],[-88.0675,42.9334],[-88.0699,42.8447],[-88.1868,42.8451],[-88.3044,42.8444],[-88.5413,42.8445],[-88.5413,42.9341],[-88.5407,43.0232],[-88.5407,43.111],[-88.5401,43.1978]]]},\"properties\":{\"name\":\"Waukesha\",\"state\":\"WI\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a49e4b07f02db62460a","contributors":{"authors":[{"text":"Batten, W. G.","contributorId":89504,"corporation":false,"usgs":true,"family":"Batten","given":"W.","email":"","middleInitial":"G.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":195820,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Conlon, T.D. 0000-0002-5899-7187","orcid":"https://orcid.org/0000-0002-5899-7187","contributorId":97947,"corporation":false,"usgs":true,"family":"Conlon","given":"T.D.","affiliations":[],"preferred":false,"id":195821,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":2319,"text":"wsp2386 - 1993 - Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85","interactions":[{"subject":{"id":20141,"text":"ofr89271 - 1991 - Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85","indexId":"ofr89271","publicationYear":"1991","noYear":false,"title":"Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85"},"predicate":"SUPERSEDED_BY","object":{"id":2319,"text":"wsp2386 - 1993 - Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85","indexId":"wsp2386","publicationYear":"1993","noYear":false,"title":"Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85"},"id":1}],"lastModifiedDate":"2012-02-02T00:05:19","indexId":"wsp2386","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":341,"text":"Water Supply Paper","code":"WSP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2386","title":"Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85","docAbstract":"The movement of water and tritium through the unsaturated zone was studied at a low-level radioactive-waste disposal site near Sheffield, Bureau County, Illinois, from 1981 to 1985. Water and tritium movement occurred in an annual, seasonally timed cycle; recharge to the saturated zone generally occurred in the spring and early summer. Mean annual precipitation (1982-85) was 871 mm (millimeters); mean annual recharge to the disposal trenches (July 1982 through June 1984) was estimated to be 107 mm. Average annual tritium flux below the study trenches was estimated to be 3.4 mCi/yr (millicuries per year). Site geology, climate, and waste-disposal practices influenced the spatial and temporal variability of water and tritium movement. Of the components of the water budget, evapotranspiration contributed most to the temporal variability of water and tritium movement. \r\n\r\nDisposal trenches are constructed in complexly layered glacial and postglacial deposits that average 17 m (meters) in thickness and overlie a thick sequence of Pennsylvanian shale. The horizontal saturated hydraulic conductivity of the clayey-silt to sand-sized glacial and postglacial deposits ranges from 4.8x10 -1 to 3.4x10 4 mm/d (millimeters per day). \r\n\r\nA 120-m-long horizontal tunnel provided access for hydrologic measurements and collection of sediment and water samples from the unsaturated and saturated geologic deposits below four disposal trenches. Trench-cover and subtrench deposits were monitored with soil-moisture tensiometers, vacuum and gravity lysimeters, piezometers, and a nuclear soil-moisture gage. A cross-sectional, numerical ground-water-flow model was used to simulate water movement in the variably saturated geologic deposits in the tunnel area. Concurrent studies at the site provided water-budget data for estimating recharge to the disposal trenches. \r\n\r\nVertical water movement directly above the trenches was impeded by a zone of compaction within the clayey-silt trench covers. Water entered the trenches primarily at the trench edges where the compacted zone was absent and the cover was relatively thin. Collapse holes in the trench covers that resulted from inadequate compaction of wastes within the trenches provided additional preferential pathways for surface-water drainage into the trenches; drainage into one collapse hole during a rainstorm was estimated to be 1,700 L (liters). Till deposits near trench bases induced lateral water and tritium movement. Limited temporal variation in water movement and small flow gradients (relative to the till deposits) were detected in the unsaturated subtrench sand deposit; maximum gradients during the spring recharge period averaged 1.62 mm/mm (millimeter per millimeter). Time-of-travel of water moving from the trench covers to below the trenches was estimated to be as rapid as 41 days (assuming individual water molecules move this distance in one recharge cycle). \r\n\r\nTritium concentrations in water from the unsaturated zone ranged from 200 (background) to 10,000,000 pCi/L (picocuries per liter). Tritium concentrations generally were higher below trench bases (averaging 91,000 pCi/L) than below intertrench sediments (averaging 3,300 pCi/L), and in the subtrench Toulon Member of the Glasford Formation (sand) (averaging 110,000 pCi/L) than in the Hulick Till Member of the Glasford Formation (clayey silt) (averaging 59,000 pCi/L). Average subtrench tritium concentration increased from 28,000 to 100,000 pCi/L during the study period. Within the trench covers, there was a strong seasonal trend in tritium concentrations; the highest concentrations occurred in late summer when soil-moisture contents were at a minimum. Subtrench tritium movement occurred in association with the annual cycle of water movement, as well as independently of the cycle, in apparent response to continuous water movement through the subtrench sand deposits and to the deterioration of trench-waste containers. \r\n\r\nThe increase in concen","language":"ENGLISH","publisher":"U.S. G.P.O. ;\r\nU.S. Geological Survey, Book and Open-File Report Sales [distributor],","doi":"10.3133/wsp2386","usgsCitation":"Mills, P., and Healy, R.W., 1993, Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85: U.S. Geological Survey Water Supply Paper 2386, vi, 72 p. :ill., maps ;28 cm., https://doi.org/10.3133/wsp2386.","productDescription":"vi, 72 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":137562,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wsp/2386/report-thumb.jpg"},{"id":28159,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wsp/2386/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a09e4b07f02db5fa705","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":145008,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Healy, Richard W. 0000-0002-0224-1858 rwhealy@usgs.gov","orcid":"https://orcid.org/0000-0002-0224-1858","contributorId":658,"corporation":false,"usgs":true,"family":"Healy","given":"Richard","email":"rwhealy@usgs.gov","middleInitial":"W.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":145007,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":20140,"text":"ofr93402 - 1993 - Vertical distribution of hydraulic characteristics and water quality in three boreholes in the Galena-Platteville Aquifer at the Parson's Casket Hardware Superfund site, Belvidere, Illinois, 1990","interactions":[],"lastModifiedDate":"2012-02-02T00:07:43","indexId":"ofr93402","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"93-402","title":"Vertical distribution of hydraulic characteristics and water quality in three boreholes in the Galena-Platteville Aquifer at the Parson's Casket Hardware Superfund site, Belvidere, Illinois, 1990","docAbstract":"The U.S. Geological Survey investigated contaminant migration in the Galena-Platteville aquifer at the Parson's Casket Hardware site in Belvidere, Ill. This report presents the results of the first phase of the investigation, from August through December 1990.\r\nA packer assembly was used to isolate various depth intervals in three 150-foot-deep boreholes in the dolomite aquifer. Aquifer-test data include vertical distributions of vertical hydraulic gradient, horizontal hydraulic conductivity (K), and response of water levels in observation wells to borehole pumping. Water-quality data include vertical distributions of field-measured properties and laboratory determinations of concentrations of volatile organic compounds (VOC's).\r\n\r\nvertical hydraulic gradients in the aquifer were downward. The downward gradients ranged from less than 0.01 to 0.37 foot/foot. The largest gradient was associated with an elevated-K interval at 115 to 125 feet below land surface.\r\n\r\nThe hydraulic characteristics of strata within the aquifer seem to be generally consistent across the site. The strata can be subdivided into five hydraulic units with the following approximate depth ranges-and K's : (1) a 1- to 5-foot-thick weathered surface at about 35 feet below land surface, 1-200 ft/d (feet per day); (2) 35-80 feet, 0.05-0.5 ft/d; (3) 80-115 feet, 0.5 ft/d; (4) 115-125 feet, 0.5-10 ft/d; and (5) 125-150 feet, 0.5 ft/d.\r\n\r\nWater-level drawdowns were detected in one shallow bedrock observation well during pumping of some of the packed intervals in a nearby borehole, indicating that the degree of vertical connection between some intervals in the aquifer may be greater than that between others. During development pumping of one borehole, drawdowns were detected in a nearby well screened in the lower part of the overlying glacial-drift deposits, indicating hydraulic connection between the glacial drift aquifer and the bedrock aquifer.\r\n\r\nVOC's were detected throughout the upper half (about 150 feet ) of the bedrock aquifer beneath the site. The detected compounds were predominantly chlorinated ethenes and ethanes (maximum concentration was 570 ppb (parts per billion) of trichloroethylene. There was a positive correlation between concentrations of VOC's, specific conductance, and K.\r\n\r\nThe distribution of VOC concentrations indicate that the low-K dolomite beds in the Galena-Platteville aquifer may impede the downward migration of the VOC's and that the high-K beds and fissures may provide pathways for the lateral migration of VOC's through the aquifer. Contaminant migration is possibly affected by ground-water flow through vertical fractures that connect shallow beds with deeper beds in the aquifer, thus explaining the detections of some VOC species at intermittent depths.","language":"ENGLISH","publisher":"U.S. Geological Survey ;\r\nU.S. Geological Survey, Earth Science Information Center, Open-File Reports Section [distributor],","doi":"10.3133/ofr93402","usgsCitation":"Mills, P., 1993, Vertical distribution of hydraulic characteristics and water quality in three boreholes in the Galena-Platteville Aquifer at the Parson's Casket Hardware Superfund site, Belvidere, Illinois, 1990: U.S. Geological Survey Open-File Report 93-402, iv, 36 p. :ill., maps ;28 cm., https://doi.org/10.3133/ofr93402.","productDescription":"iv, 36 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":153035,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1993/0402/report-thumb.jpg"},{"id":49682,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1993/0402/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a13e4b07f02db6020ae","contributors":{"authors":[{"text":"Mills, P. C.","contributorId":69117,"corporation":false,"usgs":true,"family":"Mills","given":"P. C.","affiliations":[],"preferred":false,"id":182132,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":28362,"text":"wri914136 - 1993 - Hydrology and water quality of the Forest County Potawatomi Indian Reservation, Wisconsin","interactions":[],"lastModifiedDate":"2015-10-26T13:58:58","indexId":"wri914136","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","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":"91-4136","title":"Hydrology and water quality of the Forest County Potawatomi Indian Reservation, Wisconsin","docAbstract":"This report presents data from a study by the U.S. Geological Survey, in cooperation with the Forest County Potawatomi Community of Wisconsin, to document the hydrology and water quality of the Potawatomi Indian Reservation in southern Forest County. Data were collected from October 1981 through September 1987.
