Two new packages for the U.S. Geological Survey modular finite-difference ground-water-flow model MODFLOW-2000 are documented. The new packages provide flexibility in simulating evapotranspiration and drain features not provided by the MODFLOW-2000 Evapotranspiration (EVT) and Drain (DRN) Packages. The report describes conceptualization of the packages, input instructions, listings and explanations of the source code, and example simulations.
The new Evapotranspiration Segments (ETS1) Package allows simulation of evapotranspiration with a user-defined relation between evapotranspiration rate and hydraulic head. This capability provides a degree of flexibility not supported by the EVT Package, which has been available in MODFLOW since its initial release. In the ETS1 Package, the relation of evapotranspiration rate to hydraulic head is conceptualized as a segmented line between an evaporation surface, defined as the elevation where the evapotranspiration rate reaches a maximum, and an elevation located at an extinction depth below the evaporation surface, where the evapotranspiration rate reaches zero. The user supplies input to define as many intermediate segment endpoints as desired to define the relation of evapotranspiration rate to head between these two elevations. The EVT Package, in contrast, simulates evapotranspiration with a single linear function.
The new Drain Return (DRT1) Package can be used to simulate the return flow of water discharged from a drain feature back into the ground-water system. The DRN Package, which has been available in MODFLOW since its initial release, does not have the capability to simulate return of flow. If the return-flow option of the DRT1 Package is selected, for each cell designated as a drain-return cell, the user has the option of specifying a proportion of the water simulated as leaving the ground-water system through the drain feature that is to be simulated as returning simultaneously to one other cell in the model.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00466","issn":"0094-9140","usgsCitation":"Banta, E., 2000, MODFLOW-2000, the U.S. Geological Survey Modular Ground-Water Model; documentation of packages for simulating evapotranspiration with a segmented function (ETS1) and drains with return flow (DRT1): U.S. Geological Survey Open-File Report 2000-466, vi, 127 p., https://doi.org/10.3133/ofr00466.","productDescription":"vi, 127 p.","costCenters":[],"links":[{"id":155983,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0466/report-thumb.jpg"},{"id":51826,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0466/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db648cd0","contributors":{"authors":[{"text":"Banta, Edward R.","contributorId":49820,"corporation":false,"usgs":true,"family":"Banta","given":"Edward R.","affiliations":[],"preferred":false,"id":188182,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":25975,"text":"wri004027 - 2000 - Effects of land use on recharge potential of surficial and shallow bedrock aquifers in the upper Illinois River basin","interactions":[],"lastModifiedDate":"2019-09-23T14:00:57","indexId":"wri004027","displayToPublicDate":"2001-06-01T00:00:00","publicationYear":"2000","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":"2000-4027","displayTitle":"Effects of Land Use on Recharge Potential of Surficial and Shallow Bedrock Aquifers in the Upper Illinois River Basin","title":"Effects of land use on recharge potential of surficial and shallow bedrock aquifers in the upper Illinois River basin","docAbstract":"The upper Illinois River Basin (UIRB) is the 10,949-square-mile drainage area upstream from Ottawa, Illinois on the Illinois River and is one of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) program study units. To assist in the interpretation of groundwater data that will be collected during the course of the UIRB study, the study-unit team designed a spatial model to describe recharge potential of surficial and shallow bedrock aquifers. The following factors, identified as having an effect on recharge potential, were incorporated into the model: land use, soil permeability, type and thickness of surficial deposits, and uppermost bedrock geology. Other models designed to simulate recharge potential and the potential for contamination that were examined during the preparation of this model included factors similar to those included in this model, with the exception of land use. Land use and changes in land use over time, however, can affect recharge potential. The UIRB model was used to simulate recharge potential with and without incorporating land use. A comparison of the simulation results showed that recharge potential was overestimated in some areas and underestimated in other areas when land use was not included in the model. Comparisons of simulations that used 1970 and estimated 1990 land use showed changes in recharge potential over time.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri004027","collaboration":"National Water-Quality Assessment Program","usgsCitation":"Arnold, T., and Friedel, M.J., 2000, Effects of land use on recharge potential of surficial and shallow bedrock aquifers in the upper Illinois River basin: U.S. Geological Survey Water-Resources Investigations Report 2000-4027, vi, 18 p. , https://doi.org/10.3133/wri004027.","productDescription":"vi, 18 p. ","costCenters":[{"id":344,"text":"Illinois Water Science Center","active":true,"usgs":true}],"links":[{"id":157378,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/2000/4027/coverthb.jpg"},{"id":1987,"rank":100,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/2000/4027/wrir00_4027.pdf","text":"Report","size":"3.00 MB","linkFileType":{"id":1,"text":"pdf"},"description":"WRI 00–4027"}],"contact":"Director, Central Midwest Water Science Center
U.S. Geological Survey
405 North Goodwin
Urbana, IL 61801
Two Habitat Suitability Index (HSI) models, developed by the U.S. Fish and Wildlife Service, were used to evaluate the effects of fine-grained (less than 2 millimeters) sediment on brook trout (Salvelinusfontinalis, Mitchill) and brown trout (Salmo trutta, Linnaeus) in 11 streams in west-central and southwestern Wisconsin. Our results indicated that fine-grained sediment limited brook trout habitat in 8 of 11 streams and brown trout habitat in only one stream. Lack of winter and escape cover for fry was the primary limiting variable for brown trout at 61 percent of the sites, and this factor also limited brook trout at several stations. Pool area or quality, in stream cover, streambank vegetation for erosion control, minimum flow, thalweg depth maximum, water temperature, spawning substrate, riffle dominant substrate, and dissolved oxygen also were limiting to trout in the study streams. Brook trout appeared to be more sensitive to the effects of fine-grained sediment than brown trout. The models for brook trout and brown trout appeared to be useful and objective screening tools for identifying variables limiting trout habitat in these streams. The models predicted that reduction in the amount of fine-grained sediment would improve brook trout habitat. These models may be valuable for establishing instream sediment-reduction goals; however, the decrease in sediment delivery needed to meet these goals cannot be estimated without quantitative data on land use practices and their effects on sediment delivery and retention by streams.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00435","issn":"0094-9140","collaboration":"Prepared in cooperation with the Wisconsin Department of Natural Resources","usgsCitation":"Scudder, B.C., Selbig, J., and Waschbusch, R., 2000, Determination of the effects of fine-grained sediment and other limiting variables on trout habitat for selected streams in Wisconsin: U.S. Geological Survey Open-File Report 2000-435, iv, 24 p., https://doi.org/10.3133/ofr00435.","productDescription":"iv, 24 p.","numberOfPages":"28","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":677,"text":"Wisconsin Water Science Center","active":true,"usgs":true}],"links":[{"id":53559,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0435/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":155747,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0435/report-thumb.jpg"}],"country":"United States","state":"Wisconsin","otherGeospatial":"Chippewa River, Kickapoo River, Trempealeau River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -92.867431640625,\n 44.66865287227321\n ],\n [\n -92.1588134765625,\n 44.30419567985762\n ],\n [\n -91.505126953125,\n 43.88601647043423\n ],\n [\n -91.4117431640625,\n 43.64005063334694\n ],\n [\n -91.3623046875,\n 43.54058479482877\n ],\n [\n -91.109619140625,\n 43.504736854976954\n ],\n [\n -90.4779052734375,\n 43.43696596521823\n ],\n [\n -89.5770263671875,\n 43.4249985081581\n ],\n [\n -90.054931640625,\n 44.27273816279087\n ],\n [\n -91.1920166015625,\n 44.968684437948376\n ],\n [\n -91.4666748046875,\n 45.178164812206376\n ],\n [\n -91.8017578125,\n 45.34056313889858\n ],\n [\n -92.9937744140625,\n 45.24008561090264\n ],\n [\n -93.2464599609375,\n 45.03859654645257\n ],\n [\n -92.867431640625,\n 44.66865287227321\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa8e4b07f02db667534","contributors":{"authors":[{"text":"Scudder, Barbara C.","contributorId":100319,"corporation":false,"usgs":true,"family":"Scudder","given":"Barbara","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":192031,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Selbig, J.W.","contributorId":18024,"corporation":false,"usgs":true,"family":"Selbig","given":"J.W.","email":"","affiliations":[],"preferred":false,"id":192030,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Waschbusch, R.J.","contributorId":107307,"corporation":false,"usgs":true,"family":"Waschbusch","given":"R.J.","affiliations":[],"preferred":false,"id":192032,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":26579,"text":"wri004084 - 2000 - Design, revision, and application of ground-water flow models for simulation of selected water-management scenarios in the coastal area of Georgia and adjacent parts of South Carolina and Florida","interactions":[],"lastModifiedDate":"2017-01-18T16:00:29","indexId":"wri004084","displayToPublicDate":"2001-06-01T00:00:00","publicationYear":"2000","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":"2000-4084","title":"Design, revision, and application of ground-water flow models for simulation of selected water-management scenarios in the coastal area of Georgia and adjacent parts of South Carolina and Florida","docAbstract":"Ground-water flow models of the Floridan aquifer system in the coastal area of Georgia and adjacent parts of South Carolina and Florida, were revised and updated to ensure consistency among the various models used, and to facilitate evaluation of the effects of pumping on the ground-water level near areas of saltwater contamination. The revised models, developed as part of regional and areal assessments of ground-water resources in coastal Georgia, are--the Regional Aquifer-System Analysis (RASA) model, the Glynn County area (Glynn) model, and the Savannah area (Savannah) model. Changes were made to hydraulic-property arrays of the RASA and Glynn models to ensure consistency among all of the models; results of theses changes are evidenced in revised water budgets and calibration statistics. \r\n\r\nFollowing revision, the three models were used to simulate 32 scenarios of hypothetical changes in pumpage that ranged from about 82 million gallons per day (Mgal/d) lower to about 438 Mgal/d higher, than the May 1985 pumping rate of 308 Mgal/d. The scenarios were developed by the Georgia Department of Natural Resources, Environmental Protection Division and the Chatham County-Savannah Metropolitan Planning Commission to evaluate water-management alternatives in coastal Georgia. Maps showing simulated ground-water-level decline and diagrams presenting changes in simulated flow rates are presented for each scenario. \r\n\r\nScenarios were grouped on the basis of pumping location--entire 24-county area, central subarea, Glynn-Wayne-Camden County subarea, and Savannah-Hilton Head Island subarea. For those scenarios that simulated decreased pumpage, the water level at both Brunswick and Hilton Head Island rose, decreasing the hydraulic gradient and reducing the potential for saltwater contamination. Conversely, in response to scenarios of increased pumpage, the water level at both locations declined, increasing the hydraulic gradient and increasing the potential for saltwater contamination. Pumpage effects on ground-water levels and related saltwater contamination at Brunswick and Hilton Head Island generally diminish with increased distance from these areas. \r\n\r\nAdditional development of the Upper Floridan aquifer may be possible in parts of the coastal area without affecting saltwater contamination at Brunswick or Hilton Head Island, due to the presence of two hydrologic boundaries--the Gulf Trough, separating the northern and central subareas; and the hypothesized Satilla Line, separating the central and southern subareas. These boundaries diminish pumpage effects across them; and may enable greater ground-water withdrawal in areas north of the Gulf Trough and south of the Satilla Line without producing appreciable drawdown at Brunswick or Hilton Head Island.","language":"ENGLISH","publisher":"U.S. Department of the Interior, U.S. Geological Survey ;\r\nBranch of Information Services [distributor],","doi":"10.3133/wri004084","usgsCitation":"Clarke, J.S., and Krause, R.E., 2000, Design, revision, and application of ground-water flow models for simulation of selected water-management scenarios in the coastal area of Georgia and adjacent parts of South Carolina and Florida: U.S. Geological Survey Water-Resources Investigations Report 2000-4084, vii, 93 p. :ill. (some col.), maps (some col.) ;28 cm., https://doi.org/10.3133/wri004084.","productDescription":"vii, 93 p. :ill. (some col.), maps (some col.) ;28 cm.","costCenters":[{"id":13634,"text":"South Atlantic Water Science Center","active":true,"usgs":true}],"links":[{"id":157364,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":1980,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/wri/wri00-4084/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Florida, Georgia, South Carolina","otherGeospatial":"Floridan aquifer system","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -83,30 ], [ -83,33 ], [ -80,33 ], [ -80,30 ], [ -83,30 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4aa8e4b07f02db667db7","contributors":{"authors":[{"text":"Clarke, John S. jsclarke@usgs.gov","contributorId":400,"corporation":false,"usgs":true,"family":"Clarke","given":"John","email":"jsclarke@usgs.gov","middleInitial":"S.","affiliations":[{"id":316,"text":"Georgia Water Science Center","active":true,"usgs":true}],"preferred":true,"id":196651,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Krause, Richard E.","contributorId":40185,"corporation":false,"usgs":true,"family":"Krause","given":"Richard","email":"","middleInitial":"E.","affiliations":[],"preferred":false,"id":196652,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":28209,"text":"wri004148 - 2000 - Hydrogeology, hydrologic budget, and water chemistry of the Medina Lake area, Texas","interactions":[],"lastModifiedDate":"2017-03-29T17:28:32","indexId":"wri004148","displayToPublicDate":"2001-06-01T00:00:00","publicationYear":"2000","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":"2000-4148","title":"Hydrogeology, hydrologic budget, and water chemistry of the Medina Lake area, Texas","docAbstract":"A three-phase study of the Medina Lake area in Texas was done to assess the hydrogeology and hydrology of Medina and Diversion Lakes combined (the lake system) and to determine what fraction of seepage losses from the lake system might enter the regional ground-water-flow system of the Edwards and (or) Trinity aquifers. Phase 1 consisted of revising the geologic framework for the Medina Lake area. Results of field mapping show that the upper member of the Glen Rose Limestone underlies Medina Lake and the intervening stream channel from the outflow of Medina Lake to the midpoint of Diversion Lake, where the Diversion Lake fault intersects Diversion Lake. A thin sequence of strata consisting primarily of the basal nodular and dolomitic members of the Kainer Formation of the Edwards Group, is present in the southern part of the study area. On the southern side of Medina Lake, the contact between the upper member of the Glen Rose Limestone and the basal nodular member is approximately 1,000 feet above mean sea level, and the contact between the basal nodular member and the dolomitic member is approximately 1,050 feet above mean sea level. The most porous and permeable part of the basal nodular member is about 1,045 feet above mean sea level. At these altitudes, Medina Lake is in hydrologic connection with rocks in the Edwards aquifer recharge zone, and Medina Lake appears to lose more water to the ground-water system along this bedding plane contact.
