Aquifer geochemistry and effects of pumping on ground-water quality at the Green Belt Parkway Well Field, Holbrook, Long Island, New York
Craig J. Brown, Steven Colabufo, John D. Coates
2002, Water-Resources Investigations Report 2001-4025
Geochemistry, microbiology, and water quality of the Magothy aquifer at a new supply well in Holbrook were studied to help identify factors that contribute to iron-related biofouling of public-supply wells. The organic carbon content of borehole sediments from the screen zone, and the dominant terminal electron-accepting processes (TEAPs), varied by...
Southwest Geographic Science Team
Ann Frazier
2002, Fact Sheet 028-02
Sources of metal loads to the Alamosa River and estimation of seasonal and annual metal loads for the Alamosa River basin, Colorado, 1995-97
Roderick F. Ortiz, Patrick Edelmann, Sheryl Ferguson, Robert Stogner Sr.
2002, Water-Resources Investigations Report 2002-4128
Metal contamination in the upper Alamosa River Basin has occurred for decades from the Summitville Mine site, from other smaller mines, and from natural, metal-enriched acidic drainage in the basin. In 1995, the need to quantify contamination from various source areas in the basin and to quantify the spatial, seasonal,...
Nutrient dynamics in five off-stream reservoirs in the lower South Platte River basin, March-September 1995
Lori A. Sprague
2002, Water-Resources Investigations Report 2002-4142
In 1995, the U.S. Geological Survey conducted a study to characterize nutrient concentrations in five off-stream reservoirs in the lower South Platte River Basin?Riverside, Jackson, Prewitt, North Sterling, and Julesburg. These reservoirs are critical sources of irrigation water for agricultural areas, and several also are used for fishing, boating, swimming,...
Ground-water flow and numerical simulation of recharge from streamflow infiltration near Pine Nut Creek, Douglas County, Nevada
Douglas K. Maurer
2002, Water-Resources Investigations Report 2002-4145
Ground-water flow and recharge from infiltration near Pine Nut Creek, east of Gardnerville, Nevada, were simulated using a single-layer numerical finite-difference model as part of a study made by the U.S. Geological Survey in cooperation with the Carson Water Subconservancy District. The model was calibrated to 190 water-level measurements made...
A data input program (MFI2K) for the U.S. Geological Survey modular ground-water model (MODFLOW-2000)
Arlen W. Harbaugh
2002, Open-File Report 2002-41
MFI2K is a data-input (entry) program for the U.S. Geological Survey modular three-dimensional finite-difference ground-water model, MODFLOW-2000. MFI2K runs on personal computers. MFI2K supports the solute transport and parameter-estimation capabilities that are incorporated in MODFLOW-2000. Data for MODPATH, a particle-tracking program for use with MODFLOW-2000, also can be entered using...
Three-dimensional hydrogeologic framework model for use with a steady-state numerical ground-water flow model of the Death Valley regional flow system, Nevada and California
Wayne R. Belcher, Claudia C. Faunt, Frank A. D’Agnese
2002, Water-Resources Investigations Report 2001-4254
The U.S. Geological Survey, in cooperation with the Department of Energy and other Federal, State, and local agencies, is evaluating the hydrogeologic characteristics of the Death Valley regional ground-water flow system. The ground-water flow system covers an area of about 100,000 square kilometers from latitude 35? to 38?15' North to...
Characterization of selenium in the lower Gunnison River basin, Colorado, 1988-2000
David L. Butler, Kenneth J. Leib
2002, Water-Resources Investigations Report 2002-4151
Selenium concentrations in certain water bodies in the lower Gunnison River Basin, including the lower Gunnison River and lower Uncompahgre River, have exceeded the Colorado water-quality standard of 5 micrograms per liter for selenium. A task force was formed in 1998 that consists of various government agencies, private irrigation companies,...
The Mississippi River Valley Alluvial Aquifer in Arkansas: A Sustainable Water Resource?
John B. Czarnecki, Phillip D. Hays, Paul W. McKee
2002, Fact Sheet 041-02
Farm Ponds Work for Wildlife
Water Resources Division, U.S. Geological Survey
2002, Fact Sheet 043-02
The Difference Between the Potentiometric Surfaces of the Magothy Aquifer, September 1975 and September 2001 in Southern Maryland
Stephen E. Curtin, David C. Andreasen, Judith C. Wheeler
2002, Open-File Report 2002-445
This report presents a map showing the change in the potentiometric surface of the Magothy aquifer in the Magothy Formation of Cretaceous age in Southern Maryland for September 1975 and September 2001. The map, based on water level measurements in 54 wells, shows that during the 26-year period, the potentiometric...
Compilation of minimum and maximum isotope ratios of selected elements in naturally occurring terrestrial materials and reagents
T.B. Coplen, J.A. Hopple, J.K. Böhlke, H.S. Peiser, S.E. Rieder, H.R. Krouse, K.J.R. Rosman, T. Ding, R.D. Vocke Jr., K.M. Revesz, A. Lamberty, P. Taylor, P. De Bievre
2002, Water-Resources Investigations Report 2001-4222
Documented variations in the isotopic compositions of some chemical elements are responsible for expanded uncertainties in the standard atomic weights published by the Commission on Atomic Weights and Isotopic Abundances of the International Union of Pure and Applied Chemistry. This report summarizes reported variations in the isotopic compositions of 20...