\nGlacial sand and gravel forms the primary aquifer on the reservation. This aquifer is unconfined, and its saturated thickness ranges from approximately 200 feet to zero feet in areas where the bedrock crops out. Horizontal hydraulic conductivity of the glacial deposits is estimated to range from 0.4 to 48 feet per day.
\nThree watersheds encompass the Reservation: The Wolf, the North Branch Oconto, and the Peshtigo. Estimates of base-flow discharge that will occur on the average once every 2 years for a 7- day period for Reservation streams range from 7.5 ft3/s (cubic feet per second) for North Branch Oconto at Wabeno to 32 ft3/s for the Rat River near Wabeno.
\nGround water in the study area is a calcium magnesium bicarbonate type and is suitable for most uses. The ground water sampled during the study was slightly alkaline and moderately hard to very hard; median hardness was 135 mg/L (milligrams per liter) as calcium carbonate. Alkalinity of ground water ranged from 79 to 318 mg/L; median alkalinity was 123 mg/L as calcium carbonate.
\nWith the exception of nitrate in water from one well sampled, constituent concentrations were less than the U.S. Environmental Protection Agency's Maximum Contaminant Levels (MCL's) for drinking water. Nitrate plus nitrite concentration was 15 mg/L as N, or 50 percent greater than the MCL, in one well located one-half mile northeast of Lake Lucerne.
\nSecondary Maximum Contaminant Levels (SMCL's) for iron were exceeded in water from two wells. In one of these two well waters, the manganese concentration equaled the SMCL.
\nStreams on the Reservation also contain a calcium magnesium bicarbonate type water. The stream waters are slightly alkaline and are considered soft to moderately hard; median hardness in stream samples was 56 mg/L as calcium carbonate. The alkalinity in stream samples ranged from 46 to 59 mg/L as calcium carbonate; the median value was 51 mg/L. Stream water is intermediate between hard, alkaline ground water and soft, acidic precipitation and surface runoff. Low but detectable concentrations of chromium, copper, iron, magnesium, mercury, and zinc were detected in most bottom-material samples.
\nWater quality of three lakes on the Reservation is variable and depends on the degree of connection with the ground-water system. In general, Bug Lake and Devils Lake are in poor hydraulic connection with the ground-water system, and their waters contain low concentrations of dissolved solids and alkalinity and low pH. King Lake is in good hydraulic connection with the ground-water system, and its waters contain higher concentrations of dissolved solids and alkalinity and higher pH than Bug and Devils Lakes.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri914136","collaboration":"Prepared in cooperation with the Forest County Potawatomi Community of Wisconsin","usgsCitation":"Lidwin, R., and Krohelski, J.T., 1993, Hydrology and water quality of the Forest County Potawatomi Indian Reservation, Wisconsin: U.S. Geological Survey Water-Resources Investigations Report 91-4136, Report: v, 24 p.; 4 Plates: 25.06 x 21.81 inches or smaller, https://doi.org/10.3133/wri914136.","productDescription":"Report: v, 24 p.; 4 Plates: 25.06 x 21.81 inches or smaller","numberOfPages":"29","onlineOnly":"N","additionalOnlineFiles":"Y","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":57167,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1991/4136/plate-3.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57168,"rank":403,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1991/4136/plate-4.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57169,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1991/4136/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57165,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1991/4136/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57166,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1991/4136/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":120153,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1991/4136/report-thumb.jpg"}],"country":"United States","state":"Wisconsin","county":"Forest County","otherGeospatial":"Potowatomi Indian Reservation","geographicExtents":"{\"type\":\"FeatureCollection\",\"features\":[{\"type\":\"Feature\",\"geometry\":{\"type\":\"Polygon\",\"coordinates\":[[[-88.6833,46.0144],[-88.6844,45.9823],[-88.6746,45.9823],[-88.6757,45.8958],[-88.6761,45.8093],[-88.6758,45.7247],[-88.5519,45.723],[-88.4665,45.7224],[-88.4254,45.7225],[-88.4255,45.6356],[-88.4262,45.5492],[-88.4263,45.5071],[-88.4258,45.4925],[-88.4261,45.4774],[-88.4257,45.4633],[-88.4259,45.4505],[-88.4261,45.4358],[-88.4263,45.4212],[-88.4272,45.4066],[-88.4283,45.3769],[-88.5542,45.3778],[-88.6418,45.3784],[-88.6587,45.3785],[-88.6781,45.3787],[-88.7196,45.3784],[-88.754,45.3782],[-88.802,45.3775],[-88.9259,45.3799],[-88.9265,45.3909],[-88.9251,45.4014],[-88.9233,45.4659],[-89.0467,45.4668],[-89.0468,45.5518],[-89.0475,45.6391],[-89.0469,45.7265],[-89.047,45.8097],[-89.0477,45.8953],[-89.0478,45.9822],[-88.9332,45.9822],[-88.9329,46.0746],[-88.8507,46.0409],[-88.8473,46.0368],[-88.8431,46.0336],[-88.8426,46.0333],[-88.8371,46.0312],[-88.8325,46.0294],[-88.828,46.0294],[-88.8248,46.0294],[-88.8207,46.0289],[-88.819,46.0284],[-88.8169,46.0278],[-88.8143,46.026],[-88.8123,46.0247],[-88.8103,46.0238],[-88.8083,46.0238],[-88.8077,46.0238],[-88.8051,46.0238],[-88.8031,46.0252],[-88.803,46.0275],[-88.8024,46.0302],[-88.8017,46.032],[-88.7991,46.0338],[-88.7974,46.0344],[-88.7968,46.0346],[-88.7948,46.0341],[-88.7928,46.0332],[-88.7914,46.0318],[-88.7895,46.0324],[-88.7873,46.0334],[-88.786,46.0336],[-88.7843,46.0329],[-88.7828,46.0311],[-88.7828,46.0292],[-88.7841,46.0274],[-88.7847,46.026],[-88.7866,46.0232],[-88.7865,46.0209],[-88.7856,46.0196],[-88.7848,46.0186],[-88.7824,46.0178],[-88.7798,46.0178],[-88.7777,46.0179],[-88.7758,46.0181],[-88.7753,46.0197],[-88.7747,46.0203],[-88.7734,46.0216],[-88.7715,46.024],[-88.7691,46.0239],[-88.7669,46.0226],[-88.7662,46.0208],[-88.7637,46.02],[-88.7632,46.02],[-88.7615,46.02],[-88.7565,46.0212],[-88.754,46.0226],[-88.7507,46.0248],[-88.7458,46.0267],[-88.7408,46.028],[-88.7363,46.028],[-88.7334,46.0277],[-88.7317,46.0273],[-88.7284,46.0256],[-88.7251,46.0239],[-88.7232,46.0219],[-88.7221,46.0209],[-88.7216,46.0202],[-88.7241,46.0183],[-88.7254,46.0165],[-88.7253,46.0146],[-88.724,46.0133],[-88.7214,46.0133],[-88.7168,46.0139],[-88.7144,46.015],[-88.7129,46.0157],[-88.7084,46.0167],[-88.7023,46.0177],[-88.6977,46.0177],[-88.6953,46.0173],[-88.6913,46.0166],[-88.6846,46.0149],[-88.6833,46.0144]]]},\"properties\":{\"name\":\"Forest\",\"state\":\"WI\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a18e4b07f02db604cb6","contributors":{"authors":[{"text":"Lidwin, R.A.","contributorId":33349,"corporation":false,"usgs":true,"family":"Lidwin","given":"R.A.","email":"","affiliations":[],"preferred":false,"id":199667,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Krohelski, J. T.","contributorId":59046,"corporation":false,"usgs":true,"family":"Krohelski","given":"J.","email":"","middleInitial":"T.","affiliations":[{"id":595,"text":"U.S. Geological Survey","active":false,"usgs":true}],"preferred":false,"id":199668,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":4917,"text":"twri06A3 - 1993 - A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems, Part 1: Model Description and User's Manual","interactions":[{"subject":{"id":21165,"text":"ofr90194 - 1992 - A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems; Part 1, Model description and user's manual","indexId":"ofr90194","publicationYear":"1992","noYear":false,"title":"A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems; Part 1, Model description and user's manual"},"predicate":"SUPERSEDED_BY","object":{"id":4917,"text":"twri06A3 - 1993 - A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems, Part 1: Model Description and User's Manual","indexId":"twri06A3","publicationYear":"1993","noYear":false,"title":"A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems, Part 1: Model Description and User's Manual"},"id":1}],"lastModifiedDate":"2012-02-02T00:05:43","indexId":"twri06A3","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":336,"text":"Techniques of Water-Resources Investigations","code":"TWRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"06-A3","title":"A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems, Part 1: Model Description and User's Manual","docAbstract":"A MODular, Finite-Element digital-computer program (MODFE) was developed to simulate steady or unsteady-state, two-dimensional or axisymmetric ground-water flow. Geometric- and hydrologic-aquifer characteristics in two spatial dimensions are represented by triangular finite elements and linear basis functions; one-dimensional finite elements and linear basis functions represent time. Finite-element matrix equations are solved by the direct symmetric-Doolittle method or the iterative modified, incomplete-Cholesky, conjugate-gradient method. Physical processes that can be represented by the model include (1) confined flow, unconfined flow (using the Dupuit approximation), or a combination of both; (2) leakage through either rigid or elastic confining beds; (3) specified recharge or discharge at points, along lines, and over areas; (4) flow across specified-flow, specified-head, or bead-dependent boundaries; (5) decrease of aquifer thickness to zero under extreme water-table decline and increase of aquifer thickness from zero as the water table rises; and (6) head-dependent fluxes from springs, drainage wells, leakage across riverbeds or confining beds combined with aquifer dewatering, and evapotranspiration.