Hydrologic budgets calculated during phase 2 for Medina Lake, Diversion Lake, and Medina/Diversion Lakes combined indicate that: (1) losses from Medina and Diversion Lakes can be quantified; (2) a portion of those losses are entering the Edwards aquifer; and (3) losses to the Trinity aquifer in the Medina Lake area are minimal and within the error of the hydrologic budgets.
Hydrologic budgets based on streamflow, precipitation, evaporation, and change in lake storage were used to quantify losses (recharge) to the ground-water system from Medina Lake, Diversion Lake, and Medina/Diversion Lakes combined during October 1995–September 1996. Water losses from Medina Lake to the Edwards/Trinity aquifers ranged from -14.0 to 135 acre-feet per day; Diversion Lake ranged from -1.2 to 93.1 acre-feet per day; and Medina/Diversion Lakes combined ranged from 36.1 to 119 acre-feet per day.
Monthly average recharge during December 1995–July 1996 was estimated using an alternative method developed during this study (current study method) and compared to monthly average recharge during December 1995–July 1996 estimated using the existing USGS method and the Trans-Texas method. Recharge to the Edwards aquifer estimated using the current study method was about 69 and 73 percent of the recharge estimated using the USGS and Trans-Texas methods, respectively. The USGS and Trans-Texas methods overestimated recharge from Medina Lake compared to the recharge estimated with the current study method when Medina Lake stage was between about 1,027 and 1,032 feet above mean sea level and underestimated recharge from Medina Lake when lake stage was between about 1,036 and 1,045 feet above mean sea level. The USGS and Trans-Texas methods underestimated recharge from Diversion Lake compared to the recharge estimated with the current study method when Diversion Lake stage was greater than 913 feet above mean sea level and overestimated recharge from Diversion Lake when lake stage was less than 913 feet above mean sea level.
The water quality of Medina Lake and Medina River and in selected wells and springs in the Edwards and Trinity aquifers was characterized during phase 3 of the study. Environmental isotope analyses and geochemical modeling also were used to determine where water losses from the lake system might be entering the ground-water-flow system. Isotopic ratios of deuterium, oxygen, and strontium were analyzed in selected surface-water, lake-water, and ground-water samples to trace the isotopic “signature” of the lake water as it mixes with the ground water and to determine the fraction of lake water and ground water in selected Edwards aquifer wells. Isotopic data and geochemical modeling were used to show that lake water is moving into the Edwards aquifer in two fault blocks in the eastern Medina storage unit. One fault block is bounded on the north by the Vandenburg School fault and on the south by the Haby Crossing fault, and the second fault block is bounded on the north by the Diversion Lake fault and on the south by the Haby Crossing fault. In selected Edwards aquifer wells located southwest of Medina Lake and west of Diversion Lake, the proportion of lake water ranged from about 10 to 45 percent. Geochemical modeling using NETPATH confirms the degree of mixing between lake water and aquifer water shown by the isotopes.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri004148","collaboration":"In cooperation with the Bexar-Medina-Atascosa Counties Water Control and Improvement District No. 1, Bexar Metropolitan Water District, Texas Water Development Board, and Edwards Aquifer Authority","usgsCitation":"Lambert, R.B., Grimm, K.C., and Lee, R.W., 2000, Hydrogeology, hydrologic budget, and water chemistry of the Medina Lake area, Texas: U.S. Geological Survey Water-Resources Investigations Report 2000-4148, Report: v, 54 p.; 2 Plates: 30.00 x 25.00 inches and 25.00 x 25.50 inches, https://doi.org/10.3133/wri004148.","productDescription":"Report: v, 54 p.; 2 Plates: 30.00 x 25.00 inches and 25.00 x 25.50 inches","numberOfPages":"190","costCenters":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"links":[{"id":159580,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/wri004148.PNG"},{"id":328031,"rank":4,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/wri004148/pdf/wri00-4148.pdf","text":"Report","size":"9.16 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Report"},{"id":328032,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/wri004148/pdf/00-4148_pl1.pdf","text":"Plate 1","size":"1.11 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Plate 1"},{"id":328033,"rank":5,"type":{"id":17,"text":"Plate"},"url":"https://pubs.usgs.gov/wri/wri004148/pdf/00-4148_pl2.pdf","text":"Plate 2","size":"1.57 MB","linkFileType":{"id":1,"text":"pdf"},"description":"Plate 2"},{"id":2328,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri004148/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Texas","otherGeospatial":"Medina Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -99.05479431152344,\n 29.432421529604852\n ],\n [\n -98.84536743164061,\n 29.432421529604852\n ],\n [\n -98.84536743164061,\n 29.7375511168952\n ],\n [\n -99.05479431152344,\n 29.7375511168952\n ],\n [\n -99.05479431152344,\n 29.432421529604852\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b1ae4b07f02db6a8639","contributors":{"authors":[{"text":"Lambert, Rebecca B. 0000-0002-0611-1591 blambert@usgs.gov","orcid":"https://orcid.org/0000-0002-0611-1591","contributorId":1135,"corporation":false,"usgs":true,"family":"Lambert","given":"Rebecca","email":"blambert@usgs.gov","middleInitial":"B.","affiliations":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"preferred":true,"id":199398,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Grimm, Kenneth C.","contributorId":29483,"corporation":false,"usgs":true,"family":"Grimm","given":"Kenneth","email":"","middleInitial":"C.","affiliations":[],"preferred":false,"id":199399,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Lee, Roger W.","contributorId":105273,"corporation":false,"usgs":true,"family":"Lee","given":"Roger","email":"","middleInitial":"W.","affiliations":[],"preferred":false,"id":199400,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":29371,"text":"wri004071 - 2000 - Effects of hypothetical management scenarios on simulated water temperatures in the Tualatin River, Oregon","interactions":[],"lastModifiedDate":"2017-02-07T09:11:36","indexId":"wri004071","displayToPublicDate":"2001-06-01T00:00:00","publicationYear":"2000","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":"2000-4071","title":"Effects of hypothetical management scenarios on simulated water temperatures in the Tualatin River, Oregon","docAbstract":"In 1994, the U.S. Geological Survey (USGS) and the Unified Sewerage Agency of Washington County, Oregon (USA) began a cooperative study to better understand water-temperature variations in the Tualatin River and to assess mitigative water-management solutions. Continuous water-temperature data were collected at locations along the main stem of the river and along the major tributaries during the lowflow periods of 1994 and 1995. The 1994 data were used to develop and calibrate flow and water-temperature models characterizing conditions in the main stem. The models were used to simulate 10 hypotheti3 cal water-management scenarios, which would enable water managers to understand the effects of various human activities on water temperatures. Modeling results from the study are presented in Risley (1997); the data collected are presented in Risley and Doyle (1997). This report presents the water-temperature model simulation results of 16 additional hypothetical water-management scenarios using the 1994 and 1995 data. The additional modeling was funded by the USGS and the USA under a cooperative agreement. For a comprehensive description of the water-temperature models and their underlying assumptions, refer to Risley (1997).
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Portland, OR","doi":"10.3133/wri004071","collaboration":"Prepared in cooperation with Unified Sewerage Agency of Washington County, Oregon","usgsCitation":"Risley, J.C., 2000, Effects of hypothetical management scenarios on simulated water temperatures in the Tualatin River, Oregon: U.S. Geological Survey Water-Resources Investigations Report 2000-4071, ix, 110 p., https://doi.org/10.3133/wri004071.","productDescription":"ix, 110 p.","numberOfPages":"121","onlineOnly":"N","additionalOnlineFiles":"N","costCenters":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"links":[{"id":311169,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/wri004071.PNG"},{"id":311370,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/2000/4071/report.pdf","text":"Report","linkFileType":{"id":1,"text":"pdf"},"description":"Report"}],"country":"United States","state":"Oregon","otherGeospatial":"Tualatin River","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -91.1700439453125,\n 32.55144352864431\n ],\n [\n -91.1700439453125,\n 32.55144352864431\n ],\n [\n -91.16455078125,\n 32.55144352864431\n ],\n [\n -91.16455078125,\n 32.55144352864431\n ],\n [\n -91.1700439453125,\n 32.55144352864431\n ]\n ]\n ]\n }\n },\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -123.57421875,\n 45.00365115687189\n ],\n [\n -123.57421875,\n 45.85176048817254\n ],\n [\n -122.178955078125,\n 45.85176048817254\n ],\n [\n -122.178955078125,\n 45.00365115687189\n ],\n [\n -123.57421875,\n 45.00365115687189\n ]\n ]\n ]\n }\n }\n ]\n}","publicComments":"Supplement to Water-Resources Investigations Report 97-4071","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a29e4b07f02db611e79","contributors":{"authors":[{"text":"Risley, John C. 0000-0002-8206-5443 jrisley@usgs.gov","orcid":"https://orcid.org/0000-0002-8206-5443","contributorId":2698,"corporation":false,"usgs":true,"family":"Risley","given":"John","email":"jrisley@usgs.gov","middleInitial":"C.","affiliations":[{"id":518,"text":"Oregon Water Science Center","active":true,"usgs":true}],"preferred":true,"id":511067,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":30863,"text":"wri004082 - 2000 - Estimated effects on water quality of Lake Houston from interbasin transfer of water from the Trinity River, Texas","interactions":[],"lastModifiedDate":"2016-08-30T11:26:41","indexId":"wri004082","displayToPublicDate":"2001-06-01T00:00:00","publicationYear":"2000","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":"2000-4082","title":"Estimated effects on water quality of Lake Houston from interbasin transfer of water from the Trinity River, Texas","docAbstract":"The City of Houston is considering the transfer of water from the Trinity River to Lake Houston (on the San Jacinto River) to alleviate concerns about adequate water supplies for future water demands. The U.S. Geological Survey, in cooperation with the City of Houston, conducted a study to estimate the effects on the water quality of Lake Houston from the transfer of Trinity River water.
A water-quality model, CE–QUAL–W2, was used to simulate six water-quality properties and constituents for scenarios of interbasin transfer of Trinity River water. Three scenarios involved the transferred Trinity River water augmenting streamflow in the East Fork of Lake Houston, and three scenarios involved the transferred water replacing streamflow from the West Fork of the San Jacinto River.
The estimated effects on Lake Houston were determined by comparing volume-weighted daily mean water temperature, phosphorus, ammonia nitrogen, nitrite plus nitrate nitrogen, algal biomass, and dissolved oxygen simulated for each of the transfer scenarios to simulations for a base dataset. The effects of the interbasin transfer on Lake Houston do not appear to be detrimental to water temperature, ammonia nitrogen, or dissolved oxygen. Phosphorus and nitrite plus nitrate nitrogen showed fairly large changes when Trinity River water was transferred to replace West Fork San Jacinto River streamflow. Algal biomass showed large decreases when Trinity River water was transferred to augment East Fork Lake Houston streamflow and large increases when Trinity River water was transferred to replace West Fork San Jacinto River streamflow. Regardless of the scenario simulated, the model indicated that light was the limiting factor for algal biomass growth.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri004082","usgsCitation":"Liscum, F., and East, J., 2000, Estimated effects on water quality of Lake Houston from interbasin transfer of water from the Trinity River, Texas: U.S. Geological Survey Water-Resources Investigations Report 2000-4082, iv, 50 p., https://doi.org/10.3133/wri004082.","productDescription":"iv, 50 p.","costCenters":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"links":[{"id":160296,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/wri004082.PNG"},{"id":328035,"rank":3,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/wri00-4082/pdf/wri00-4082.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":2738,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri00-4082/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a81e4b07f02db64a1a0","contributors":{"authors":[{"text":"Liscum, Fred","contributorId":95463,"corporation":false,"usgs":true,"family":"Liscum","given":"Fred","email":"","affiliations":[],"preferred":false,"id":204230,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"East, Jeffery W. jweast@usgs.gov","contributorId":1683,"corporation":false,"usgs":true,"family":"East","given":"Jeffery W.","email":"jweast@usgs.gov","affiliations":[{"id":583,"text":"Texas Water Science Center","active":true,"usgs":true}],"preferred":true,"id":204229,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":30282,"text":"wri004019 - 2000 - Water-quality trend analysis and sampling design for the Souris River, Saskatchewan, North Dakota, and Manitoba","interactions":[],"lastModifiedDate":"2018-03-16T12:56:38","indexId":"wri004019","displayToPublicDate":"2001-06-01T00:00:00","publicationYear":"2000","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":"2000-4019","title":"Water-quality trend analysis and sampling design for the Souris River, Saskatchewan, North Dakota, and Manitoba","docAbstract":"The Souris River Basin is a 24,600-square-mile basin located in southeast Saskatchewan, north-central North Dakota, and southwest Manitoba. The Souris River Bilateral Water Quality Monitoring Group, formed in 1989 by the governments of Canada and the United States, is responsible for documenting trends in water quality in the Souris River and making recommendations for monitoring future water-quality conditions. This report presents results of a study conducted for the Bilateral Water Quality Monitoring Group by the U.S. Geological Survey, in cooperation with the North Dakota Department of Health, to analyze historic trends in water quality in the Souris River and to determine efficient sampling designs for monitoring future trends. U.S. Geological Survey and Environment Canada water-quality data collected during 1977-96 from four sites near the boundary crossings between Canada and the United States were included in the trend analysis.