Hurricane Mitch: Peak Discharge for Selected River Reachesin Honduras
Mark E. Smith, Jeffrey V. Phillips, Norman E. Spahr
2002, Water-Resources Investigations Report 2001-4266
Hurricane Mitch began as a tropical depression in the Caribbean Sea on 22 October 1998. By 26 October, Mitch had strengthened to a Category 5 storm as defined by the Saffir-Simpson Hurricane Scale (National Climate Data Center, 1999a), and on 27 October was threatening the northern coast of Honduras (fig....
Hydrogeology and water-quality characteristics of the Lower Floridan aquifer in east-central Florida
Andrew M. O’Reilly, Rick M. Spechler, Brian E. McGurk
2002, Water-Resources Investigations Report 2002-4193
The hydrogeology and water-quality characteristics of the Lower Floridan aquifer and the relation of the Lower Floridan aquifer to the framework of the Floridan aquifer system were evaluated during a 6-year (1995-2001) study. The study area, a 7,500 square-mile area of east-central Florida, is underlain by three principal hydrogeologic units:...
SutraPrep, a pre-processor for SUTRA, a model for ground-water flow with solute or energy transport
Alden M. Provost
2002, Open-File Report 2002-376
SutraPrep facilitates the creation of three-dimensional (3D) input datasets for the USGS ground-water flow and transport model SUTRA Version 2D3D.1. It is most useful for applications in which the geometry of the 3D model domain and the spatial distribution of physical properties and boundary conditions is relatively simple. SutraPrep can...
Geochemical Sediment Analysis Procedures
Sarah Jablonski, E.L. Mecray, J.M. Munson, D.S. Blackwood
2002, Open-File Report 2002-371
Ordering Procedures for Photographic Enlargement Products - NAPP, NHAP, and Custom
Water Resources Division, U.S. Geological Survey
2002, Fact Sheet 102-02
Water Resources Data--California, Water Year 2002, Volume 4. Northern Central Valley Basins and The Great Basin from Honey Lake Basin to Oregon State Line
J.R. Smithson, M.F. Friebel, M.D. Webster, G.L. Rockwell
2002, Water Data Report CA-02-4
Water-resources data for the 2002 water year for California consist of records of stage, discharge, and water quality of streams, stage and contents in lakes and reservoirs, and water levels and water quality in wells. Volume 4 contains discharge records for 191 gaging stations, stage and contents for 60 lakes...
Water Resources Data, Connecticut, Water Year 2001
J. Morrison, P.L. Provencher, J.W. Martin, J.R. Norris
2002, Water Data Report CT-01-1
EMINERS -- An Economic Mineral Resource Simulator
Joseph S. Duval
2002, Open-File Report 2002-380
Geologic map of the southern Ivrea-Verbano zone, northwestern Italy
James E. Quick, S. Sinigoi, A.W. Snoke, T.J. Kalakay, A. Mayer, G. Peressini
2002, IMAP 2776
Real-time ground-water-level monitoring in New Jersey
Walter D. Jones, Anthony S. Navoy, Daryll A. Pope
2002, Fact Sheet 011-02
A network of seven observation wells that transmit ground-water-level data on a real-time basis through satellite telemetry is operating (started May 2001) in New Jersey through a cooperative effort of the U.S. Geological Survey (USGS) and the New Jersey Department of Environmental Protection (NJDEP). The water-level data from these observation...
Field tests of diffusion samplers for inorganic constituents in wells and at a ground-water discharge zone
Don A. Vroblesky, Matthew D. Petkewich, Ted R. Campbell
2002, Water-Resources Investigations Report 2002-4031
Field tests were performed on two types of diffusion samplers to collect representative samples of inorganic constituents from ground water in wells and at an arsenic-contaminated ground-water-discharge zone beneath a stream. Nylon-screen samplers and dialysis samplers were tested for the collection of arsenic, calcium, chloride, iron, manganese, sulfate, and dissolved...
Near-real-time simulation and internet-based delivery of forecast-flood inundation maps using two-dimensional hydraulic modeling--A pilot study for the Snoqualmie River, Washington
Joseph L. Jones, Janice M. Fulford, Frank D. Voss
2002, Water-Resources Investigations Report 2002-4251
A system of numerical hydraulic modeling, geographic information system processing, and Internet map serving, supported by new data sources and application automation, was developed that generates inundation maps for forecast floods in near real time and makes them available through the Internet. Forecasts for flooding are generated by the National...
Simulation of Transient Ground-Water Flow in the Valley-Fill Aquifers of the Upper Rockaway River Basin, Morris County, New Jersey
Alison D. Gordon
2002, Water-Resources Investigations Report 2001-4174
More than 90 percent of the public water supply in the upper Rockaway River Valley in Morris County, New Jersey, is obtained from ground-water withdrawals from the valley-fill aquifers. During 1997, an average of 9.6 million gallons per day of ground water was withdrawn from these aquifers. The aquifer system...