\r\nThe report describes procedures for applying MODFE to ground-water-flow problems, simulation capabilities, and data preparation. Guidelines for designing the finite-element mesh and for node numbering and determining band widths are given. Tables are given that reference simulation capabilities to specific versions of MODFE. Examples of data input and model output for different versions of MODFE are provided.","language":"ENGLISH","doi":"10.3133/twri06A3","usgsCitation":"Torak, L., 1993, A modular finite-element model (MODFE) for areal and axisymmetric ground-water-flow problems, Part 1: Model Description and User's Manual: U.S. Geological Survey Techniques of Water-Resources Investigations 06-A3, USGS-TWRI book 6, chap. A3. 136 p., https://doi.org/10.3133/twri06A3.","productDescription":"USGS-TWRI book 6, chap. A3. 136 p.","costCenters":[],"links":[{"id":139604,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":686,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/twri/twri6a3/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b23e4b07f02db6adeb2","contributors":{"authors":[{"text":"Torak, L.J.","contributorId":87533,"corporation":false,"usgs":true,"family":"Torak","given":"L.J.","affiliations":[],"preferred":false,"id":150112,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":19116,"text":"ofr93439 - 1993 - Selected data on water quantity and quality at four sites on streams draining public lands, Colorado River basin, southeastern Nevada, October 1988 - September 1991","interactions":[],"lastModifiedDate":"2012-02-02T00:07:25","indexId":"ofr93439","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"93-439","title":"Selected data on water quantity and quality at four sites on streams draining public lands, Colorado River basin, southeastern Nevada, October 1988 - September 1991","docAbstract":"The Nevada part of the Colorado River basin encompasses about 12,000 sq mi, of which 70 percent is public land. Water-quality monitoring stations existing before 1988 were at or near the mouths of tributaries flowing into Lake Mead on the Colorado River below multiple sources of dissolved solids. Thus, data were insufficient to assess what percentage of the overall dissolved-solids contribution to the Colorado River comes from public lands. To assess that contribution in southeastern Nevada, four streamflow and water-quality stations were established, one each on Pahranagat Wash, Muddy River, Meadow Valley Wash, and Las Vegas Wash. Streamflow data and specific-conductance data (an indirect, approximate measure of dissolved-solids concentration) were recorded half-hourly at Pahranagat Wash and Las Vegas Wash, and hourly at Muddy River and Meadow Valley Wash. In addition, water samples were collected during station visits and analyzed for instantaneous specific conductance and dissolved-solids concentration. Additional water samples were collected during selected periods of storm runoff. Data collected at the four sites from October 1988 through September 1991 are presented in tabular format in this report. These data provide information for characterizing the dissolved-solids contribution from public lands in southeastern Nevada to the Colorado River.","language":"ENGLISH","publisher":"U.S. Geological Survey ;\r\nU.S. Geological Survey, Earth Science Information Center, Open-File Reports Services [distributer],","doi":"10.3133/ofr93439","usgsCitation":"Gortsema, G., 1993, Selected data on water quantity and quality at four sites on streams draining public lands, Colorado River basin, southeastern Nevada, October 1988 - September 1991: U.S. Geological Survey Open-File Report 93-439, iv, 31 p. :map ;28 cm., https://doi.org/10.3133/ofr93439.","productDescription":"iv, 31 p. :map ;28 cm.","costCenters":[],"links":[{"id":150697,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1993/0439/report-thumb.jpg"},{"id":48579,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1993/0439/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e3e4b07f02db5e5740","contributors":{"authors":[{"text":"Gortsema, G.C.","contributorId":17631,"corporation":false,"usgs":true,"family":"Gortsema","given":"G.C.","affiliations":[],"preferred":false,"id":180332,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":54425,"text":"wdrCA924 - 1993 - Water Resources Data, California, Water Year 1992. Volume 4. Northern Central Valley Basins and the Great Basin from Honey Lake Basin to Oregon State Line","interactions":[],"lastModifiedDate":"2012-09-01T01:01:51","indexId":"wdrCA924","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":340,"text":"Water Data Report","code":"WDR","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"CA-92-4","title":"Water Resources Data, California, Water Year 1992. Volume 4. Northern Central Valley Basins and the Great Basin from Honey Lake Basin to Oregon State Line","docAbstract":"Water resources data for the 1992 water year for California consist of records of stage, discharge, and water quality of streams; stage and contents in lakes and reservoirs; and water levels and water quality in wells. Volume 4 contains discharge records for 190 gaging stations; stage and contents for 44 lakes and reservoirs; precipitation data for 3 stations; and water quality for 10 stations. Also included are two low-flow partialrecord stations. These data represent that part of the National Water Data System operated by the U.S. Geological Survey and cooperating State and Federal agencies in California.","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Sacramento, CA","doi":"10.3133/wdrCA924","collaboration":"Prepared in cooperation with the California Department of Water Resources and with other agencies.","usgsCitation":"Anderson, S., Mullen, J., Friebel, M., and Markham, K., 1993, Water Resources Data, California, Water Year 1992. Volume 4. Northern Central Valley Basins and the Great Basin from Honey Lake Basin to Oregon State Line (Legacy Report): U.S. Geological Survey Water Data Report CA-92-4, xviii, 439 p., https://doi.org/10.3133/wdrCA924.","productDescription":"xviii, 439 p.","numberOfPages":"468","costCenters":[{"id":631,"text":"Water Resources Division-California District","active":false,"usgs":true}],"links":[{"id":174276,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/wdr_CA_92_4.jpg"},{"id":260101,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wdr/1992/ca-92/WDR-1992-vol4.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"California","otherGeospatial":"Great Basin;Honey Lake Basin;Northern Central Valley Basins","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -123,38 ], [ -123,42 ], [ -120,42 ], [ -120,38 ], [ -123,38 ] ] ] } } ] }","edition":"Legacy Report","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0be4b07f02db5fc1ca","contributors":{"authors":[{"text":"Anderson, S.W.","contributorId":25628,"corporation":false,"usgs":true,"family":"Anderson","given":"S.W.","email":"","affiliations":[],"preferred":false,"id":250325,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mullen, J.R.","contributorId":92683,"corporation":false,"usgs":true,"family":"Mullen","given":"J.R.","email":"","affiliations":[],"preferred":false,"id":250326,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Friebel, M.F.","contributorId":23207,"corporation":false,"usgs":true,"family":"Friebel","given":"M.F.","email":"","affiliations":[],"preferred":false,"id":250324,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Markham, K.L.","contributorId":14041,"corporation":false,"usgs":true,"family":"Markham","given":"K.L.","email":"","affiliations":[],"preferred":false,"id":250323,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":28979,"text":"wri934037 - 1993 - Reconnaissance investigation of the geology and hydrogeology of Lackland Air Force Base, San Antonio, Texas","interactions":[],"lastModifiedDate":"2022-09-06T21:45:52.687745","indexId":"wri934037","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","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":"93-4037","title":"Reconnaissance investigation of the geology and hydrogeology of Lackland Air Force Base, San Antonio, Texas","docAbstract":"An investigation at Lackland Air Force Base and Lackland Air Force Base Training Annex (Medina Base) was conducted from May to September 1988 to delineate the subsurface geology, to describe the hydrogeology within the study area, and to determine possible migration pathways for contaminants. Data from this investigation supplement data collected in conjunction with other Air Training Command studies conducted under the Installation Restoration Program.