A parametric time-series model was developed for detecting trends in historic constituent concentration data. The model can be applied to constituents that have at least 90 percent of observations above detection limits of the analyses, which, for the Souris River, includes most major ions and nutrients and many trace elements. The model can detect complex nonmonotonic trends in concentration in the presence of complex interannual and seasonal variability in daily discharge. A key feature of the model is its ability to handle highly irregular sampling intervals. For example, the intervals between concentration measurements may be be as short as 10 days to as long as several months, and the number of samples in any given year can range from zero to 36.
Results from the trend analysis for the Souris River indicated numerous trends in constituent concentration. The most significant trends at the two sites located near the upstream boundary crossing between Saskatchewan and North Dakota consisted of increases in concentrations of most major ions, dissolved boron, and dissolved arsenic during 1987-91 and decreases in concentrations of the same constituents during 1992-96. Significant trends at the two sites located near the downstream boundary crossing between North Dakota and Manitoba included increases in dissolved sodium, dissolved chloride, and total phosphorus during 1977-86, decreases in dissolved oxygen and dissolved boron and increases in total phosphorus and dissolved iron during 1987-91, and a decrease in total phosphorus during 1992-96.
The time-series model also was used to determine the sensitivity of various sampling designs for monitoring future water-quality trends in the Souris River. It was determined that at least two samples per year are required in each of three seasons--March through June, July through October, and November through February--to obtain reasonable sensitivity for detecting trends in each season. In addition, substantial improvements occurred in sensitivity for detecting trends by adding a third sample for major ions and trace elements in March through June, adding a third sample for nutrients in July through October, and adding a third sample for nutrients, trace elements, and dissolved oxygen in November through February.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri004019","usgsCitation":"Vecchia, A.V., 2000, Water-quality trend analysis and sampling design for the Souris River, Saskatchewan, North Dakota, and Manitoba: U.S. Geological Survey Water-Resources Investigations Report 2000-4019, iv, 77 p., https://doi.org/10.3133/wri004019.","productDescription":"iv, 77 p.","costCenters":[{"id":478,"text":"North Dakota Water Science Center","active":true,"usgs":true},{"id":34685,"text":"Dakota Water Science Center","active":true,"usgs":true}],"links":[{"id":159690,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":2444,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://nd.water.usgs.gov/pubs/wri/wri004019/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae5e4b07f02db68a4ba","contributors":{"authors":[{"text":"Vecchia, Aldo V. 0000-0002-2661-4401","orcid":"https://orcid.org/0000-0002-2661-4401","contributorId":41810,"corporation":false,"usgs":true,"family":"Vecchia","given":"Aldo","email":"","middleInitial":"V.","affiliations":[],"preferred":false,"id":202981,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":28976,"text":"wri004085 - 2000 - Method to identify wells that yield water that will be replaced by water from the Colorado River downstream from Laguna Dam in Arizona and California","interactions":[],"lastModifiedDate":"2014-06-12T07:09:47","indexId":"wri004085","displayToPublicDate":"2001-06-01T00:00:00","publicationYear":"2000","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":"2000-4085","title":"Method to identify wells that yield water that will be replaced by water from the Colorado River downstream from Laguna Dam in Arizona and California","docAbstract":"Accounting for the use of Colorado River water is required by the U.S. Supreme Court decree, 1964, \nArizona v. California. Water pumped from wells on the flood plain and from certain wells on alluvial \nslopes outside the flood plain is presumed to be river water and is accounted for as Colorado River water. \nThe accounting-surface method developed for the area upstream from Laguna Dam was modified for use \ndownstream from Laguna Dam to identify wells outside the flood plain of the lower Colorado River that \nyield water that will be replaced by water from the river. Use of the same method provides a uniform \ncriterion of identification for all users pumping water from wells by determining if the static water-level \nelevation in the well is above or below the elevation of the accounting surface. Wells that have a static \nwater-level elevation equal to or below the accounting surface are presumed to yield water that will be \nreplaced by water from the Colorado River. Wells that have a static water-level elevation above the \naccounting surface are presumed to yield river water stored above river level.
\nThe method is based on the concept of a river aquifer and an accounting surface within the river \naquifer. The river aquifer consists of permeable sediments and sedimentary rocks that are hydraulically \nconnected to the Colorado River so that water can move between the river and the aquifer in response to \nwithdrawal of water from the aquifer or differences in water-level elevations between the river and the \naquifer. The subsurface limit of the river aquifer is the nearly impermeable bedrock of the bottom and \nsides of the basins that underlie the Yuma area and adjacent valleys. The accounting surface represents \nthe elevation and slope of the unconfined static water table in the river aquifer outside the flood plain of \nthe Colorado River that would exist if the river were the only source of water to the river aquifer. The \naccounting surface was generated by using water-surface profiles of the Colorado River from Laguna \nDam to about the downstream limit of perennial flow at Morelos Dam. The accounting surface extends \noutward from the edges of the flood plain to the subsurface boundary of the river aquifer. Maps at a scale \nof 1:100,000 show the extent of the river aquifer and elevation of the accounting surface downstream from \nLaguna Dam in Arizona and California.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Tucson, AZ","doi":"10.3133/wri004085","collaboration":"Prepared in cooperation with the Bureau of Reclamation","usgsCitation":"Owen-Joyce, S.J., Wilson, R.P., Carpenter, M.C., and Fink, J.B., 2000, Method to identify wells that yield water that will be replaced by water from the Colorado River downstream from Laguna Dam in Arizona and California: U.S. Geological Survey Water-Resources Investigations Report 2000-4085, vi, 31 p., https://doi.org/10.3133/wri004085.","productDescription":"vi, 31 p.","numberOfPages":"41","costCenters":[],"links":[{"id":288388,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":288387,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/2000/4085/report.pdf"}],"scale":"100000","country":"United States","state":"Arizona;California","otherGeospatial":"Colorado River;Laguna Dam","geographicExtents":"{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\": \"Feature\", \"properties\": {}, \"geometry\": { \"type\": \"Polygon\", \"coordinates\": [ [ [ -115.0,32.5 ], [ -115.0,33.0 ], [ -114.0,33.0 ], [ -114.0,32.5 ], [ -115.0,32.5 ] ] ] } } ] }","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a51e4b07f02db629f68","contributors":{"authors":[{"text":"Owen-Joyce, Sandra J. 0000-0002-4400-5618 sjowen@usgs.gov","orcid":"https://orcid.org/0000-0002-4400-5618","contributorId":5215,"corporation":false,"usgs":true,"family":"Owen-Joyce","given":"Sandra","email":"sjowen@usgs.gov","middleInitial":"J.","affiliations":[],"preferred":true,"id":200718,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Wilson, Richard P.","contributorId":96655,"corporation":false,"usgs":true,"family":"Wilson","given":"Richard","email":"","middleInitial":"P.","affiliations":[],"preferred":false,"id":200720,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Carpenter, Michael C. mcarpent@usgs.gov","contributorId":3977,"corporation":false,"usgs":true,"family":"Carpenter","given":"Michael","email":"mcarpent@usgs.gov","middleInitial":"C.","affiliations":[],"preferred":true,"id":200717,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Fink, James B.","contributorId":11658,"corporation":false,"usgs":true,"family":"Fink","given":"James","email":"","middleInitial":"B.","affiliations":[],"preferred":false,"id":200719,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":27166,"text":"wri004110 - 2000 - Estimating the probability of elevated nitrate (NO2+NO3-N) concentrations in ground water in the Columbia Basin Ground Water Management Area, Washington","interactions":[],"lastModifiedDate":"2023-01-11T19:33:39.924408","indexId":"wri004110","displayToPublicDate":"2001-06-01T00:00:00","publicationYear":"2000","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":"2000-4110","displayTitle":"Estimating the probability of elevated nitrate (NO2+NO3-N) concentrations in ground water in the Columbia Basin Ground Water Management Area, Washington","title":"Estimating the probability of elevated nitrate (NO2+NO3-N) concentrations in ground water in the Columbia Basin Ground Water Management Area, Washington","docAbstract":"Logistic regression was used to relate anthropogenic (man-made) and natural factors to the occurrence of elevated concentrations of nitrite plus nitrate as nitrogen in ground water in the Columbia Basin Ground Water Management Area, eastern Washington. Variables that were analyzed included well depth, depth of well casing, ground-water recharge rates, presence of canals, fertilizer application amounts, soils, surficial geology, and land-use types. The variables that best explain the occurrence of nitrate concentrations above 3 milligrams per liter in wells were the amount of fertilizer applied annually within a 2-kilometer radius of a well and the depth of the well casing; the variables that best explain the occurrence of nitrate above 10 milligrams per liter included the amount of fertilizer applied annually within a 3-kilometer radius of a well, the depth of the well casing, and the mean soil hydrologic group, which is a measure of soil infiltration rate. Based on the relations between these variables and elevated nitrate concentrations, models were developed using logistic regression that predict the probability that ground water will exceed a nitrate concentration of either 3 milligrams per liter or 10 milligrams per liter. Maps were produced that illustrate the predicted probability that ground-water nitrate concentrations will exceed 3 milligrams per liter or 10 milligrams per liter for wells cased to 78 feet below land surface (median casing depth) and the predicted depth to which wells would need to be cased in order to have an 80-percent probability of drawing water with a nitrate concentration below either 3 milligrams per liter or 10 milligrams per liter. Maps showing the predicted probability for the occurrence of elevated nitrate concentrations indicate that the irrigated agricultural regions are most at risk. The predicted depths to which wells need to be cased in order to have an 80-percent chance of obtaining low nitrate ground water exceed 600 feet in the irrigated agricultural regions, whereas wells in dryland agricultural areas generally need a casing in excess of 400 feet. The predicted depth to which wells need to be cased to have at least an 80-percent chance to draw water with a nitrate concentration less than 10 milligrams per liter generally did not exceed 800 feet, with a 200-foot casing depth typical of the majority of the area.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri004110","usgsCitation":"Frans, L.M., 2000, Estimating the probability of elevated nitrate (NO2+NO3-N) concentrations in ground water in the Columbia Basin Ground Water Management Area, Washington: U.S. Geological Survey Water-Resources Investigations Report 2000-4110, iv, 26 p., https://doi.org/10.3133/wri004110.","productDescription":"iv, 26 p.","costCenters":[],"links":[{"id":158021,"rank":1,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":411729,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_33855.htm","linkFileType":{"id":5,"text":"html"}},{"id":2128,"rank":2,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri004110/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Washington","otherGeospatial":"Columbia Basin Ground Water Management Area","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"coordinates\": [\n [\n [\n -118,\n 48\n ],\n [\n -120,\n 48\n ],\n [\n -120,\n 46.26\n ],\n [\n -118,\n 46.26\n ],\n [\n -118,\n 48\n ]\n ]\n ],\n \"type\": \"Polygon\"\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0ae4b07f02db5fb984","contributors":{"authors":[{"text":"Frans, Lonna M. 0000-0002-3217-1862 lmfrans@usgs.gov","orcid":"https://orcid.org/0000-0002-3217-1862","contributorId":1493,"corporation":false,"usgs":true,"family":"Frans","given":"Lonna","email":"lmfrans@usgs.gov","middleInitial":"M.","affiliations":[{"id":622,"text":"Washington Water Science Center","active":true,"usgs":true}],"preferred":true,"id":197673,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":24829,"text":"ofr00390 - 2000 - Research, methodology, and applications of probabilistic seismic-hazard mapping of the Central and Eastern United States; minutes of a workshop on June 13-14, 2000, at Saint Louis University","interactions":[],"lastModifiedDate":"2017-03-07T11:02:51","indexId":"ofr00390","displayToPublicDate":"2001-06-01T00:00:00","publicationYear":"2000","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":"2000-390","title":"Research, methodology, and applications of probabilistic seismic-hazard mapping of the Central and Eastern United States; minutes of a workshop on June 13-14, 2000, at Saint Louis University","docAbstract":"The U.S. Geological Survey (USGS) is updating and revising its 1996 national seismic-hazard maps for release in 2001. Part of this process is the convening of four regional workshops with earth scientists and other users of the maps. The second of these workshops was sponsored by the USGS and the Mid-America Earthquake Center, and was hosted by Saint Louis University on June 13-14, 2000.
