Water quality at basic fixed sites in the upper Colorado River basin National Water-Quality Assessment study unit, October 1995-September 1998
Norman E. Spahr, Robert W. Boulger, Richard J. Szmajter
2000, Water-Resources Investigations Report 99-4223
The Upper Colorado River Basin study unit of the U.S. Geological Survey National Water-Quality Assessment Program consists of the Colorado River watershed upstream from near the Colorado-Utah State line. The basin is about equally divided between the Southern Rocky Mountains and the Colorado Plateau physiographic provinces. Data were collected at...
Metals transport in the Sacramento River, California, 1996-1997; Volume 2: Interpretation of metal loads
Charles N. Alpers, Ronald C. Antweiler, Howard E. Taylor, Peter D. Dileanis, Joseph L. Domagalski, editor(s)
2000, Water-Resources Investigations Report 2000-4002
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,...
Conceptual evaluation of ground-water flow and simulated effects of changing irrigation practices on the shallow aquifer in the Fallon and Stillwater areas, Churchill County, Nevada
Nora Berggren Herrera, R. L. Seiler, David E. Prudic
2000, Water-Resources Investigations Report 99-4191
Aquifer compaction and ground-water levels in south-central Arizona
Daniel W. Evans, Donald R. Pool
2000, Water-Resources Investigations Report 99-4249
As of 1998, the U.S. Geological Survey is monitoring water-level fluctuationa dn aquifer compaction at 19 wells that are fitted with borehole extensometers in the Eloy Basin, Stanfield Basin, Avra Valley, and Upper Santa Cruz Basin. Decreased ground-water pumping has resulted in water-level recoveries of more than 100 feet at...
Status of water levels and selected water-quality conditions in the Sparta and Memphis aquifers in eastern and south-central Arkansas, 1999
Robert L. Joseph
2000, Water-Resources Investigations Report 2000-4009
During the spring of 1999, water levels were measured in the Sparta and Memphis aquifers in 321 wells in eastern and south-central Arkansas. Water samples were collected during the spring and summer of 1999 from wells completed in these aquifers. The specific conductance of the ground water was measured from...
Computed roughness coefficients for Skunk Creek above Interstate 17, Maricopa County, Arizona
Christie M. O’Day, Jeff V. Phillips
2000, Water-Resources Investigations Report 99-4248
In the winter of 1997-98, the U.S. Geological Survey, in cooperation with the Flood Control District of Maricopa County, made six verification measurements for Manning's roughness coefficients at Skunk Creek above Interstate 17. Data from four floodflows were recorded and analyzed, three of these flows occurred in February 1998 when...
Phosphorus and E. coli in the Fanno and Bronson Creek subbasins of the Tualatin River basin, Oregon, during summer low-flow conditions, 1996
Kathleen A. McCarthy
2000, Water-Resources Investigations Report 2000-4062
As part of an ongoing cooperative study between the Unified Sewerage Agency of Washington County, Oregon, and the U.S. Geological Survey, phosphorus and Escherichia coli (E. coli) concentrations were measured in the Fanno and Bronson Creek subbasins of the Tualatin River Basin during September 1996. Data were collected at 19...
Arsenic in ground water in Sanilac County, Michigan
Sheridan K. Haack, Cynthia M. Rachol
2000, Fact Sheet 132-00
Previous studies of ground-water resources in Michigan by the Michigan Department of Community Health (MDCH), the Michigan Department of Environmental Quality (MDEQ), and the U.S. Geological Survey (USGS) indicate that in several counties in the southeastern part of the State the concentrations of arsenic in ground water may exceed the...
Arsenic in ground water in Washtenaw County, Michigan
Sheridan K. Haack, Cynthia M. Rachol
2000, Fact Sheet 134-00
Previous studies of ground-water resources in Michigan by the Michigan Department of Community Health (MDCH), the Michigan Department of Environmental Quality (MDEQ), and the U.S. Geological Survey (USGS) indicate that in several counties in the southeastern part of the State the concentrations of arsenic in ground water may exceed the...
Effects of land use and hydrogeology on the water quality of alluvial aquifers in eastern Iowa and southern Minnesota, 1997
Mark E. Savoca, Eric M. Sadorf, S. Mike Linhart, Kim K.B. Akers
2000, Water-Resources Investigations Report 99-4246
Ground-water samples were collected from monitoring wells at 31 agricultural and 30 urban sites in the Eastern Iowa Basins study unit during June–August 1997 to evaluate the effects of land use and hydrogeology on the water quality of alluvial aquifers. Ground-water samples were analyzed for common ions, nutrients, dissolved organic...