\nThe geologic formations in the vicinity of Lackland Air Force Base and Medina Base consist of sedimentary rocks of Cretaceous, Tertiary, and Quaternary age. The lithology of these formations consists primarily of limestone and marl, with lesser amounts of gravel, sand, silt, shale, and clay. The formations that comprise the geologic setting at Lackland Air Force Base and Medina Base include the Navarro Group of Late Cretaceous age, the Midway Group and Uvalde Gravel of Tertiary age, and the Leona Formation and fluviatile terrace deposits of Quaternary age.
\nThe age of the faulting within the study area has not been determined accurately, but the faulting might have occurred during intervals from Early Cretaceous to Holocene time. During these tectonic episodes, uplift of the Edwards Plateau might have occurred. This uplift could have enhanced erosion of the Cretaceous age Edwards Group, which is north of the study area, causing deposition of alluvial deposits south of this tectonic activity. The Leona Formation is composed of limestone gravel deposits forming terraces in the valleys of present streams. In general, these terraces are topographically lower than those formed by the Uvalde Gravel. In contrast, the fluviatile terrace deposits are above flood level along entrenched streams such as Leon and Medio Creeks. The Leona Formation is generally above the level of these fluviatile terrace deposits.
\nA review of the hydrogeologic literature indicated that the Navarro and Midway Groups do not yield water to wells in Bexar County. However, recent studies by the U.S. Geological Survey at Kelly Air Force Base indicate that the uppermost beds of the Navarro Group can be saturated but yield little or no water to wells. Each stream terrace deposit of the Leona Formation and the fluviatile terrace deposits are separate water-bearing units. At Lackland Air Force Base, shallow ground water is present in the Leona Formation and the flow probably is toward Leon Creek. At Medina Base, the fluviatile terrace deposits are present along both banks of Medio Creek and probably are separate water-bearing units. Furthermore, ground-water flow in each of these units probably is toward Medio Creek. The Uvalde Gravel, present only at and west of Medina Base, is not a source of shallow ground water. However, during periods of precipitation, the formation can readily absorb precipitation and surface runoff. Water drains quickly through the formation because of its topographically high position and substantial hydraulic conductivity.
\nMajor pathways of potential contaminant migration off the bases include the local streams of Medio and Leon Creeks, and to a lesser extent, the shallow ground water beneath the bases. Although the Uvalde Gravel is not a source of shallow ground water at Medina Base, it drains water quickly, and wastes that might be buried in the gravel could be a potential source of contamination during brief ground-water recharge periods resulting from major precipitation.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Austin, TX","doi":"10.3133/wri934037","collaboration":"Prepared in cooperation with the U.S. Air Force, Air Training Command, Randolph Air Force Base, Texas","usgsCitation":"Ozuna, G., and Small, T.A., 1993, Reconnaissance investigation of the geology and hydrogeology of Lackland Air Force Base, San Antonio, Texas: U.S. Geological Survey Water-Resources Investigations Report 93-4037, iv, 20 p., https://doi.org/10.3133/wri934037.","productDescription":"iv, 20 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"links":[{"id":57851,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1993/4037/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":159140,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1993/4037/report-thumb.jpg"},{"id":406279,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_47765.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Texas","city":"San Antonio","otherGeospatial":"Lackland Air Force Base","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -98.72074127197264,\n 29.317236669362003\n ],\n [\n -98.72074127197264,\n 29.418965093407095\n ],\n [\n -98.5470199584961,\n 29.418965093407095\n ],\n [\n -98.5470199584961,\n 29.317236669362003\n ],\n [\n -98.72074127197264,\n 29.317236669362003\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e48eae4b07f02db554850","contributors":{"authors":[{"text":"Ozuna, G. B.","contributorId":25205,"corporation":false,"usgs":true,"family":"Ozuna","given":"G. B.","affiliations":[],"preferred":false,"id":200724,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Small, T. A.","contributorId":105731,"corporation":false,"usgs":true,"family":"Small","given":"T.","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":200725,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":29181,"text":"wri934051 - 1993 - Hydrology of two tidal marshes in North Carolina where open-marsh water management modifications have been implemented","interactions":[],"lastModifiedDate":"2025-01-13T19:36:46.962678","indexId":"wri934051","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","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":"93-4051","title":"Hydrology of two tidal marshes in North Carolina where open-marsh water management modifications have been implemented","docAbstract":"In 1988 and 1989, open-marsh water management modifications were implemented at tidal marshes near West Onslow Beach and Hobucken, North Carolina, as part of a pilot program to evaluate the effectiveness of ditching techniques as a mosquito-control method in open marshes. In 1984, before implementation of the modifications, a study was initiated to allow definition of the effects of those modifications on the hydrology of the marshes. Water levels in canals near the West Onslow Beach study marsh are controlled by periodic, gravitational tides. Daily maximum tides exceeded the elevation of the upper marsh surface 30% of the time before and 18% of the time after open-marsh water management. Daily maximum tides at this marsh exceeded the upper marsh surface 34% of the time before and 24% of the time after open-marsh water management. Variation in tidal conditions resulted in varying numbers and duration of floods at the study marshes. Duration analyses indicated relations between tide levels and marsh surface-water levels were unchanged after modifications. Groundwater movement through the marshes varies seasonally and is primarily vertical. Withdrawals are by evapotranspiration and recharge is by infiltration. During nongrowing months saturated conditions prevail. Groundwater flow to the marsh interior from the surrounding tidal canals was not detected during these declines. Changes in the natural variation in withdrawals from and recharge to groundwater were not indicated by the data collected during this study. Water levels in canals adjacent to the Hobucken study marsh are primarily controlled by wind-driven tides.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri934051","usgsCitation":"Pope, B., 1993, Hydrology of two tidal marshes in North Carolina where open-marsh water management modifications have been implemented: U.S. Geological Survey Water-Resources Investigations Report 93-4051, v, 41 p., https://doi.org/10.3133/wri934051.","productDescription":"v, 41 p.","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":124776,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1993/4051/report-thumb.jpg"},{"id":58050,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1993/4051/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":466141,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_47776.htm","text":"Hobucken marsh","linkFileType":{"id":5,"text":"html"}},{"id":466142,"rank":4,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_47777.htm","text":"Onslow Beach marsh","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"North Carolina","city":"Hobucken","otherGeospatial":"West Onslow Beach","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -76.54615625888958,\n 35.2444\n ],\n [\n -76.54615625888958,\n 35.233\n ],\n [\n -76.52548712233958,\n 35.233\n ],\n [\n -76.52548712233958,\n 35.2444\n ],\n [\n -76.54615625888958,\n 35.2444\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -77.5333,\n 34.4542\n ],\n [\n -77.5333,\n 34.4417\n ],\n [\n -77.5167,\n 34.4417\n ],\n [\n -77.5167,\n 34.4542\n ],\n [\n -77.5333,\n 34.4542\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e478fe4b07f02db48a38e","contributors":{"authors":[{"text":"Pope, B.F.","contributorId":10062,"corporation":false,"usgs":true,"family":"Pope","given":"B.F.","email":"","affiliations":[],"preferred":false,"id":201096,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":19938,"text":"ofr93129 - 1993 - Water-resources investigations in Wisconsin, 1993","interactions":[],"lastModifiedDate":"2015-10-19T09:45:16","indexId":"ofr93129","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"93-129","title":"Water-resources investigations in Wisconsin, 1993","docAbstract":"PROBLEM: Surface-water information is needed for surveillance, planning, design, hazard warning, operation, and management in water-related fields such as water supply, hydroelectric power, flood control, irrigation, bridge and culvert design, wildlife management, pollution abatement, flood-plain management, and water-resources development. An appropriate data base is necessary to provide this information.