The workshop concentrated on the central and eastern U.S. (CEUS) east of the Rocky Mountains. The tasks of the workshop were to (1) evaluate new research findings that are relevant to seismic hazard mapping, (2) discuss modifications in the inputs and methodology used in the national maps, (3) discuss concerns by engineers and other users about the scientific input to the maps and the use of the hazard maps in building codes, and (4) identify needed research in the CEUS that can improve the seismic hazard maps and reduce their uncertainties.
These minutes summarize the workshop discussions. This is not a transcript; some individual remarks and short discussions of side issues and logistics were omitted. Named speakers were sent a draft of the minutes with a request for corrections of any errors in remarks attributed to them. Nine people returned corrections, amplifications, or approvals of their remarks as reported. The rest of this document consists of the meeting agenda, discussion summaries, and a list of the 60 attendees.
","language":"English","publisher":"U.S. Department of the Interior, U.S. Geological Survey,","publisherLocation":"Reston, VA","doi":"10.3133/ofr00390","issn":"0094-9140","usgsCitation":"Wheeler, R.L., and Perkins, D.M., 2000, Research, methodology, and applications of probabilistic seismic-hazard mapping of the Central and Eastern United States; minutes of a workshop on June 13-14, 2000, at Saint Louis University: U.S. Geological Survey Open-File Report 2000-390, 18 p., https://doi.org/10.3133/ofr00390.","productDescription":"18 p.","costCenters":[],"links":[{"id":157127,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0390/report-thumb.jpg"},{"id":53833,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0390/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":1848,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/ofr-00-0390/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a54e4b07f02db62c3b0","contributors":{"authors":[{"text":"Wheeler, Russell L. wheeler@usgs.gov","contributorId":858,"corporation":false,"usgs":true,"family":"Wheeler","given":"Russell","email":"wheeler@usgs.gov","middleInitial":"L.","affiliations":[],"preferred":false,"id":192640,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Perkins, David M. perkins@usgs.gov","contributorId":2114,"corporation":false,"usgs":true,"family":"Perkins","given":"David","email":"perkins@usgs.gov","middleInitial":"M.","affiliations":[{"id":301,"text":"Geologic Hazards Team","active":false,"usgs":true}],"preferred":true,"id":192641,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":27601,"text":"wri994274 - 2000 - Sustainable-yield estimation for the Sparta Aquifer in Union County, Arkansas","interactions":[],"lastModifiedDate":"2012-02-02T00:08:39","indexId":"wri994274","displayToPublicDate":"2001-05-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4274","title":"Sustainable-yield estimation for the Sparta Aquifer in Union County, Arkansas","docAbstract":"Options for utilizing alternative sources of water to alleviate overdraft from the Sparta aquifer and ensure that the aquifer can continue to provide abundant water of excellent quality for the future are being evaluated by water managers in Union County. Sustainable yield is a critical element in identifying and designing viable water supply alternatives. With sustainable yield defined and a knowledge of total water demand in an area, any unmet demand can be calculated. The ground-water flow model of the Sparta aquifer was used to estimate sustainable yield using an iterative approach.\r\nThe Sparta aquifer is a confined aquifer of regional importance that comprises a sequence of unconsolidated sand units that are contained within the Sparta Sand. Currently, the rate of withdrawal in some areas greatly exceeds the rate of recharge to the aquifer and considerable water-level declines have occurred. Ground-water flow model results indicate that the aquifer cannot continue to meet growing water-use demands indefinitely and that water levels will drop below the top of the primary producing sand unit in Union County (locally termed the El Dorado sand) by 2008 if current water-use trends continue. Declines of that magnitude will initiate dewatering of the El Dorado sand.\r\nThe sustainable yield of the aquifer was calculated by targeting a specified minimum acceptable water level within Union County and varying Union County pumpage within the model to achieve the target water level. Selection of the minimum target water level for sustainable-yield estimation was an important criterion for the modeling effort. In keeping with the State Critical Ground-Water Area designation criteria and the desire of water managers in Union County to improve aquifer conditions and bring the area out of the Critical Ground-Water Area designation, the approximate altitude of the top of the Sparta Sand in central Union County was used as the minimum water level target for estimation of sustainable yield in the county. A specific category of sustainable yield? stabilization yield, reflecting the amount of water that the aquifer can provide while maintaining current water levels? also was determined and provides information for short-term management. The top of the primary producing sand unit (the El Dorado sand) was used as the minimum water-level target for estimating stabilization yield in the county because current minimum water levels in central Union County are near the top of the El Dorado sand.\r\nModel results show that withdrawals from the Sparta aquifer in Union County must be reduced to 28 percent of 1997 values to achieve sustainable yield and maintain water levels at the top of the Sparta Sand if future pumpage outside of Union County is assumed to increase at the rate observed from 1985-1997. Results of the simulation define a very large current unmet demand and represent a substantial reduction in the county?s current dependence upon the aquifer. If future pumpage outside of Union County is assumed to increase at double the rate observed from 1985-1997, withdrawals from the Sparta aquifer in Union County must be reduced to 25 percent of 1997 values to achieve sustainable yield. Withdrawals from the Sparta aquifer in Union County must be reduced to about 88 to 91 percent (depending on pumpage growth outside of the county) of 1997 values to stabilize water levels at the top of the El Dorado sand. This result shows that 1997 rate of withdrawal in the county is considerably greater than the rate needed to halt the rapid decline in water levels.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey ;\r\nBranch of Information Services [distributor],","doi":"10.3133/wri994274","usgsCitation":"Hays, P.D., 2000, Sustainable-yield estimation for the Sparta Aquifer in Union County, Arkansas: U.S. Geological Survey Water-Resources Investigations Report 99-4274, iii, 17 p. :ill., maps ;28 cm., https://doi.org/10.3133/wri994274.","productDescription":"iii, 17 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":158874,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1999/4274/report-thumb.jpg"},{"id":56468,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1999/4274/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ae0e4b07f02db687f4c","contributors":{"authors":[{"text":"Hays, Phillip D. 0000-0001-5491-9272 pdhays@usgs.gov","orcid":"https://orcid.org/0000-0001-5491-9272","contributorId":4145,"corporation":false,"usgs":true,"family":"Hays","given":"Phillip","email":"pdhays@usgs.gov","middleInitial":"D.","affiliations":[{"id":24708,"text":"Lower Mississippi-Gulf Water Science Center","active":true,"usgs":true},{"id":369,"text":"Louisiana Water Science Center","active":true,"usgs":true},{"id":129,"text":"Arkansas Water Science Center","active":true,"usgs":true}],"preferred":true,"id":198395,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":38270,"text":"pp1626 - 2000 - Phanerozoic tectonic evolution of the Circum-North Pacific","interactions":[],"lastModifiedDate":"2012-02-02T00:10:00","indexId":"pp1626","displayToPublicDate":"2001-05-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":331,"text":"Professional Paper","code":"PP","onlineIssn":"2330-7102","printIssn":"1044-9612","active":true,"publicationSubtype":{"id":5}},"seriesNumber":"1626","title":"Phanerozoic tectonic evolution of the Circum-North Pacific","docAbstract":"The Phanerozoic tectonic evolution of the Circum-North Pacific is recorded mainly in the orogenic collages of the Circum-North Pacific mountain belts that separate the North Pacific from the eastern part of the North Asian Craton and the western part of the North American Craton. These collages consist of tectonostratigraphic terranes that are composed of fragments of igneous arcs, accretionary-wedge and subduction-zone complexes, passive continental margins, and cratons; they are overlapped by continental-margin-arc and sedimentary-basin assemblages. The geologic history of the terranes and overlap assemblages is highly complex because of postaccretionary dismemberment and translation during strike-slip faulting that occurred subparallel to continental margins.We analyze the complex tectonics of this region by the following steps. (1) We assign tectonic environments for the orogenic collages from regional compilation and synthesis of stratigraphic and faunal data. The types of tectonic environments include cratonal, passive continental margin, metamorphosed continental margin, continental-margin arc, island arc, oceanic crust, seamount, ophiolite, accretionary wedge, subduction zone, turbidite basin, and metamorphic. (2) We make correlations between terranes. (3) We group coeval terranes into a single tectonic origin, for example, a single island arc or subduction zone. (4) We group igneous-arc and subduction- zone terranes, which are interpreted as being tectonically linked, into coeval, curvilinear arc/subduction-zone complexes. (5) We interpret the original positions of terranes, using geologic, faunal, and paleomagnetic data. (6) We construct the paths of tectonic migration.\r\n\r\nSix processes overlapping in time were responsible for most of the complexities of the collage of terranes and overlap assemblages around the Circum-North Pacific, as follows. (1) During the Late Proterozoic, Late Devonian, and Early Carboniferous, major periods of rifting occurred along the ancestral margins of present-day Northeast Asia and northwestern North America. The rifting resulted in the fragmentation of each continent and the formation of cratonal and passive continental-margin terranes that eventually migrated and accreted to other sites along the evolving margins of the original or adjacent continents. (2) From about the Late Triassic through the mid-Cretaceous, a succession of island arcs and tectonically paired subduction zones formed near the continental margins. (3) From about mainly the mid-Cretaceous through the present, a succession of igneous arcs and tectonically paired subduction zones formed along the continental margins. (4) From about the Jurassic to the present, oblique convergence and rotations caused orogenparallel sinistral and then dextral displacements within the upper-plate margins of cratons that have become Northeast Asia and North America. The oblique convergences and rotations resulted in the fragmentation, displacement, and duplication of formerly more nearly continuous arcs, subduction zones, and passive continental margins. These fragments were subsequently accreted along the expanding continental margins. (5) From the Early Jurassic through Tertiary, movement of the upper continental plates toward subduction zones resulted in strong plate coupling and accretion of the former island arcs and subduction zones to the continental margins. Accretions were accompanied and followed by crustal thickening, anatexis, metamorphism, and uplift. The accretions resulted in substantial growth of the North Asian and North American Continents. (6) During the middle and late Cenozoic, oblique to orthogonal convergence of the Pacifi c plate with present-day Alaska and Northeast Asia resulted in formation of the modern-day ring of volcanoes around the Circum-North Pacific. Oblique convergence between the Pacific plate and Alaska also resulted in major dextral-slip faulting in interior and southern Alaska and along the western p","language":"ENGLISH","doi":"10.3133/pp1626","usgsCitation":"Nokleberg, W.J., Parfenov, L.M., Monger, J.W., Norton, I.O., Khanchuk, A.I., Stone, D., Scotese, C.R., Scholl, D.W., and Fujita, K., 2000, Phanerozoic tectonic evolution of the Circum-North Pacific: U.S. Geological Survey Professional Paper 1626, 122 p., https://doi.org/10.3133/pp1626.","productDescription":"122 p.","costCenters":[],"links":[{"id":162629,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":7811,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/pp/2000/1626/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b15e4b07f02db6a486e","contributors":{"authors":[{"text":"Nokleberg, Warren J. 0000-0002-1574-8869 wnokleberg@usgs.gov","orcid":"https://orcid.org/0000-0002-1574-8869","contributorId":2077,"corporation":false,"usgs":true,"family":"Nokleberg","given":"Warren","email":"wnokleberg@usgs.gov","middleInitial":"J.","affiliations":[{"id":312,"text":"Geology, Minerals, Energy, and Geophysics Science Center","active":true,"usgs":true}],"preferred":true,"id":219467,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Parfenov, Leonid M.","contributorId":59112,"corporation":false,"usgs":true,"family":"Parfenov","given":"Leonid","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":219472,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Monger, James W.H.","contributorId":53900,"corporation":false,"usgs":true,"family":"Monger","given":"James","email":"","middleInitial":"W.H.","affiliations":[],"preferred":false,"id":219471,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Norton, Ian O.","contributorId":82575,"corporation":false,"usgs":true,"family":"Norton","given":"Ian","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":219475,"contributorType":{"id":1,"text":"Authors"},"rank":4},{"text":"Khanchuk, Alexander I.","contributorId":19585,"corporation":false,"usgs":true,"family":"Khanchuk","given":"Alexander","email":"","middleInitial":"I.","affiliations":[],"preferred":false,"id":219470,"contributorType":{"id":1,"text":"Authors"},"rank":5},{"text":"Stone, David B.","contributorId":65324,"corporation":false,"usgs":true,"family":"Stone","given":"David B.","affiliations":[],"preferred":false,"id":219473,"contributorType":{"id":1,"text":"Authors"},"rank":6},{"text":"Scotese, Christopher R.","contributorId":66357,"corporation":false,"usgs":true,"family":"Scotese","given":"Christopher","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":219474,"contributorType":{"id":1,"text":"Authors"},"rank":7},{"text":"Scholl, David W. 0000-0001-6500-6962 dscholl@usgs.gov","orcid":"https://orcid.org/0000-0001-6500-6962","contributorId":3738,"corporation":false,"usgs":true,"family":"Scholl","given":"David","email":"dscholl@usgs.gov","middleInitial":"W.","affiliations":[{"id":186,"text":"Coastal and Marine Geology Program","active":true,"usgs":true},{"id":520,"text":"Pacific Coastal and Marine Science Center","active":true,"usgs":true}],"preferred":true,"id":219468,"contributorType":{"id":1,"text":"Authors"},"rank":8},{"text":"Fujita, Kazuya","contributorId":15654,"corporation":false,"usgs":true,"family":"Fujita","given":"Kazuya","email":"","affiliations":[],"preferred":false,"id":219469,"contributorType":{"id":1,"text":"Authors"},"rank":9}]}} ,{"id":29813,"text":"wri20004015 - 2000 - Aquifer-system compaction and land subsidence: Measurements, analyses, and simulations – The Holly Site, Edwards Air Force Base, Antelope Valley, California","interactions":[],"lastModifiedDate":"2022-01-07T19:28:44.362115","indexId":"wri20004015","displayToPublicDate":"2001-05-01T00:00:00","publicationYear":"2000","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":"2000-4015","title":"Aquifer-system compaction and land subsidence: Measurements, analyses, and simulations – The Holly Site, Edwards Air Force Base, Antelope Valley, California","docAbstract":"Land subsidence resulting from ground-water-level declines has long been recognized as a problem in Antelope Valley, California. At Edwards Air Force Base (EAFB), ground-water extractions have caused more than 150 feet of water-level decline, resulting in nearly 4 feet of subsidence. Differential land subsidence has caused sinklike depressions and earth fissures and has accelerated erosion of the playa lakebed surface of Rogers Lake at EAFB, adversely affecting the runways on the lakebed which are used for landing aircraft such as the space shuttles. Since 1990, about 0.4 foot of aquifer-system compaction has been measured at a deep (840 feet) borehole extensometer (Holly site) at EAFB. More than 7 years of paired ground-water-level and aquifer-system compaction measurements made at the Holly site were analyzed for this study. Annually, seasonal water-level fluctuations correspond to steplike variations in aquifer-system compaction; summer water-level drawdowns are associated with larger rates of compaction, and winter water-level recoveries are associated with smaller rates of compaction. The absence of aquifer-system expansion during recovery is consistent with the delayed drainage and resultant delayed, or residual, compaction of thick aquitards. A numerical one-dimensional MODFLOW model of aquitard drainage was used to refine estimates of aquifer-system hydraulic parameters that control compaction and to predict potential future compaction at the Holly site. The analyses and simulations of aquifer-system compaction are based on established theories of aquitard drainage. Historical ground-water-level and land-subsidence data collected near the Holly site were used to constrain simulations of aquifer-system compaction and land subsidence at the site for the period 1908-90, and ground-water-level and aquifer- system compaction measurements collected at the Holly site were used to constrain the model for the period 1990-97. Model results indicate that two thick aquitards, which total 129 feet or about half the aggregate thickness of all the aquitards penetrated by the Holly boreholes, account for most (greater than 99 percent) of the compaction measured at the Holly site during the period 1990-97. The results of three scenarios of future water-level changes indicate that these two thick aquitards account for most of the future compaction. The results also indicate that if water levels decline to about 30 feet below the 1997 water levels an additional 1.7 feet of compaction may occur during the next 30 years. If water levels remain at 1997 levels, the model predicts that only 0.8 foot of compaction may occur during the same period, and even if water levels recover to about 30 feet above 1997 water levels, another 0.5 foot of compaction may occur in the next 30 years. In addition, only a portion of the compaction that ultimately will occur likely will occur within the next 30 years; therefore, the residual compaction and associated land subsidence attributed to slowly equilibrating aquitards is important to consider in the long-term management of land and water resources at EAFB.