\nOBJECTIVE: The objectives of this study are to provide continuous discharge records for selected rivers at specific sites to supply the needs for: regulation, analytical studies, definition of statistical properties, trends analysis, determination of the occurrence, and distribution of water in streams for planning. The project is also designed to determine lake levels and to provide discharge for floods, low-flow conditions, and for water-quality investigations. Requests for streamflow data and information relating to streamflow in Wisconsin are answered. Basic data are published annually in \"Water Resources Data Wisconsin.\"
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr93129","usgsCitation":"Maertz, D., 1993, Water-resources investigations in Wisconsin, 1993: U.S. Geological Survey Open-File Report 93-129, xi, 83 p., https://doi.org/10.3133/ofr93129.","productDescription":"xi, 83 p.","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":152387,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1993/0129/report-thumb.jpg"},{"id":49445,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1993/0129/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United 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\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e49e2e4b07f02db5e4eb8","contributors":{"authors":[{"text":"Maertz, D. E.","contributorId":55030,"corporation":false,"usgs":true,"family":"Maertz","given":"D. E.","affiliations":[],"preferred":false,"id":181765,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":29037,"text":"wri934005 - 1993 - Geohydrology and quality of shallow ground water at and near the Old Laurel County and G.C. Singleton landfills, Laurel County, Kentucky","interactions":[],"lastModifiedDate":"2022-01-11T21:32:43.975878","indexId":"wri934005","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","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":"93-4005","title":"Geohydrology and quality of shallow ground water at and near the Old Laurel County and G.C. Singleton landfills, Laurel County, Kentucky","docAbstract":"Between 1969 and 1983, solid and hazardous waste was deposited at the Old Laurel County and G.C. Singleton Landfills that were developed on a bench created by strip mining for coal. Water-level data from eight monitoring wells indicate that the general direction of groundwater flow in the shallow aquifer is toward Slate Lick, which is at a lower altitude than the landfills. Analyses of water samples from these wells indicate that the water quality near the landfills is similar to that expected in coal strip-mined areas. The pH of groundwater ranged from 4.6 to 6.2 and indicates acidic conditions. Elevated values of specific conductance in groundwater near the landfills may indicate the effects of landfill leachate or acid-mine drainage. The groundwater samples also contained high concentrations of dissolved constituents commonly associated with acid-mine drainage such as aluminum, iron, manganese, sulfate, and zinc. A relatively high concentration of fluoride, 4.5 mg/L, in water from one well may be related to landfill leachate. Except for 3,4-dichloro-benzoic acid, organic constituents were not detected in the groundwater samples. However, because of the widespread use of chemicals containing 3,4-dichloro-benzoic acid, the source of this constituent in the shallow aquifer system near the landfills cannot be determined.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri934005","usgsCitation":"Parnell, J.M., 1993, Geohydrology and quality of shallow ground water at and near the Old Laurel County and G.C. Singleton landfills, Laurel County, Kentucky: U.S. Geological Survey Water-Resources Investigations Report 93-4005, v, 41 p., https://doi.org/10.3133/wri934005.","productDescription":"v, 41 p.","costCenters":[],"links":[{"id":394222,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_47743.htm"},{"id":57904,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1993/4005/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":122666,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1993/4005/report-thumb.jpg"}],"country":"United States","state":"Kentucky","county":"Laurel County","otherGeospatial":"Old Laurel County and G.C. Singleton landfills","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -84.05,\n 37.1728\n ],\n [\n -84.0722,\n 37.1728\n ],\n [\n -84.0722,\n 37.1917\n ],\n [\n -84.05,\n 37.1917\n ],\n [\n -84.05,\n 37.1728\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1be4b07f02db6a8c9b","contributors":{"authors":[{"text":"Parnell, J. M.","contributorId":13656,"corporation":false,"usgs":true,"family":"Parnell","given":"J.","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":200834,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":1802,"text":"wsp2388 - 1993 - Hydraulic characteristics of, and ground-water flow in, coal-bearing rocks of southwestern Virginia","interactions":[{"subject":{"id":19235,"text":"ofr91250 - 1991 - Hydraulic characteristics of, and ground-water flow in, coal-bearing rocks of southwestern Virginia","indexId":"ofr91250","publicationYear":"1991","noYear":false,"title":"Hydraulic characteristics of, and ground-water flow in, coal-bearing rocks of southwestern Virginia"},"predicate":"SUPERSEDED_BY","object":{"id":1802,"text":"wsp2388 - 1993 - Hydraulic characteristics of, and ground-water flow in, coal-bearing rocks of southwestern Virginia","indexId":"wsp2388","publicationYear":"1993","noYear":false,"title":"Hydraulic characteristics of, and ground-water flow in, coal-bearing rocks of southwestern Virginia"},"id":1}],"lastModifiedDate":"2021-12-21T21:51:13.027932","indexId":"wsp2388","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":341,"text":"Water Supply Paper","code":"WSP","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"2388","title":"Hydraulic characteristics of, and ground-water flow in, coal-bearing rocks of southwestern Virginia","docAbstract":"This report presents the results of a study by the U.S Geological Survey, in cooperation with the Virginia Department of Mines, Minerals, and Energy, Division of Mined Land Reclamation, and the Powell River Project, to describe the hydraulic characteristics of major water-bearing zones in the coal-bearing rocks of southwestern Virginia and to develop a conceptual model of the ground-water-flow system. Aquifer testing in1987 and 1988 of 9-ft intervals in coal-exploration coreholes indicates that transmissivity decreases with increasing depth. Most rock types are permeable to a depth of approximately 100 ft; however, only coal seams are consistently permeable (transmissivity greater than 0.001 ft/d) at depths greater than 200 ft . Constant-head injection testing of rock intervals adjacent to coal seams usually indicated lower values of transmissivity than those values obtained when coal seams were isolated within the test interval; thus, large values of horizontal hydraulic conductivity at depth are associated with coal seams.
Potentiometric-head measurements indicate that high topographic areas (ridges) function as recharge areas; water infiltrates through the surface, percolates into regolith, and flows downward and laterally through fractures in the shallow bedrock. Hydraulic conductivity decreases with increasing depth, and ground water flows primarily in the lateral direction along fractures or bedding planes or through coal seams. If vertical hydraulic conductivity is negligible, ground water continues to flow laterally, discharging as springs or seeps on hill slopes. Where vertical hydraulic conductivity is appreciable, groundwater follows a stair step path through the regolith, fractures, bedding planes, and coal seams, discharging to streams and (or) recharging coal seams at depth.
Permeable coal seams probably underlie valleys in the region; however, aquifer-test data indicate that the horizontal hydraulic conductivity of coal is a function of depth and probably decreases under ridges because of increased overburden pressures. Ground water beneath valleys that does not discharge to streams probably flows down gradient as underflow beneath the streams. Topographic relief in the area provides large hydraulic-head differences (greater than 300 ft in some instances) for the ground-water-flow system. Transmissivity data from the range of depths tested during this study indicate that most ground-water flow takes place at moderate depths (less than 300 ft) and that little deep regional ground-water flow occurs.
","language":"English","publisher":"U.S. Government Printing Office","doi":"10.3133/wsp2388","collaboration":"Prepared in cooperation with the Virginia Department of Mines, Minerals, and Energy, Division of Mined Land Reclamation, and the Powell River Project","usgsCitation":"Harlow, G., and LeCain, G.D., 1993, Hydraulic characteristics of, and ground-water flow in, coal-bearing rocks of southwestern Virginia: U.S. Geological Survey Water Supply Paper 2388, Report: vi, 36 p.; 1 Plate: 25.32 x 19.85 inches, https://doi.org/10.3133/wsp2388.","productDescription":"Report: vi, 36 p.; 1 Plate: 25.32 x 19.85 inches","costCenters":[],"links":[{"id":137029,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":393269,"rank":4,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wsp/wsp_2388/pdf/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":393268,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wsp/wsp_2388/pdf/wsp_2388.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":15,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/wsp/wsp_2388/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Virginia","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -83.21044921875,\n 36.641977814705946\n ],\n [\n -81.5789794921875,\n 36.641977814705946\n ],\n [\n -81.5789794921875,\n 37.58376576718623\n ],\n [\n -83.21044921875,\n 37.58376576718623\n ],\n [\n -83.21044921875,\n 36.641977814705946\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a51e4b07f02db62a2da","contributors":{"authors":[{"text":"Harlow, George E. Jr. geharlow@usgs.gov","contributorId":383,"corporation":false,"usgs":true,"family":"Harlow","given":"George E.","suffix":"Jr.","email":"geharlow@usgs.gov","affiliations":[{"id":614,"text":"Virginia Water Science Center","active":true,"usgs":true}],"preferred":false,"id":144181,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"LeCain, Gary D.","contributorId":52207,"corporation":false,"usgs":true,"family":"LeCain","given":"Gary","email":"","middleInitial":"D.","affiliations":[],"preferred":false,"id":144182,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":20391,"text":"ofr92642 - 1993 - Ground-water-quality assessment of the Central Oklahoma Aquifer, Oklahoma: Geochemical and geohydrologic investigations","interactions":[{"subject":{"id":20391,"text":"ofr92642 - 1993 - Ground-water-quality assessment of the Central Oklahoma Aquifer, Oklahoma: Geochemical and geohydrologic investigations","indexId":"ofr92642","publicationYear":"1993","noYear":false,"title":"Ground-water-quality assessment of the Central Oklahoma Aquifer, Oklahoma: Geochemical and geohydrologic investigations"},"predicate":"SUPERSEDED_BY","object":{"id":2440,"text":"wsp2357C - 1996 - Ground-water-quality assessment of the central Oklahoma Aquifer, Oklahoma — Geochemical and geohydrologic investigations","indexId":"wsp2357C","publicationYear":"1996","noYear":false,"chapter":"C","title":"Ground-water-quality assessment of the central Oklahoma Aquifer, Oklahoma — Geochemical and geohydrologic investigations"},"id":1}],"supersededBy":{"id":2440,"text":"wsp2357C - 1996 - Ground-water-quality assessment of the central Oklahoma Aquifer, Oklahoma — Geochemical and geohydrologic investigations","indexId":"wsp2357C","publicationYear":"1996","noYear":false,"title":"Ground-water-quality assessment of the central Oklahoma Aquifer, Oklahoma — Geochemical and geohydrologic investigations"},"lastModifiedDate":"2019-12-08T14:25:15","indexId":"ofr92642","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"92-642","title":"Ground-water-quality assessment of the Central Oklahoma Aquifer, Oklahoma: Geochemical and geohydrologic investigations","docAbstract":"The National Water-Quality Assessment pilot project for the Central Oklahoma aquifer examined the chemical and isotopic composition of ground water, the abundances and textures of minerals in core samples, and water levels and hydraulic properties in the flow system to identify geochemical reactions occurring in the aquifer and rates and directions of ground-water flow. The aquifer underlies 3,000 square miles of central Oklahoma and consists of Permian red beds, including parts of the Permian Garber Sandstone, Wellington Formation, and Chase, Council Grove, and Admire Groups, and Quaternary alluvium and terrace deposits.