","language":"English","publisher":"U. S. Geological Survey","publisherLocation":"Reston, VA","doi":"10.3133/wri20004015","usgsCitation":"Sneed, M., and Galloway, D.L., 2000, Aquifer-system compaction and land subsidence: Measurements, analyses, and simulations – The Holly Site, Edwards Air Force Base, Antelope Valley, California: U.S. Geological Survey Water-Resources Investigations Report 2000-4015, vii, 65 p., https://doi.org/10.3133/wri20004015.","productDescription":"vii, 65 p.","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":35860,"text":"Ohio-Kentucky-Indiana Water Science Center","active":true,"usgs":true}],"links":[{"id":159077,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":394045,"rank":3,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_26214.htm"},{"id":11192,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/wri/2000/wri004015/","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"California","otherGeospatial":"Antelope Valley","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -118.19503784179688,\n 35.16819542676796\n ],\n [\n -118.90228271484374,\n 34.84536693184099\n ],\n [\n -118.91189575195312,\n 34.78222760653013\n ],\n [\n -117.45620727539062,\n 34.30260622622907\n ],\n [\n -117.54959106445312,\n 35.163704834815874\n ],\n [\n -118.19503784179688,\n 35.16819542676796\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4ac5e4b07f02db679f12","contributors":{"authors":[{"text":"Sneed, Michelle 0000-0002-8180-382X micsneed@usgs.gov","orcid":"https://orcid.org/0000-0002-8180-382X","contributorId":155,"corporation":false,"usgs":true,"family":"Sneed","given":"Michelle","email":"micsneed@usgs.gov","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":202172,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Galloway, Devin L. 0000-0003-0904-5355 dlgallow@usgs.gov","orcid":"https://orcid.org/0000-0003-0904-5355","contributorId":679,"corporation":false,"usgs":true,"family":"Galloway","given":"Devin","email":"dlgallow@usgs.gov","middleInitial":"L.","affiliations":[{"id":5058,"text":"Office of the Chief Scientist for Water","active":true,"usgs":true},{"id":35860,"text":"Ohio-Kentucky-Indiana Water Science Center","active":true,"usgs":true},{"id":509,"text":"Office of the Associate Director for Water","active":true,"usgs":true},{"id":37277,"text":"WMA - Earth System Processes Division","active":true,"usgs":true},{"id":5078,"text":"Southwest Regional Director's Office","active":true,"usgs":true}],"preferred":true,"id":202173,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":30854,"text":"wri004002 - 2000 - Metals transport in the Sacramento River, California, 1996-1997; Volume 2: Interpretation of metal loads","interactions":[],"lastModifiedDate":"2020-03-23T06:58:23","indexId":"wri004002","displayToPublicDate":"2001-05-01T00:00:00","publicationYear":"2000","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":"2000-4002","title":"Metals transport in the Sacramento River, California, 1996-1997; Volume 2: Interpretation of metal loads","docAbstract":"Metals transport in the Sacramento River, northern California, from July 1996 to June 1997 was evaluated in terms of metal loads from samples of water and suspended colloids that were collected on up to six occasions at 13 sites in the Sacramento River Basin. Four of the sampling periods (July, September, and November 1996; and May-June 1997) took place during relatively low-flow conditions and two sampling periods (December 1996 and January 1997) took place during high-flow and flooding conditions, respectively. This study focused primarily on loads of cadmium, copper, lead, and zinc, with secondary emphasis on loads of aluminum, iron, and mercury.
Trace metals in acid mine drainage from abandoned and inactive base-metal mines, in the East and West Shasta mining districts, enter the Sacramento River system in predominantly dissolved form into both Shasta Lake and Keswick Reservoir. The proportion of trace metals that was dissolved (as opposed to colloidal) in samples collected at Shasta and Keswick dams decreased in the order zinc ≈ cadmium > copper > lead. At four sampling sites on the Sacramento River--71, 256, 360, and 412 kilometers downstream of Keswick Dam--trace-metal loads were predominantly colloidal during both high- and low-flow conditions. The proportion of total cadmium, copper, lead, and zinc loads transported to San Francisco Bay and the Sacramento-San Joaquin Delta estuary (referred to as the Bay-Delta) that is associated with mineralized areas was estimated by dividing loads at Keswick Dam by loads 412 kilometers downstream at Freeport and the Yolo Bypass. During moderately high flows in December 1996, mineralization-related total (dissolved + colloidal) trace-metal loads to the Bay-Delta (as a percentage of total loads measured downstream) were cadmium, 87 percent; copper, 35 percent; lead, 10 percent; and zinc, 51 percent. During flood conditions in January 1997 loads were cadmium, 22 percent; copper, 11 percent; lead, 2 percent; and zinc, 15 percent. During irrigation drainage season from rice fields (May-June 1997) loads were cadmium, 53 percent; copper, 42 percent; lead, 20 percent; and zinc, 75 percent. These estimates must be qualified by the following factors: (1) metal loads at Colusa in December 1996 and at Verona in May-June 1997 generally exceeded those determined at Freeport during those sampling periods. Therefore, the above percentages represent maximum estimates of the apparent total proportion of metals from mineralized areas upstream of Keswick Dam; and (2) for logistics reasons, the Sacramento River was sampled at Tower Bridge instead of at Freeport during January 1997.
Available data suggest that trace metal loads from agricultural drainage may be significant during certain flow conditions in areas where metals such as copper and zinc are added as agricultural amendments. Copper loads for sampling periods in July and September 1996 and in May-June 1997 show increases of dissolved and colloidal copper and in colloidal zinc between Colusa and Verona, the reach of the Sacramento River along which the Colusa Basin Drain, the Sacramento Slough, and other agricultural return flows are tributaries. Monthly sampling of these two agricultural drains by the USGS National Water-Quality Assessment Program shows seasonal variations in metal concentrations, reaching maximum concentrations of 4 to 6 micrograms per liter in \"dissolved\" (0.45-micrometer filtrate) copper concentrations in May 1996, December 1996, and June 1997. The total (dissolved plus colloidal) load of copper from the Colusa Basin Drain in June 1997 was 18 kilograms per day, whereas the copper load in Spring Creek, which drains the inactive mines on Iron Mountain, was 20 kilograms per day during the same sampling period. For comparison, during the January 1997 flood, the copper load in Spring Creek was about 1,100 kilograms per day and the copper load in the Yolo Bypass was about 7,300 kilograms per day. The data clearly indicate that most copper and zinc loads during the January 1997 flood entered the Sacramento River upstream of Colusa, and upstream of the influence of the most intense agricultural drainage return flows in the Sacramento River watershed.
This study has demonstrated that some trace metals of environmental significance (cadmium, copper, and zinc) in the Sacramento River are transported largely in dissolved form at upstream sites (below Shasta Dam, below Keswick Dam, and at Bend Bridge) proximal to the mineralized areas of the West Shasta and East Shasta mining districts. In contrast, these trace metals are transported largely in colloidal form at downstream sites (Colusa, Verona, Freeport, and Yolo Bypass). Aluminum, iron, and lead were observed to be transported predominantly in the colloidal phase at all mainstem Sacramento River sampling sites during all sampling periods in this study. Despite continuous water treatment, which has removed 85 to 90 percent of the cadmium, copper, and zinc from the mine drainage at Iron Mountain, Spring Creek remains a significant source of these metals to the Sacramento River system.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Sacramento, CA","doi":"10.3133/wri004002","collaboration":"Prepared in cooperation with the Sacramento Regional County Sanitation District, California State Water Resources Control Board, U.S. Environmental Protection Agency, and U.S. Department of Commerce, National Marine Fisheries Service","usgsCitation":"2000, Metals transport in the Sacramento River, California, 1996-1997; Volume 2: Interpretation of metal loads: U.S. Geological Survey Water-Resources Investigations Report 2000-4002, xi, 106 p., https://doi.org/10.3133/wri004002.","productDescription":"xi, 106 p.","numberOfPages":"118","costCenters":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true},{"id":589,"text":"Toxic Substances Hydrology 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\"}}]}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4fe4b07f02db62877e","contributors":{"editors":[{"text":"Alpers, Charles N. 0000-0001-6945-7365 cnalpers@usgs.gov","orcid":"https://orcid.org/0000-0001-6945-7365","contributorId":411,"corporation":false,"usgs":true,"family":"Alpers","given":"Charles","email":"cnalpers@usgs.gov","middleInitial":"N.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":728626,"contributorType":{"id":2,"text":"Editors"},"rank":1},{"text":"Antweiler, Ronald C. 0000-0001-5652-6034 antweil@usgs.gov","orcid":"https://orcid.org/0000-0001-5652-6034","contributorId":1481,"corporation":false,"usgs":true,"family":"Antweiler","given":"Ronald","email":"antweil@usgs.gov","middleInitial":"C.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":728627,"contributorType":{"id":2,"text":"Editors"},"rank":2},{"text":"Taylor, Howard E. hetaylor@usgs.gov","contributorId":1551,"corporation":false,"usgs":true,"family":"Taylor","given":"Howard","email":"hetaylor@usgs.gov","middleInitial":"E.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":728628,"contributorType":{"id":2,"text":"Editors"},"rank":3},{"text":"Dileanis, Peter D. dileanis@usgs.gov","contributorId":71541,"corporation":false,"usgs":true,"family":"Dileanis","given":"Peter","email":"dileanis@usgs.gov","middleInitial":"D.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":false,"id":728629,"contributorType":{"id":2,"text":"Editors"},"rank":4},{"text":"Domagalski, Joseph L. 0000-0002-6032-757X joed@usgs.gov","orcid":"https://orcid.org/0000-0002-6032-757X","contributorId":1330,"corporation":false,"usgs":true,"family":"Domagalski","given":"Joseph","email":"joed@usgs.gov","middleInitial":"L.","affiliations":[{"id":154,"text":"California Water Science Center","active":true,"usgs":true}],"preferred":true,"id":728630,"contributorType":{"id":2,"text":"Editors"},"rank":5}]}} ,{"id":26090,"text":"wri004003 - 2000 - Electromagnetic surveys to detect clay-rich sediment in the Rio Grande inner valley, Albuquerque area, New Mexico","interactions":[],"lastModifiedDate":"2012-02-02T00:08:34","indexId":"wri004003","displayToPublicDate":"2001-05-01T00:00:00","publicationYear":"2000","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":"2000-4003","title":"Electromagnetic surveys to detect clay-rich sediment in the Rio Grande inner valley, Albuquerque area, New Mexico","docAbstract":"Information on the presence of clay-rich layers in the inner-valley \r\nalluvium is essential for quantifying the amount of water transmitted \r\nbetween the Rio Grande and the Santa Fe Group aquifer system. This \r\nreport describes a study that used electromagnetic surveys to provide \r\nthis information. In the first phase of the study, electromagnetic \r\nsoundings were made using time-domain and frequency-domain electro-\r\nmagnetic methods. On the basis of these initial results, the time- \r\ndomain method was judged ineffective because of cultural noise in the \r\nstudy area, so subsequent surveys were made using the frequency-domain\r\nmethod. For the second phase of the study, 31 frequency-domain\r\nelectromagnetic surveys were conducted along the inner valley and\r\nparallel to the Rio Grande in the Albuquerque area in the spring and\r\nsummer of 1997 to determine the presence of hydrologically significant\r\nclay-rich layers buried in the inner-valley alluvium. For this report,\r\nthe 31 survey sections were combined into 10 composite sections for\r\nease of interpretation.\r\n\r\nTerrain-conductivity data from the surveys were modeled \r\nusing interpretation software to produce geoelectric cross sections \r\nalong the survey lines. This modeling used lithologic logs from \r\ntwo wells installed near the survey lines: the Bosque South and \r\nRio Bravo 5 wells. Because of cultural interference, location of \r\nthe wells and soundings, complex stratigraphy, and difficulty \r\ninterpreting lithology, such interpretation was inconclusive. \r\nInstead, a decision process based on modeling results was developed \r\nusing vertical and horizontal dipole 40-meter intercoil spacing \r\nterrain-conductivity values. Values larger than or equal to 20 \r\nmillisiemens per meter were interpreted to contain a \r\nhydrologically significant thickness of clay-rich sediment. \r\nThus, clay-rich sediment was interpreted to underlie seven \r\nsegments of the 10 composited survey lines, totaling at least \r\n2,660 meters of the Rio Grande inner valley. The longest of these \r\nclay-rich segments is a 940-meter reach between Bridge and Rio Bravo \r\nBoulevards.","language":"ENGLISH","publisher":"U.S. Department of the Interior, U.S. Geological Survey ;\r\nBranch of Information Services [distributor],","doi":"10.3133/wri004003","usgsCitation":"Bartolino, J.R., and Sterling, J.M., 2000, Electromagnetic surveys to detect clay-rich sediment in the Rio Grande inner valley, Albuquerque area, New Mexico: U.S. Geological Survey Water-Resources Investigations Report 2000-4003, iv, 45 p. :ill. (some col.), maps (some col.) ; 28 cm., https://doi.org/10.3133/wri004003.","productDescription":"iv, 45 p. :ill. (some col.), maps (some col.) ; 28 cm.","costCenters":[],"links":[{"id":95582,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/2000/4003/report.pdf","size":"6230","linkFileType":{"id":1,"text":"pdf"}},{"id":158273,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/2000/4003/report-thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4abbe4b07f02db672571","contributors":{"authors":[{"text":"Bartolino, James R. 0000-0002-2166-7803 jrbartol@usgs.gov","orcid":"https://orcid.org/0000-0002-2166-7803","contributorId":2548,"corporation":false,"usgs":true,"family":"Bartolino","given":"James","email":"jrbartol@usgs.gov","middleInitial":"R.","affiliations":[{"id":343,"text":"Idaho Water Science Center","active":true,"usgs":true}],"preferred":true,"id":195780,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Sterling, Joseph M.","contributorId":26331,"corporation":false,"usgs":true,"family":"Sterling","given":"Joseph","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":195781,"contributorType":{"id":1,"text":"Authors"},"rank":2}]}} ,{"id":27156,"text":"wri004018 - 2000 - Microbiological monitoring for the U.S. Geological Survey National Water-Quality Assessment Program","interactions":[],"lastModifiedDate":"2019-04-22T09:26:40","indexId":"wri004018","displayToPublicDate":"2001-05-01T00:00:00","publicationYear":"2000","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":"2000-4018","displayTitle":"Microbiological Monitoring for the U.S. Geological Survey National Water-Quality Assessment Program","title":"Microbiological monitoring for the U.S. Geological Survey National Water-Quality Assessment Program","docAbstract":"Data to characterize the microbiological quality of the Nation's fresh, marine, and estuarine waters are usually collected for local purposes, most often to judge compliance with standards for protection of public health in swimmable or drinkable waters. Methods and procedures vary with the objectives and practices of the parties collecting data and are continuously being developed or modified. Therefore, it is difficult to provide a nationally consistent picture of the microbial quality of the Nation's waters.
Study objectives and guidelines for a national microbiological monitoring program are outlined in this report, using the framework of the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) program. A national program is designed to provide long-term data on the presence of microbiological pathogens and indicators in ground water and surface water to support effective water policy and management. Three major groups of waterborne pathogens affect the public health acceptability of waters in the United States—bacteria, protozoa, and viruses. Microbiological monitoring in NAWQA would be designed to assess the occurrence, distribution, and trends of pathogenic organisms and indicators in surface waters and ground waters; relate the patterns discerned to factors that help explain them; and improve our understanding of the processes that control microbiological water quality.
","language":"English","publisher":"U.S. Department of the Interior, U.S. Geological Survey ;\r\nBranch of Information Services [distributor],","publisherLocation":"Reston, VA","doi":"10.3133/wri004018","usgsCitation":"Francy, D.S., Myers, D.N., and Helsel, D., 2000, Microbiological monitoring for the U.S. Geological Survey National Water-Quality Assessment Program: U.S. Geological Survey Water-Resources Investigations Report 2000-4018, vi, 31 p. ;28 cm., https://doi.org/10.3133/wri004018.","productDescription":"vi, 31 p. ;28 cm.","costCenters":[],"links":[{"id":2127,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/2000/4018/wri20004018.pdf","text":"Report","size":"666 KB","linkFileType":{"id":1,"text":"pdf"},"description":"WRI 2000-4018"},{"id":158002,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/2000/4018/coverthb.jpg"}],"contact":"Director, Ohio Water Science Center
U.S. Geological Survey
6460 Busch Blvd.
Columbus, OH 43229
No abstract available.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/wri994281","usgsCitation":"Crain, A.S., Shipp, A.A., Mesko, T.O., and Jarrett, G., 2000, Modeling hydrodynamics and water quality in Herrington Lake, Kentucky: U.S. Geological Survey Water-Resources Investigations Report 99-4281, vi, 84 p., https://doi.org/10.3133/wri994281.","productDescription":"vi, 84 p.","costCenters":[{"id":354,"text":"Kentucky Water Science Center","active":true,"usgs":true},{"id":49157,"text":"Rocky Mountain Regional Office","active":true,"usgs":true}],"links":[{"id":54441,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/wri/1999/4281/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":118770,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/wri/1999/4281/report-thumb.jpg"}],"country":"United States","state":"Kentucky","otherGeospatial":"Herrington Lake","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -84.77737426757812,\n 37.621845878167704\n ],\n [\n -84.60983276367186,\n 37.621845878167704\n ],\n [\n -84.60983276367186,\n 37.808698976006795\n ],\n [\n -84.77737426757812,\n 37.808698976006795\n ],\n [\n -84.77737426757812,\n 37.621845878167704\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4b05e4b07f02db699929","contributors":{"authors":[{"text":"Crain, Angela S. 0000-0003-0969-6238 ascrain@usgs.gov","orcid":"https://orcid.org/0000-0003-0969-6238","contributorId":3090,"corporation":false,"usgs":true,"family":"Crain","given":"Angela","email":"ascrain@usgs.gov","middleInitial":"S.","affiliations":[{"id":27231,"text":"Indiana-Kentucky Water Science Center","active":true,"usgs":true},{"id":354,"text":"Kentucky Water Science Center","active":true,"usgs":true}],"preferred":true,"id":194596,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Shipp, Allison A. 0000-0003-2927-8893 aashipp@usgs.gov","orcid":"https://orcid.org/0000-0003-2927-8893","contributorId":338,"corporation":false,"usgs":true,"family":"Shipp","given":"Allison","email":"aashipp@usgs.gov","middleInitial":"A.","affiliations":[{"id":49157,"text":"Rocky Mountain Regional Office","active":true,"usgs":true}],"preferred":true,"id":194597,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Mesko, Thomas O.","contributorId":81498,"corporation":false,"usgs":true,"family":"Mesko","given":"Thomas","email":"","middleInitial":"O.","affiliations":[],"preferred":false,"id":194598,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Jarrett, G. L.","contributorId":83963,"corporation":false,"usgs":true,"family":"Jarrett","given":"G. L.","affiliations":[],"preferred":false,"id":194599,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":30157,"text":"wri994268 - 2000 - Flow and salinity characteristics of the upper Suwannee River Estuary, Florida","interactions":[],"lastModifiedDate":"2012-02-02T00:08:50","indexId":"wri994268","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2000","noYear":false,"publicationType":{"id":18,"text":"Report"},"publicationSubtype":{"id":5,"text":"USGS Numbered Series"},"seriesTitle":{"id":342,"text":"Water-Resources Investigations Report","code":"WRI","active":false,"publicationSubtype":{"id":5}},"seriesNumber":"99-4268","title":"Flow and salinity characteristics of the upper Suwannee River Estuary, Florida","docAbstract":"Continuous stage and salinity data were recorded from August 1995 to December 1997 at four gages located in the upper Suwannee River Estuary. Continuous velocity data were recorded at two of the four gages and continuous discharge data were computed for these two gages. Additional salinity data were collected at 15 monitoring sites from November 1992 to October 1997. Wind-speed data collected at Cedar Key, Florida, during the study period were utilized in the regression analysis. Correlations were developed to describe the longitudinal extent of the saltwater/freshwater interface (defined as 0.5 parts per thousand (ppt) salinity) and salinity distribution in the upper Suwannee River Estuary. On East Pass, the median of difference between daily maximum and daily minimum stage ranged from 2.92 feet for a gage at river mile 3.8 to 3.33 feet for a gage at river mile 1.2. Velocities tended to be unidirectional with some instances of bilateral flow. Reversal in flow direction was common and coincided with rising tides. Monthly mean discharges for the Suwannee River near Wilcox, Florida, during the study period typically were lower than the average for the period of record (1931.97). Discharge near Wilcox averaged 4,000 cubic feet per second (ft3/s) lower than the long-term average from June to September 1996. An El Ni?o event induced precipitation that was responsible for higher than average monthly mean discharge measured near Wilcox during November and December 1997. The maximum observed salinity concentrations for the study period ranged from 28.20 ppt at river mile 3.8 to 31.00 ppt at river mile 1.9. Median daily fluctuations of salinity at river miles 3.8 and 1.2 were 0.12 and 11.31 ppt, respectively. The maximum daily upstream extent of the saltwater/freshwater interface was at or upstream from river mile 4.0 for about 50 percent of the study period. The interface was at or upstream from river mile 3.8 and river mile 2.8 40 and 57 percent of the time. The interface was downstream from river mile 1.2 and river mile 1.9 11 and 21 percent of the time, respectively. The median daily maximum salinity for the four gages ranged from 0.22 ppt at river mile 3.8 to 11.50 ppt at river mile 1.2. Multiple linear-regression models were developed to determine the isohaline location for 0.5, 2, 5, 10, 15, and 20 ppt salinity, and to predict the maximum daily salinity concentrations at gages as a function of stage, river discharge, and wind. The salinity at a location was inversely proportional to the daily mean discharge at the Suwannee River near Wilcox. Under extreme low-flow conditions (3,500 ft3/s), the regression models predicted that the interface would occur at river mile 7.2, upstream from the Gopher River confluence with the Suwannee River. Wind speed did not have a substantial influence on model predictions. The period of record for the Suwannee River at Wilcox was applied to appropriate regression models to produce a synthetic record of historical salinity distributions. Two withdrawal scenarios, a 10-percent diversion and a 1,000 ft3/s diversion, were evaluated relative to high-, medium-, and low-flow conditions and compared to actual salinity distributions. The 