In the part of the Garber Sandstone and Wellington Formation that is not confined by the Permian Hennessey Group, calcium, magnesium, and bicarbonate are the dominant ions in ground water; in the confined part of the Garber Sandstone and Wellington Formation and in the Chase, Council Grove, and Admire Groups, sodium and bicarbonate are the dominant ions in ground water. Nearly all of the Central Oklahoma aquifer has an oxic or post-oxic environment as indicated by the large dissolved concentrations of oxygen, nitrate, arsenic(V), chromium(VI), selenium(VI), vanadium, and uranium. Sulfidic and methanic environments are virtually absent.
Petrographic textures indicate dolomite, calcite, sodic plagioclase, potassium feldspars, chlorite, rock fragments, and micas are dissolving, and iron oxides, manganese oxides, kaolinite, and quartz are precipitating. Variations in the quantity of exchangeable sodium in clays indicate that cation exchange is occurring within the aquifer. Gypsum may dissolve locally within the aquifer, as indicated by ground water with large concentra-tions of sulfate, but gypsum was not observed in core samples. Rainwater is not a major source for most elements in ground water, but evapotranspiration could cause rainwater to be a significant source of potassium, sulfate, phosphate and nitrogen species. Brines derived from seawater are the most likely source of bromide and chloride in the aquifer.
The dominant reaction in recharge is the uptake of carbon dioxide gas from the unsaturated zone (about 2.0 to 4.0 millimoles per liter) and the dissolution of dolomite (about 0.3 to 1.0 millimoles per liter). This reaction generates calcium, magnesium, and bicarbonate water composition. If dolomite does not dissolve to equilibrium, pH values range from 6.0 to 7.3; if dolomite dissolves to equilibrium, pH values are about 7.5. By the time recharge enters the deeper flow system, all ground water is saturated or supersaturated with dolomite and calcite.
After carbonate-mineral equilibration has occurred, cation exchange of calcium and magnesium for sodium is the dominant geochemical reaction, which occurs to a substantial extent only in parts of the aquifer. Mass transfers of cation exchange greater than 2.0 millimoles per liter occur in the confined part of the Garber Sandstone and Wellington Formation and in parts of the Chase, Council Grove, and Admire Groups. Associated with cation exchange is dissolution of small quantities of dolomite, calcite, biotite, chlorite, plagioclase, or potassium feldspar, which produces pH values that range from 8.6 to 9.1.
Large tritium concentrations indicate ground-water ages of less than about 40 years for most samples of recharge. Carbon-14 ages for samples from the unconfined aquifer generally are less than 10,000 years. Carbon-14 ages of ground water in the confined part of the aquifer range from about 10,000 to 30,000 years or older. These ages produce a time trend in deuterium values that qualitatively is consistent with the timing of the transition from the last glacial maximum to the present interglacial period.
The most transmissive geologic units in the Central Oklahoma aquifer are the Garber Sandstone and Wellington Formation and the alluvium and terrace deposits; the Chase, Council Grove, and Admire Groups are less transmissive on the basis of available specific-capacity data. The transmissivities of the Permian geologic units depend largely on the percentage of sandstone; the percentage is greatest in the central part of the aquifer and decreases in all directions from this central part. Because of large mudstone and siltstone contents, the Hennessey Group and the Vanoss Formation are assumed to be confining units above and below the aquifer. The Cimarron and Canadian Rivers are defined to be the northern and southern extent of the aquifer because of decreases in transmissivity beyond the rivers and because there is no indication of ground-water underflow at these rivers. The eastern boundary of the aquifer is the limit of the outcrop of the Chase, Council Grove, and Admire Groups. The presence of brines in the western part of the study unit and below the aquifer indicate the extent of the freshwater flow system in these directions.
Regional ground-water flow is west to east; the Deep Fork is a major discharge area for the regional flow system. Local flow systems are present within the unconfined part of the study unit. Most streams are gaining streams, and very few losing streams are evident.
Median values of aquifer properties were estimated as follows: recharge to the saturated zone, 1.6 inches per year; evapotranspiration of water that never reaches the saturated zone, 25 to 30 inches per year; porosity, 0.22; storage coefficient, 0.0002; transmissivity, 260 to 450 feet squared per day; horizontal hydraulic conductivity, 4.5 feet per day; and the ratio of horizontal to vertical hydraulic conductivity, 10,000. Reported ground-water withdrawals peaked in 1985 at 13,900 million gallons but had decreased to 7,860 million gallons by 1989. Unreported domestic withdrawals were estimated to be 1,685 million gallons in 1980.
The flow system in the aquifer can be considered to have three major components: (1) A shallow, local flow system in the unconfined part of the aquifer, (2) a deep, regional flow system in the unconfined part of the aquifer, and (3) a deep, regional flow system in the confined part of the aquifer. In the shallow, local flow system, water flows relatively quickly along short flowlines from the point of recharge to the point of discharge at the nearest stream. Many water samples from shallow wells contain large concentrations of tritium, which indicate ground-water ages of less than 40 years. In the deep, regional flow system in the unconfined part of the aquifer, water takes more time to flow along longer flowlines than in the shallow, local flow system. Much of the water in this flow system is recharged along ridges that correspond to ground-water divides between drainage basins. Transit times for water recharging the aquifer along ridges is greater than 5,000 years, computed using a numerical flow model in conjunction with a particle-tracking model. The deep, regional flow system in the confined part of the Garber Sandstone and Wellington Formation is recharged from a small part of the outcrop area of the Garber Sandstone. From the recharge area, water flows west under the confining unit to discharge to streams as far away as the Cimarron River. Flowpaths are relatively long, as much as 50 miles. The transit times in this flow system range from thousands to tens of thousands of years.
The long-term hydrogeochemical process occurring in the Central Oklahoma aquifer is removal of unstable minerals, including dolomite, calcite, biotite, chlorite, and feldspars, and the replacement of exchangeable sodium on clays with calcium and magnesium. Over geologic time, the flux of water through the rapidly moving, local flow system has been sufficient to remove most of the dolomite, calcite, and exchangeable sodium. In places, chlorite and feldspars have been removed. In the deep, regional flow system of the unconfined part of the Garber Sandstone and Wellington Formation, the flux of water has been sufficient to remove most of the exchangeable sodium, but carbonate minerals remain sufficiently abundant to maintain dolomite and calcite equilibrium. In the confined part of the Garber Sandstone and Wellington Formation and in the less transmissive parts of the unconfined aquifer, including the Chase, Council Grove, and Admire Groups, ground-water flow is slowest, and the flux of water and extent of reaction have been insufficient to remove either the carbonate minerals or the exchangeable sodium on clays.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/ofr92642","usgsCitation":"Parkhurst, D.L., Christenson, S.C., and Breit, G.N., 1993, Ground-water-quality assessment of the Central Oklahoma Aquifer, Oklahoma: Geochemical and geohydrologic investigations: U.S. Geological Survey Open-File Report 92-642, viii, 113 p., https://doi.org/10.3133/ofr92642.","productDescription":"viii, 113 p.","costCenters":[{"id":589,"text":"Toxic Substances Hydrology Program","active":true,"usgs":true}],"links":[{"id":153649,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1992/0642/report-thumb.jpg"},{"id":359239,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1992/0642/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United States","state":"Oklahoma","otherGeospatial":"Central Oklahoma Aquifer","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -97.75,\n 34.75\n ],\n [\n -96.75,\n 34.75\n ],\n [\n -96.75,\n 36\n ],\n [\n -97.75,\n 36\n ],\n [\n -97.75,\n 34.75\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a96e4b07f02db65a11a","contributors":{"authors":[{"text":"Parkhurst, David L. 0000-0003-3348-1544 dlpark@usgs.gov","orcid":"https://orcid.org/0000-0003-3348-1544","contributorId":1088,"corporation":false,"usgs":true,"family":"Parkhurst","given":"David","email":"dlpark@usgs.gov","middleInitial":"L.