10-percent and 1,000 ft3/s withdrawals scenarios resulted in the isohaline of 0.5 ppt migrating 0.6 and 1.58 miles upstream from the actual isohaline location for a low-flow condition of 4,500 ft3/s, and migrating 0.14 and 0.65 miles upstream from the actual isohaline location for a high-flow conditions of 20,300 ft3/s for Wadley Pass.","language":"ENGLISH","publisher":"U.S. Department of the Interior, U.S. Geological Survey ;\r\nBranch of Information Services [distributor].,","doi":"10.3133/wri994268","usgsCitation":"Tillis, G.M., 2000, Flow and salinity characteristics of the upper Suwannee River Estuary, Florida: U.S. Geological Survey Water-Resources Investigations Report 99-4268, vi, 40 p. : b ill. (some col.), col. maps, charts ;28 cm., https://doi.org/10.3133/wri994268.","productDescription":"vi, 40 p. : b ill. (some col.), col. maps, charts ;28 cm.","costCenters":[],"links":[{"id":159261,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":2398,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.water.usgs.gov/wri994268","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4883e4b07f02db517762","contributors":{"authors":[{"text":"Tillis, Gina M.","contributorId":92302,"corporation":false,"usgs":true,"family":"Tillis","given":"Gina","email":"","middleInitial":"M.","affiliations":[],"preferred":false,"id":202783,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":23764,"text":"ofr2000185 - 2000 - Hydrogeology and simulation of ground-water flow at the Gettysburg Elevator Plant Superfund Site, Adams County, Pennsylvania","interactions":[],"lastModifiedDate":"2022-08-31T20:46:57.544871","indexId":"ofr2000185","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2000","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":"2000-185","title":"Hydrogeology and simulation of ground-water flow at the Gettysburg Elevator Plant Superfund Site, Adams County, Pennsylvania","docAbstract":"Ground water in Triassic-age sedimentary fractured-rock aquifers in the area of Gettysburg, Pa., is used as drinking water and for industrial and commercial supply. In 1983, ground water at the Gettysburg Elevator Plant was found by the Pennsylvania Department of Environmental Resources to be contaminated with trichloroethene, 1,1,1-trichloroethane, and other synthetic organic compounds. As part of the U.S. Environmental Protection Agency?s Comprehensive Environmental Response, Compensation, and Liability Act, 1980 process, a Remedial Investigation was completed in July 1991, a method of site remediation was issued in the Record of Decision dated June 1992, and a Final Design Report was completed in May 1997. In cooperation with the U.S. Environmental Protection Agency in the hydrogeologic assessment of the site remediation, the U.S. Geological Survey began a study in 1997 to determine the effects of the onsite and offsite extraction wells on ground-water flow and contaminant migration from the Gettysburg Elevator Plant. This determination is based on hydrologic and geophysical data collected from 1991 to 1998 and on results of numerical model simulations of the local ground-water flow-system.\r\n\r\nThe Gettysburg Elevator Site is underlain by red, green, gray, and black shales of the Heidlersburg Member of the Gettysburg Formation. Correlation of natural-gamma logs indicates the sedimentary rock strike about N. 23 degrees E. and dip about 23 degrees NW. Depth to bedrock onsite commonly is about 6 feet but offsite may be as deep as 40 feet.\r\n\r\nThe ground-water system consists of two zones?a thin, shallow zone composed of soil, clay, and highly weathered bedrock and a thicker, nonweathered or fractured bedrock zone. The shallow zone overlies the bedrock zone and truncates the dipping beds parallel to land surface. Diabase dikes are barriers to ground-water flow in the bedrock zone. The ground-water system is generally confined or semi-confined, even at shallow depths.\r\n\r\nDepth to water can range from flowing at land surface to more than 71 feet below land surface. Potentiometric maps based on measured water levels at the Gettysburg Elevator Plant indicate ground water flows from west to east, towards Rock Creek. Multiple-well aquifer tests indicate the system is heterogeneous and flow is primarily in dipping beds that contain discrete secondary openings separated by less permeable beds. Water levels in wells open to the pumped bed, as projected along the dipping stratigraphy, are drawn down more than water levels in wells not open to the pumped bed.\r\n\r\nGround-water flow was simulated for steady-state conditions prior to pumping and long-term average pumping conditions. The three-dimensional numerical flow model (MODFLOW) was calibrated by use of a parameter estimation program (MODFLOWP). Steady-state conditions were assumed for the calibration period of 1996. An effective areal recharge rate of 7 inches was used in model calibration. The calibrated flow model was used to evaluate the effectiveness of the current onsite and offsite extraction well system. The simulation results generally indicate that the extraction system effectively captures much of the ground-water recharge at the Gettysburg Elevator Plant and, hence, contaminated ground-water migrating from the site. Some of the extraction wells pump at low rates and have very small contributing areas. Results indicate some areal recharge onsite will move to offsite extraction wells.","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr2000185","collaboration":"Prepared in cooperation with the U.S. Environmental Protection Agency","usgsCitation":"Low, D.J., Goode, D., and Risser, D.W., 2000, Hydrogeology and simulation of ground-water flow at the Gettysburg Elevator Plant Superfund Site, Adams County, Pennsylvania: U.S. Geological Survey Open-File Report 2000-185, vi, 34 p., https://doi.org/10.3133/ofr2000185.","productDescription":"vi, 34 p.","costCenters":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"links":[{"id":203590,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":7640,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/185/","linkFileType":{"id":5,"text":"html"}},{"id":406040,"rank":2,"type":{"id":36,"text":"NGMDB Index Page"},"url":"https://ngmdb.usgs.gov/Prodesc/proddesc_30032.htm","linkFileType":{"id":5,"text":"html"}}],"country":"United States","state":"Pennsylvania","county":"Adams County","otherGeospatial":"Gettysburg Elevator Plant Superfund Site","geographicExtents":"{\n \"type\": \"FeatureCollection\",\n \"features\": [\n {\n \"type\": \"Feature\",\n \"properties\": {},\n \"geometry\": {\n \"type\": \"Polygon\",\n \"coordinates\": [\n [\n [\n -77.25,\n 39.833\n ],\n [\n -77.208,\n 39.833\n ],\n [\n -77.208,\n 39.883\n ],\n [\n -77.25,\n 39.883\n ],\n [\n -77.25,\n 39.833\n ]\n ]\n ]\n }\n }\n ]\n}","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4be4b07f02db625380","contributors":{"authors":[{"text":"Low, Dennis J. djlow@usgs.gov","contributorId":3450,"corporation":false,"usgs":true,"family":"Low","given":"Dennis","email":"djlow@usgs.gov","middleInitial":"J.","affiliations":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"preferred":true,"id":190678,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Goode, Daniel J. 0000-0002-8527-2456 djgoode@usgs.gov","orcid":"https://orcid.org/0000-0002-8527-2456","contributorId":2433,"corporation":false,"usgs":true,"family":"Goode","given":"Daniel J.","email":"djgoode@usgs.gov","affiliations":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"preferred":false,"id":190677,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Risser, Dennis W. 0000-0001-9597-5406 dwrisser@usgs.gov","orcid":"https://orcid.org/0000-0001-9597-5406","contributorId":898,"corporation":false,"usgs":true,"family":"Risser","given":"Dennis","email":"dwrisser@usgs.gov","middleInitial":"W.","affiliations":[{"id":532,"text":"Pennsylvania Water Science Center","active":true,"usgs":true}],"preferred":true,"id":190676,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":23434,"text":"ofr0062 - 2000 - 2nd interface between ecology and land development in California","interactions":[],"lastModifiedDate":"2012-02-02T00:08:14","indexId":"ofr0062","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2000","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":"2000-62","title":"2nd interface between ecology and land development in California","docAbstract":"The 2nd Interface Between Ecology and Land Development Conference was held in association with Earth Day 1997, five years after the first Interface Conference. Rapid population growth in California has intensified the inevitable conflict between land development and preservation of natural ecosystems. Sustainable development requires wise use of diminishing natural resources and, where possible, restoration of damaged landscapes. These Earth Week Celebrations brought together resource managers, scientists, politicians, environmental consultants, and concerned citizens in an effort to improve the communication necessary to maintain our natural biodiversity, ecosystem processes and general quality of life.\r\n\r\nAs discussed by our keynote speaker, Michael Soule, the best predictor of habitat loss is population growth and nowhere is this better illustrated than in California. As urban perimeters expand, the interface between wildlands and urban areas increases. Few problems are more vexing than how to manage the fire prone ecosystems indigenous to California at this urban interface. Today resource managers face increasing challenges of dealing with this problem and the lead-off section of the proceedings considers both the theoretical basis for making decisions related to prescribed burning and the practical application.\r\n\r\nHabitat fragmentation is an inevitable consequence of development patterns with significant impacts on animal and plant populations. Managers must be increasingly resourceful in dealing with problems of fragmentation and the often inevitable consequences, including susceptibility to invasive oganisms. One approach to dealing with fragmentation problems is through careful landplanning. California is the national leader in the integration of conservation and economics. On Earth Day 1991, Governor Pete Wilson presented an environmental agenda that promised to create between land owners and environmentalists, agreements that would guarantee the protection of -endangered species and out of this grew the pioneering initiative, known as the Natural Communities Conservation Planning (NCCP) program.\r\n\r\nCalifornia's vast expanse of seemingly endless resources has traditionally been viewed as justification for abusive land use practices. The modem day recognition that resources are finite has led to greater concern, not only for conserving what is left, but for restoring abused landscapes. Ecological restoration is a new science devoted to returning disturbed environments to a semblance of their 'pristine' state. Based on principles of 'revegetation,' restoration goes far beyond simple replanting, rather the ambition of ecological restoration is to return landscapes to functioning ecosystems and is the focus of the last section. ","language":"ENGLISH","publisher":"Western Ecological Research Center, U.S. Geological Survey,","doi":"10.3133/ofr0062","issn":"0094-9140","usgsCitation":"Keeley, J.E., Baer-Keeley, M., and Fortheringham, C., 2000, 2nd interface between ecology and land development in California (Version 1.0): U.S. Geological Survey Open-File Report 2000-62, x, 300 p. :ill., maps ;28 cm., https://doi.org/10.3133/ofr0062.","productDescription":"x, 300 p. :ill., maps ;28 cm.","costCenters":[],"links":[{"id":8584,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/of00-062/","linkFileType":{"id":5,"text":"html"}},{"id":156988,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"edition":"Version 1.0","noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"53cd492be4b0b290850eef00","contributors":{"authors":[{"text":"Keeley, Jon E. 0000-0002-4564-6521 jon_keeley@usgs.gov","orcid":"https://orcid.org/0000-0002-4564-6521","contributorId":1268,"corporation":false,"usgs":true,"family":"Keeley","given":"Jon","email":"jon_keeley@usgs.gov","middleInitial":"E.","affiliations":[{"id":651,"text":"Western Ecological Research Center","active":true,"usgs":true}],"preferred":true,"id":190095,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Baer-Keeley, Melanie","contributorId":27093,"corporation":false,"usgs":true,"family":"Baer-Keeley","given":"Melanie","email":"","affiliations":[],"preferred":false,"id":190096,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Fortheringham, C.J.","contributorId":81142,"corporation":false,"usgs":true,"family":"Fortheringham","given":"C.J.","email":"","affiliations":[],"preferred":false,"id":190097,"contributorType":{"id":1,"text":"Authors"},"rank":3}]}} ,{"id":21624,"text":"ofr0046 - 2000 - Environmental quality and preservation; bedrock beneath reefs; the importance of geology in understanding biological decline in a modern reef ecosystem","interactions":[],"lastModifiedDate":"2012-02-02T00:07:58","indexId":"ofr0046","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2000","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":"2000-46","title":"Environmental quality and preservation; bedrock beneath reefs; the importance of geology in understanding biological decline in a modern reef ecosystem","docAbstract":"Environmental Quality and Preservation-Bedrock Beneath Reefs: the Importance of Geology in Understanding Biological Decline in a Modern Ecosystem' is a four-page and one-plate full-color discussion of the geologic framework and evolutionary history of the coral reef ecosystem that lines the outer shelf off the Florida Keys.","language":"ENGLISH","publisher":"U.S. Dept. of the Interior, U.S. Geological Survey,","doi":"10.3133/ofr0046","issn":"0566-8174","usgsCitation":"Lidz, B.H., 2000, Environmental quality and preservation; bedrock beneath reefs; the importance of geology in understanding biological decline in a modern reef ecosystem: U.S. Geological Survey Open-File Report 2000-46, 2 folded sheets (4 p., [1] folded leaf of plates) :ill. (some col.), maps (some col.) ;28 cm., https://doi.org/10.3133/ofr0046.","productDescription":"2 folded sheets (4 p., [1] folded leaf of plates) :ill. (some col.), maps (some col.) ;28 cm.","costCenters":[],"links":[{"id":155213,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"},{"id":9146,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://pubs.usgs.gov/of/2000/of00-046/","linkFileType":{"id":5,"text":"html"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a0fe4b07f02db5fec8b","contributors":{"authors":[{"text":"Lidz, Barbara H. blidz@usgs.gov","contributorId":2475,"corporation":false,"usgs":true,"family":"Lidz","given":"Barbara","email":"blidz@usgs.gov","middleInitial":"H.","affiliations":[],"preferred":true,"id":184958,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":38118,"text":"ofr00184 - 2000 - MODFLOW-2000, the U.S. Geological Survey modular ground-water model; user guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs","interactions":[],"lastModifiedDate":"2017-07-11T13:45:37","indexId":"ofr00184","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2000","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":"2000-184","title":"MODFLOW-2000, the U.S. Geological Survey modular ground-water model; user guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs","docAbstract":"This report documents the Observation, Sensitivity, and Parameter-Estimation Processes of the ground-water modeling computer program MODFLOW-2000. The Observation Process generates model-calculated values for comparison with measured, or observed, quantities. A variety of statistics is calculated to quantify this comparison, including a weighted least-squares objective function. In addition, a number of files are produced that can be used to compare the values graphically. The Sensitivity Process calculates the sensitivity of hydraulic heads throughout the model with respect to specified parameters using the accurate sensitivity-equation method. These are called grid sensitivities. If the Observation Process is active, it uses the grid sensitivities to calculate sensitivities for the simulated values associated with the observations. These are called observation sensitivities. Observation sensitivities are used to calculate a number of statistics that can be used (1) to diagnose inadequate data, (2) to identify parameters that probably cannot be estimated by regression using the available observations, and (3) to evaluate the utility of proposed new data.
The Parameter-Estimation Process uses a modified Gauss-Newton method to adjust values of user-selected input parameters in an iterative procedure to minimize the value of the weighted least-squares objective function. Statistics produced by the Parameter-Estimation Process can be used to evaluate estimated parameter values; statistics produced by the Observation Process and post-processing program RESAN-2000 can be used to evaluate how accurately the model represents the actual processes; statistics produced by post-processing program YCINT-2000 can be used to quantify the uncertainty of model simulated values.