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":182572,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Christenson, Scott C. schris@usgs.gov","contributorId":980,"corporation":false,"usgs":true,"family":"Christenson","given":"Scott","email":"schris@usgs.gov","middleInitial":"C.","affiliations":[{"id":516,"text":"Oklahoma Water Science Center","active":true,"usgs":true}],"preferred":true,"id":182574,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Breit, George N. 0000-0003-2188-6798 gbreit@usgs.gov","orcid":"https://orcid.org/0000-0003-2188-6798","contributorId":1480,"corporation":false,"usgs":true,"family":"Breit","given":"George","email":"gbreit@usgs.gov","middleInitial":"N.","affiliations":[{"id":211,"text":"Crustal Geophysics and Geochemistry Science Center","active":true,"usgs":true},{"id":171,"text":"Central Mineral and Environmental Resources Science Center","active":true,"usgs":true}],"preferred":true,"id":182573,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":28617,"text":"wri934043 - 1993 - Hydrogeologic setting and hydrologic data of the Smoke Creek Desert basin, Washoe County, Nevada, and Lassen County, California, water years 1988-90","interactions":[],"lastModifiedDate":"2012-02-02T00:08:47","indexId":"wri934043","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","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":"93-4043","title":"Hydrogeologic setting and hydrologic data of the Smoke Creek Desert basin, Washoe County, Nevada, and Lassen County, California, water years 1988-90","docAbstract":"Smoke Creek Desert is a potential source of water for urban development in Washoe County, Nevada. Hydrogeologic data were collected from 1988 to 1990 to learn more about surface- and ground-water flow in the basin. Impermeable rocks form a boundary to ground-water flow on the east side of the basin and at unknown depths at the base of the flow system. Permeable volcanic rocks on the west and north sides of the basin represent a previously unrecognized aquifer and provide potential avenues for interbasin flow. Geophysical data indicate that basin-fill sediments are about 2,000 feet thick near the center of the basin. The geometry of the aquifers, however, remains largely unknown. Measurements of water levels, pressure head, flow rate, water temperature, and specific conductance at 19 wells show little change from 1988 to 1990. Chemically, ground water begins as a dilute sodium and calcium bicarbonate water in the mountain blocks, changes to a slightly saline sodium bicarbonate solution beneath the alluvial fans, and becomes a briny sodium chloride water near the playa. Concentrations of several inorganic constituents in the briny water near the playa commonly exceed Nevada drinking-water standards. Ground water in the Honey Lake basin and Smoke Creek Desert basin has similar stable-isotope composition, except near Sand Pass. If interbasin flow takes place, it likely occurs at depths greater than 400-600 feet beneath Sand Pass or through volcanic rocks to the north of Sand Pass. Measure- ments of streamflow indicate that about 2,800 acre-feet/year discharged from volcanic rocks to streamflow and a minimum of 7.300 acre-feet/year infiltrated and recharged unconsolidated sediments near Smoke, Buffalo, and Squaw Creeks during the period of study. Also about 1,500 acre-feet per year was lost to evapotranspiration along the channel of Smoke Creek, and about 1,680 acre-feet per year of runoff from Smoke, Buffalo, and Squaw Creeks was probably lost to evaporation from the playa.","language":"ENGLISH","publisher":"U.S. Geological Survey ;\r\nEarth Science Information Center, Open-File Reports Section [distributor],","doi":"10.3133/wri934043","usgsCitation":"Maurer, D.K., 1993, Hydrogeologic setting and hydrologic data of the Smoke Creek Desert basin, Washoe County, Nevada, and Lassen County, California, water years 1988-90: U.S. Geological Survey Water-Resources Investigations Report 93-4043, v, 45 p. :ill., maps (1 col.) ;28 cm., https://doi.org/10.3133/wri934043.","productDescription":"v, 45 p. :ill., maps (1 col.) ;28 cm.","costCenters":[],"links":[{"id":123516,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1993/4043/report-thumb.jpg"},{"id":57444,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1993/4043/plate-1.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57445,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1993/4043/plate-2.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":57446,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1993/4043/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ee4b07f02db6278ed","contributors":{"authors":[{"text":"Maurer, D. K.","contributorId":37757,"corporation":false,"usgs":true,"family":"Maurer","given":"D.","email":"","middleInitial":"K.","affiliations":[],"preferred":false,"id":200122,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":19483,"text":"ofr93494 - 1993 - Saltwater in shallow aquifers in east-central and northeastern Louisiana and southeastern Arkansas","interactions":[],"lastModifiedDate":"2012-02-02T00:07:29","indexId":"ofr93494","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"93-494","title":"Saltwater in shallow aquifers in east-central and northeastern Louisiana and southeastern Arkansas","docAbstract":"The chemistry of water from irrigation and monitor wells in east-central Louisiana indicates the presence of saltwater in the Mississippi River alluvial aquifer and the uppermost part of the Jasper aquifer system. The salinity of this groundwater makes it unsuitable for use in irrigation of salt-sensitive crops. The geochemistry of bromide (Br) and chloride (Cl) ions and strontium (Sr) isotopes indicated that this saltwater could have originated from the mixing of freshwater with briny water originating from the Carrizo-Wilcox aquifer at altitudes from 5,800 to 6,800 feet below sea level. However, in the absence of data on the concentrations of Br and Cl ions and the values of (87)Sr/(86)Sr in water from the Catahoula, Cockfield, and Sparta aquifers within the study area, no conclusive statement can be made on the origin of saltwater in the alluvial aquifer and the uppermost part of the Jasper aquifer system. Analyses of water from irrigation wells in northeastern Louisiana and southeastern Arkansas indicated the presence of saltwater in the Mississippi River alluvial aquifer. Saltwater probably moves from southern Chicot County, Arkansas, into northeastern Louisiana by flowing to the southwest along a fluvial channel eroded into the Cockfield Formation. Saltwater in the Mississippi River alluvial aquifer in northeastern Louisiana and southeastern Arkansas can be hazardous to salt-sensitive crops, such as rice, when used for irrigation. The geochemistry of Br and Cl ions indicated that saltwater in the Mississippi River alluvial aquifer of southern Chicot County in southeastern Arkansas has two geochemically distinct sources. One source, which has Br/Cl ratios less than that of modern seawater, could be derived from saltwater present in aquifers of Tertiary age; this saltwater could enter the alluvial aquifer by upward flow from below as part of the natural regional groundwater flow pattern. The other source, which has Br/Cl ratios greater than that of modern sea- water, could be derived, in part, from briny water present in the Smackover Formation at altitudes from 5,500 to 6,500 feet below sea level. This briny water could enter the alluvial aquifer by upward migration along a fault that penetrates from near land surface into the Smackover Formation.","language":"ENGLISH","publisher":"U.S. Geological Survey ;\r\nU.S. Geological Survey, Earth Science Information Center, Open-File Reports Section [distributor],","doi":"10.3133/ofr93494","usgsCitation":"Huff, G.F., and Bonck, J., 1993, Saltwater in shallow aquifers in east-central and northeastern Louisiana and southeastern Arkansas: U.S. Geological Survey Open-File Report 93-494, v, 54 p. :ill., maps ;28 cm., https://doi.org/10.3133/ofr93494.","productDescription":"v, 54 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":151863,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1993/0494/report-thumb.jpg"},{"id":48953,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1993/0494/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db649eb3","contributors":{"authors":[{"text":"Huff, G. F.","contributorId":11229,"corporation":false,"usgs":true,"family":"Huff","given":"G.","email":"","middleInitial":"F.","affiliations":[],"preferred":false,"id":180988,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Bonck, J.P.","contributorId":14443,"corporation":false,"usgs":true,"family":"Bonck","given":"J.P.","email":"","affiliations":[],"preferred":false,"id":180989,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":27499,"text":"wri934006 - 1993 - Hydrology and water quality of Reedy Creek in the Reedy Creek Improvement District, central Florida, 1986-89","interactions":[],"lastModifiedDate":"2012-02-02T00:08:44","indexId":"wri934006","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","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":"93-4006","title":"Hydrology and water quality of Reedy Creek in the Reedy Creek Improvement District, central Florida, 1986-89","docAbstract":"The Reedy Creek Improvement District encompasses an area of about 43 sq mi in southwestern Orange and northwestern Osceola Counties in central Florida. The District operates a wastewater-treatment plant that discharges through two forested wetland areas and a percolation-pond system into Reedy Creek. Discharges from these wetland systems provide a relatively steady base flow which maintains streamflow in Reedy Creek during periods of low rainfall. Streamflows during the study were characterized by relatively long periods of below-average discharge interspersed with periods of high discharges. The highest mean discharges were recorded in 1988 and the lowest mean discharges were recorded in 1989. Water-quality data collection included the operation of four continuous water-quality monitors recording hourly water temperature, specific conductance, and dissolved oxygen concentration, and the collection of water-quality samples. Dissolved oxygen concentrations were similar for all stations on Reedy Creek and frequently were less than the minimum Florida standard of 5.0 mg/L. These low dissolved oxygen concentrations probably are the result of natural conditions. Nutrient analyses of water-quality samples were used to compute loadings into and out of a wetland conservation area in the southern part of the District and in the reach of Reedy Creek downstream from the wastewater discharges. Overall retention percentages for 1986-89, not including atmospheric and precipitation inputs, were 59.1 percent for total ammonia nitrogen: 3.4 percent for total organic nitrogen, which was the predominant nitrogen species: 33.2 percent for total nitrate nitrogen; 27.0 percent for total phosphorus; and 26.0 percent for total organic carbon. Highest loading inputs to the wetland conservation area were from the reach of Reedy Creek receiving wastewater discharge. Discharges from the wetlands receiving wastewater and entering the wetland conservation area during 1988 carried 16.3 percent of the total nitrogen load, and 25.0 percent of the total phosphorus load: during 1989 the discharges carried 22.0 percent of the total N and 21.0 percent of the total P.","language":"ENGLISH","publisher":"U.S. Geological Survey ;\r\nU.S.G.S. Earth Science Information Center, Open-File Reports Section [distributor],","doi":"10.3133/wri934006","usgsCitation":"Hampson, P.S., 1993, Hydrology and water quality of Reedy Creek in the Reedy Creek Improvement District, central Florida, 1986-89: U.S. Geological Survey Water-Resources Investigations Report 93-4006, vi, 57 p. :ill., maps ;28 cm., https://doi.org/10.3133/wri934006.","productDescription":"vi, 57 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":123532,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1993/4006/report-thumb.jpg"},{"id":56349,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1993/4006/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a18e4b07f02db604da7","contributors":{"authors":[{"text":"Hampson, P. S.","contributorId":58677,"corporation":false,"usgs":true,"family":"Hampson","given":"P.","email":"","middleInitial":"S.","affiliations":[],"preferred":false,"id":198219,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":54685,"text":"wdrMI921 - 1993 - Water resources data, Michigan, water year 1992","interactions":[],"lastModifiedDate":"2017-08-10T14:25:06","indexId":"wdrMI921","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":340,"text":"Water Data Report","code":"WDR","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"MI-92-1","title":"Water resources data, Michigan, water year 1992","docAbstract":"Water resources data for the 1992 water year for Michigan consists of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and ground water levels. This report contains discharge records for 145 streamflow-gaging stations; stage only records for 1 river-gaging station and 8 lake-gaging stations; stage and contents for 4 lakes and reservoirs; water-quality records for 22 streamflow-gaging stations; water-level records for 43 ground-water wells. Also included are 33 crest-stage partial-record stations and 6 low-flow partial-record stations. Additional water data were collected at various sites not involved in the systematic data-collection program. Miscellaneous data were collected at 84 measuring sites and 20 water-quality sampling sites. These data represent that part of the National Water Data System collected by the U.S. Geological Survey and cooperating State, local, and Federal agencies in Michigan.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wdrMI921","collaboration":"Prepared in cooperation with the State of Michigan and with other agencies","usgsCitation":"Blumer, S.P., Behrendt, T., Larson, W., Minnerick, R., LeuVoy, R., and Whited, C., 1993, Water resources data, Michigan, water year 1992: U.S. Geological Survey Water Data Report MI-92-1, xvi, 303 p., https://doi.org/10.3133/wdrMI921.","productDescription":"xvi, 303 p.","costCenters":[{"id":382,"text":"Michigan Water Science Center","active":true,"usgs":true}],"links":[{"id":174141,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wdr/1992/mi-92-1/report-thumb.jpg"},{"id":344723,"rank":2,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wdr/1992/mi-92-1/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"country":"United 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J.","affiliations":[],"preferred":false,"id":251164,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"LeuVoy, R.L.","contributorId":56706,"corporation":false,"usgs":true,"family":"LeuVoy","given":"R.L.","email":"","affiliations":[],"preferred":false,"id":251165,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Whited, C.R.","contributorId":49387,"corporation":false,"usgs":true,"family":"Whited","given":"C.R.","email":"","affiliations":[],"preferred":false,"id":707454,"contributorType":{"id":1,"text":"Authors"},"rank":6}]}} ,{"id":19218,"text":"ofr91532 - 1993 - Modifications to the modular three-dimensional finite-difference ground-water flow model used for the Columbia Plateau Regional Aquifer-System Analysis, Washington, Oregon, and Idaho","interactions":[],"lastModifiedDate":"2012-02-02T00:07:31","indexId":"ofr91532","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":330,"text":"Open-File Report","code":"OFR","onlineIssn":"2331-1258","printIssn":"0196-1497","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"91-532","title":"Modifications to the modular three-dimensional finite-difference ground-water flow model used for the Columbia Plateau Regional Aquifer-System Analysis, Washington, Oregon, and Idaho","docAbstract":"The report documents modifications to the U.S. Geological Survey's modular three-dimensional finite-difference ground-water flow model used for a regional aquifer-system analysis of the Columbia Plateau. The report, which describes the concepts and mathematical basis for the modifications, is intended for potential users who are familiar with the original modular model. The modifications permit flow from a layer to any adjacent layer, allow the model to retain a cell of a layer that has been cut completely through by a canyon, and allow placing ground-water flow barriers on only specified branch conductances; a special version of the modified model uses a convergent grid. The report describes the data-input items that this modified model must read.","language":"ENGLISH","publisher":"U.S. Geological Survey ;\r\nEarth Science Information Center, Open-File Reports Section [distributor],","doi":"10.3133/ofr91532","usgsCitation":"Hansen, A.J., 1993, Modifications to the modular three-dimensional finite-difference ground-water flow model used for the Columbia Plateau Regional Aquifer-System Analysis, Washington, Oregon, and Idaho: U.S. Geological Survey Open-File Report 91-532, iv, 83 p. :ill., map ;28 cm., https://doi.org/10.3133/ofr91532.","productDescription":"iv, 83 p. :ill., map ;28 cm.","costCenters":[],"links":[{"id":151625,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/1991/0532/report-thumb.jpg"},{"id":48678,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/1991/0532/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b04e4b07f02db69962a","contributors":{"authors":[{"text":"Hansen, A. J. Jr.","contributorId":29840,"corporation":false,"usgs":true,"family":"Hansen","given":"A.","suffix":"Jr.","email":"","middleInitial":"J.","affiliations":[],"preferred":false,"id":180510,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":44779,"text":"wri924121 - 1993 - Thickness of the Mississippi River Valley confining unit, eastern Arkansas","interactions":[],"lastModifiedDate":"2012-02-02T00:10:49","indexId":"wri924121","displayToPublicDate":"1994-01-01T00:00:00","publicationYear":"1993","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":"92-4121","title":"Thickness of the Mississippi River Valley confining unit, eastern Arkansas","docAbstract":"Concern arose in the late 1980s over the vulnerability of the Mississippi Valley alluvial aquifer to contamination from potential surface sources related to pesticide or fertilizer use, industrial activity, landfills, or livestock operations. In 1990 a study was begun to locate areas in Arkansas where the groundwater flow system is susceptible to contamination by surface contaminants. As a part of that effort, the thickness of the clay confining unit overlying the alluvial aquifer in eastern Arkansas was mapped. The study area included all or parts of 27 counties in eastern Arkansas that are underlain by the alluvial aquifer and its overlying confining unit. A database of well attributes was compiled based on data from driller's logs and from published data and stored in computer files. A confining-unit thickness map was created from the driller's-log database using geographic information systems technology. A computer program was then used to contour the data. Where the confining unit is present, it ranges in thickness from 0 feet in many locations in the study area to 140 feet in northeastern Greene County and can vary substantially over short distances. Although general trends in the thickness of the confining unit are apparent, the thickness has great spatial variability. An apparent relation exists between thickness of the confining unit and spatial variability in thickness. In areas where the thickness of the confining unit is 40 feet or less, such as in Clay, eastern Craighead, northwestern Mississippi, and Woodruff Counties, thickness of the unit tends robe more uniform than in areas where the thickness of the unit generally exceeds 40 feet, such as in Arkansas, Lonoke, and Prairie Counties. At some sites the confining unit is very thick compared to its thickness in the immediate surrounding area. Locations of abandoned Mississippi River meander channels generally coincide with location of locally thick confining unit. Deposition of the confining unit onto the coarser alluvial aquifer deposits has reduced the relief of the land surface. Hence, the altitude of the top of the alluvial aquifer varies more than the altitude of the land surface and is indicative of a depositional setting.","language":"ENGLISH","doi":"10.3133/wri924121","usgsCitation":"Gonthier, G., and Mahon, G.L., 1993, Thickness of the Mississippi River Valley confining unit, eastern Arkansas: U.S. Geological Survey Water-Resources Investigations Report 92-4121, 1 map on 3 sheets ; 212 x 87 cm., sheets 107 x 122 cm., folded in envelope 32 x 24 cm. + 1 data sheet (96 x 97 cm.), https://doi.org/10.3133/wri924121.","productDescription":"1 map on 3 sheets ; 212 x 87 cm., sheets 107 x 122 cm., folded in envelope 32 x 24 cm. + 1 data sheet (96 x 97 cm.)","costCenters":[],"links":[{"id":258714,"rank":400,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1992/4121/plate-1.pdf","size":"9303","linkFileType":{"id":1,"text":"pdf"}},{"id":258715,"rank":401,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1992/4121/plate-2.pdf","size":"9282","linkFileType":{"id":1,"text":"pdf"}},{"id":258716,"rank":402,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1992/4121/plate-3.pdf","size":"4707","linkFileType":{"id":1,"text":"pdf"}},{"id":258717,"rank":403,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/1992/4121/plate-4.pdf","size":"5370","linkFileType":{"id":1,"text":"pdf"}},{"id":258718,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1992/4121/report.pdf","size":"40","linkFileType":{"id":1,"text":"pdf"}},{"id":258719,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1992/4121/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a54e4b07f02db62c1b6","contributors":{"authors":[{"text":"Gonthier, Gerard 0000-0003-4078-8579 gonthier@usgs.gov","orcid":"https://orcid.org/0000-0003-4078-8579","contributorId":3141,"corporation":false,"usgs":true,"family":"Gonthier","given":"Gerard ","email":"gonthier@usgs.gov","affiliations":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"preferred":false,"id":230417,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Mahon, Gary L. 0000-0002-7410-0261 glmahon@usgs.gov","orcid":"https://orcid.org/0000-0002-7410-0261","contributorId":270,"corporation":false,"usgs":true,"family":"Mahon","given":"Gary","email":"glmahon@usgs.gov","middleInitial":"L.","affiliations":[{"id":566,"text":"Southeast Ecological Science Center","active":true,"usgs":true},{"id":17705,"text":"Wetland and Aquatic Research Center","active":true,"usgs":true},{"id":501,"text":"Office of Science Quality and Integrity","active":true,"usgs":true}],"preferred":true,"id":230416,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ]}