Parameters are defined in the Ground-Water Flow Process input files and can be used to calculate most model inputs, such as: for explicitly defined model layers, horizontal hydraulic conductivity, horizontal anisotropy, vertical hydraulic conductivity or vertical anisotropy, specific storage, and specific yield; and, for implicitly represented layers, vertical hydraulic conductivity. In addition, parameters can be defined to calculate the hydraulic conductance of the River, General-Head Boundary, and Drain Packages; areal recharge rates of the Recharge Package; maximum evapotranspiration of the Evapotranspiration Package; pumpage or the rate of flow at defined-flux boundaries of the Well Package; and the hydraulic head at constant-head boundaries. The spatial variation of model inputs produced using defined parameters is very flexible, including interpolated distributions that require the summation of contributions from different parameters.
Observations can include measured hydraulic heads or temporal changes in hydraulic heads, measured gains and losses along head-dependent boundaries (such as streams), flows through constant-head boundaries, and advective transport through the system, which generally would be inferred from measured concentrations.
MODFLOW-2000 is intended for use on any computer operating system. The program consists of algorithms programmed in Fortran 90, which efficiently performs numerical calculations and is fully compatible with the newer Fortran 95. The code is easily modified to be compatible with FORTRAN 77. Coordination for multiple processors is accommodated using Message Passing Interface (MPI) commands. The program is designed in a modular fashion that is intended to support inclusion of new capabilities.
","language":"English","publisher":"U.S. Geological Survey","publisherLocation":"Denver, CO","doi":"10.3133/ofr00184","issn":"0094-9140","collaboration":"Prepared in cooperation with the U.S. Department of Energy","usgsCitation":"Hill, M.C., Banta, E.R., Harbaugh, A., and Anderman, E., 2000, MODFLOW-2000, the U.S. Geological Survey modular ground-water model; user guide to the observation, sensitivity, and parameter-estimation processes and three post-processing programs: U.S. Geological Survey Open-File Report 2000-184, Report: ix, 209 p. , https://doi.org/10.3133/ofr00184.","productDescription":"Report: ix, 209 p. ","startPage":"1","endPage":"209","numberOfPages":"219","costCenters":[{"id":493,"text":"Office of Ground Water","active":true,"usgs":true}],"links":[{"id":165531,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0184/report-thumb.jpg"},{"id":64368,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0184/report.pdf","linkFileType":{"id":1,"text":"pdf"}},{"id":3454,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://water.usgs.gov/nrp/gwsoftware/modflow2000/ofr00-184.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a7fe4b07f02db648cee","contributors":{"authors":[{"text":"Hill, Mary C. mchill@usgs.gov","contributorId":974,"corporation":false,"usgs":true,"family":"Hill","given":"Mary","email":"mchill@usgs.gov","middleInitial":"C.","affiliations":[{"id":5044,"text":"National Research Program - Central Branch","active":true,"usgs":true}],"preferred":true,"id":219055,"contributorType":{"id":1,"text":"Authors"},"rank":1},{"text":"Banta, E. R.","contributorId":63038,"corporation":false,"usgs":true,"family":"Banta","given":"E.","email":"","middleInitial":"R.","affiliations":[],"preferred":false,"id":219057,"contributorType":{"id":1,"text":"Authors"},"rank":2},{"text":"Harbaugh, A.W.","contributorId":15208,"corporation":false,"usgs":true,"family":"Harbaugh","given":"A.W.","email":"","affiliations":[],"preferred":false,"id":219054,"contributorType":{"id":1,"text":"Authors"},"rank":3},{"text":"Anderman, E.R.","contributorId":62241,"corporation":false,"usgs":true,"family":"Anderman","given":"E.R.","affiliations":[],"preferred":false,"id":219056,"contributorType":{"id":1,"text":"Authors"},"rank":4}]}} ,{"id":24821,"text":"ofr00190 - 2000 - Proposal and work plan to calibrate and verify a water-quality model to simulate effects of wastewater discharges to the Red River of the North at drought streamflow near Fargo, North Dakota, and Moorhead, Minnesota","interactions":[],"lastModifiedDate":"2018-03-14T16:39:45","indexId":"ofr00190","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2000","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":"2000-190","title":"Proposal and work plan to calibrate and verify a water-quality model to simulate effects of wastewater discharges to the Red River of the North at drought streamflow near Fargo, North Dakota, and Moorhead, Minnesota","docAbstract":"This report presents a proposal for conducting a water-quality modeling study at drought streamflow, a detailed comprehensive plan for collecting the data, and an annual drought-formation monitoring plan. A 30.8 mile reach of the Red River of the North receives treated wastewater from plants at Fargo, North Dakota, and Moorhead, Minnesota, and streamflow from the Sheyenne River. The water-quality modeling study will evaluate the effects of continuous treated-wastewater discharges to the study reach at drought streamflow. The study will define hydraulic characteristics and reaeration and selected reaction coefficients and will calibrate and verity a model.
The study includes collecting synoptic water-quality samples for various types of analyses at a number of sites in the study reach. Dye and gas samples will be collected for traveltime and reaeration measurements. Using the Lagrangian reference frame, synoptic water-quality samples will be collected for analysis of nutrients, chlorophyll a, alkalinity, and carbonaceous biochemical oxygen demand. Field measurements will be made of specific conductance, pH, air and water temperature, dissolved oxygen, and sediment oxygen demand. Two sets of water-quality data will be collected. One data set will be used to calibrate the model, and the other data set will be used to verity the model.
The DAFLOW/BLTM models will be used to evaluate the effects of the treated wastewater on the water quality of the river. The model will simulate specific conductance, temperature, dissolved oxygen, carbonaceous biochemical oxygen demand, total nitrogen (organic, ammonia, nitrite, nitrate), total orthophosphorus, total phosphorus, and phytoplankton as chlorophyll a.
The work plan identifies and discusses the work elements needed for accomplishing the data collection for the study. The work elements specify who will provide personnel, vehicles, instruments, and supplies needed during data collection. The work plan contains instructions for data collection; inventory lists of needed personnel, vehicles, instruments, and supplies; and examples of computations for determining quantities of tracer to be injected into the stream. The work plan also contains an annual drought-formation monitoring plan that includes a 9-month time line that specifies when essential planning actions must occur before actual project start up.
Drought streamflows are rare. The annual drought-formation monitoring plan is presented to assist project planning by providing early warning that conditions are favorable to produce drought streamflow. The plan to monitor drought-forming conditions discusses the drought indices to be monitored. To establish a baseline, historic values for some of the drought indices for selected years were reviewed. An annual review of the drought indices is recommended.
","language":"English","publisher":"U.S. Geological Survey","doi":"10.3133/ofr00190","issn":"0094-9140","usgsCitation":"Wesolowski, E.A., 2000, Proposal and work plan to calibrate and verify a water-quality model to simulate effects of wastewater discharges to the Red River of the North at drought streamflow near Fargo, North Dakota, and Moorhead, Minnesota: U.S. Geological Survey Open-File Report 2000-190, iv, 60 p., https://doi.org/10.3133/ofr00190.","productDescription":"iv, 60 p.","costCenters":[{"id":478,"text":"North Dakota Water Science Center","active":true,"usgs":true},{"id":34685,"text":"Dakota Water Science Center","active":true,"usgs":true}],"links":[{"id":157105,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/of/2000/0190/report-thumb.jpg"},{"id":53829,"rank":300,"type":{"id":11,"text":"Document"},"url":"https://pubs.usgs.gov/of/2000/0190/report.pdf","linkFileType":{"id":1,"text":"pdf"}}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a9ae4b07f02db65d85f","contributors":{"authors":[{"text":"Wesolowski, Edwin A.","contributorId":14014,"corporation":false,"usgs":true,"family":"Wesolowski","given":"Edwin","email":"","middleInitial":"A.","affiliations":[],"preferred":false,"id":192626,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ,{"id":27992,"text":"wri004052 - 2000 - Effects of alternative Missouri River management plans on ground-water levels in the lower Missouri River flood plain","interactions":[],"lastModifiedDate":"2012-02-02T00:08:40","indexId":"wri004052","displayToPublicDate":"2001-04-01T00:00:00","publicationYear":"2000","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":"2000-4052","title":"Effects of alternative Missouri River management plans on ground-water levels in the lower Missouri River flood plain","docAbstract":"In 1998, the U.S. Army Corps of Engineers (USACE) proposed eight Alternative River Management Plans (ARMPs) for managing reservoir levels and water-release rates for the Missouri River. The plans include the Current Water Control Plan (CWCP), Conservation 18, 31, and 44 (C18, C31, and C44) that provide different levels of water conservation in the reservoirs during droughts, Fish and Wildlife 10, 15, and 20 (FW10, FW15, and FW20) that vary water-release rates to provide additional fish and wildlife benefits, and Mississippi River 66 (M66) that maintains a 66,000 cubic feet per second discharge at St. Louis to provide navigation support for the Mississippi River. Releases from Gavin?s Point Dam affect both the lower 1,305 kilometers of the Missouri River and ground-water levels in the lower Missouri River flood plain. Changes in the magnitude and timing of ground-water-level fluctuations in response to changes in river management could impact agriculture, urban development, and wetland hydrology along the lower Missouri River flood plain. This study compared simulated ground-water altitude and depth to ground water for the CWCP in the Missouri River alluvial aquifer near the Kansas City area between 1970 and 1980 with each ARMP, determined the average change in simulated ground-water level for selected river-stage flood pulses at selected distances from the river, and compared simulated flood pulse, ground-water responses with actual flood pulse, and ground-water responses measured in wells located at three sites along the lower Missouri River flood plain.For the model area, the percent total shallow ground-water area (depth to ground water less than 0.3048 meter) is similar for each ARMP because of overall similarities in river flow between ARMPs. The percent total shallow ground-water area for C18 is the most similar to CWCP followed by C31, M66, C44, FW10, FW15, and FW20. ARMPs C18, C31, C44, and M66 do not cause large changes in the percent shallow ground-water area when compared to CWCP. FW10 and FW15 each cause a spring increase and a summer decrease in the shallow ground-water area. FW20 has a larger spring increase in the shallow ground-water area, but the largest decrease is delayed into November. Analysis of daily changes between the ARMPs indicate large differences can exist in both duration and extent of shallow ground-water areas.A series of 12 flood pulses of 0.5-, 1-, and 3-meters in magnitude and 1-, 8-, 32-, and 128-days in duration were simulated using the ground-water flow model. A ground-water response factor (GWRF, defined as the change in ground-water level at a known distance from the river, at a specified time after the beginning of a flood pulse divided by the magnitude of the flood pulse) was determined daily for selected distances from the river. The GWRF multiplied by the magnitude of the flood pulse can be used to estimate the change in ground-water level at a known time after the beginning of a flood pulse for a known distance from the river. Flood-pulse simulation results indicate the relatively small impact on ground-water levels of small river-stage fluctuations of short duration as might occur daily or weekly. The larger impact on ground-water levels from larger river-stage increases of longer duration indicate the importance of river management flow releases, seasonal changes in river flow, and the effects of continuous high-river stage for long periods on ground-water levels of the lower Missouri River flood plain.A comparison of model results to well hydrographs from three areas along the lower Missouri River flood plain was used to determine how closely the simulated GWRFs matched the measured GWRFs for similar flood pulses and the transferability of GWRFs to other parts of the lower Missouri River flood plain. The comparison between the measured and simulated ground-water responses indicate that the simulated ground-water responses can provide a reasonable estimate of the ground-water resp","language":"ENGLISH","publisher":"U.S. Department of the Interior, U.S. Geological Survey ;\r\nBranch of Information Services [distributor],","doi":"10.3133/wri004052","usgsCitation":"Kelly, B.P., 2000, Effects of alternative Missouri River management plans on ground-water levels in the lower Missouri River flood plain: U.S. Geological Survey Water-Resources Investigations Report 2000-4052, vi, 128 p. :ill. (some col.), maps ;28 cm., https://doi.org/10.3133/wri004052.","productDescription":"vi, 128 p. :ill. (some col.), maps ;28 cm.","costCenters":[],"links":[{"id":2233,"rank":100,"type":{"id":15,"text":"Index Page"},"url":"https://mo.water.usgs.gov/indep/kelly/MORvrmgmt_plans/","linkFileType":{"id":5,"text":"html"}},{"id":158659,"rank":0,"type":{"id":24,"text":"Thumbnail"},"url":"https://pubs.usgs.gov/thumbnails/usgs_thumb.jpg"}],"noUsgsAuthors":false,"publicationStatus":"PW","scienceBaseUri":"4f4e4a4ae4b07f02db624acd","contributors":{"authors":[{"text":"Kelly, Brian P. 0000-0001-6378-2837 bkelly@usgs.gov","orcid":"https://orcid.org/0000-0001-6378-2837","contributorId":897,"corporation":false,"usgs":true,"family":"Kelly","given":"Brian","email":"bkelly@usgs.gov","middleInitial":"P.","affiliations":[{"id":396,"text":"Missouri Water Science Center","active":true,"usgs":true},{"id":353,"text":"Kansas Water Science Center","active":false,"usgs":true}],"preferred":true,"id":199028,"contributorType":{"id":1,"text":"Authors"},"rank":1}]}} ]}