Water quality in the central Arizona basins, Arizona, 1995-98
Gail E. Cordy, Dorinda J. Gellenbeck, Joseph B. Gebler, David W. Anning, Alissa L. Coes, Robert J. Edmonds, Julie A.H. Rees, H. W. Sanger
2000, Circular 1213
The water quality in rivers and streams and in selected aquifers in central Arizona basins in Arizona is described and illustrated. Major ions, nitrogen and other nutrients, and pesticides and some of their breakdown compounds were analyzed in both surface and ground water. Biological communities that included fish, invertebrates, and...
Sedimentation survey of Lago Guajataca, Puerto Rico, January 1999
Luis R. Soler-Lopez, Richard M. T. Webb, Ramon A. Carrasquillo-Nieves
2000, Water-Resources Investigations Report 2000-4044
Methods of rating unsaturated zone and watershed characteristics of public water supplies in North Carolina
Jo Leslie Eimers, J.C. Weaver, Silvia Terziotti, R.W. Midgette
2000, Water-Resources Investigations Report 99-4283
Overlay and index methods were derived for rating the unsaturated zone and watershed characteristics for use by the State of North Carolina in assessing more than 11,000 public water-supply wells and approximately 245 public surface-water intakes. The rating of the unsaturated zone and watershed characteristics represents a practical and effective...
1998 Assessment of Undiscovered Deposits of Gold, Silver, Copper, Lead, and Zinc in the United States
The U.S. Geological Survey National Mineral Resource Assessment Team
2000, Circular 1178
This report summarizes the results of the 1998 National Mineral Resource Assessment that estimated the gold, silver, copper, lead, and zinc in undiscovered deposits in the United States. This project also estimated the identified resources and past production of these five metals. Assessment results include the following: (1) It is...
Nutrients and Suspended Solids in Surface Waters of the Upper Illinois River Basin in Illinois, Indiana, and Wisconsin, 1978-97
Daniel J. Sullivan
2000, Water-Resources Investigations Report 99-4275
A retrospective analysis of selected data on nutrients and suspended solids in surface waters of the upper Illinois River Basin was done as part of the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) Program. Approximately 91 percent of the upper Illinois River Basin is drained by three principal rivers:...
Sedimentation survey of Lago La Plata, Puerto Rico, October 1998
Luis R. Soler-Lopez, Richard M. T. Webb, Ramon A. Carrasquillo-Nieves
2000, Water-Resources Investigations Report 2000-4045
Analysis of nitrate and volatile organic compound data for ground water in the Great Salt Lake Basins, Utah, Idaho, and Wyoming, 1980-98
Susan A. Thiros
2000, Water-Resources Investigations Report 2000-4043
In 1995, ground water was the source of drinking water to about 52 percent of the population served by public drinking water systems in the Great Salt Lake Basins study unit, which includes parts of Utah, Idaho, and Wyoming. Existing nitrate and volatile organic compound data for ground water collected...
Geologic map of the Christian quadrangle, Alaska
W. P. Brosge, H. N. Reiser
2000, Open-File Report 2000-192
Most of the Christian quadrangle is in the Porcupine Plateau; the northwestern part is in the southern Brooks Range, and the southern quarter is in the Yukon Flats. Outcrops of bedrock are poor or lacking, except in the Brooks Range. Although large valley glaciers have moved through the Porcupine Plateau,...
Analytical results and sample locality map for rock, stream-sediment, and soil samples, Northern and Eastern Colorado Desert BLM Resource Area, Imperial, Riverside, and San Bernardino counties, California
Harley D. King, Maurice A. Chaffee
2000, Open-File Report 2000-105-A
In 1996-1998 the U.S. Geological Survey (USGS) conducted a geochemical study of the Bureau of Land Management’s (BLM) 5.5 million-acre Northern and Eastern Colorado Desert Resource Area (usually referred to as the NECD in this report), Imperial, Riverside, and San Bernardino Counties, southeastern California (figure 1). This study was done...
Hydrogeology and simulation of ground-water flow at the Gettysburg Elevator Plant Superfund Site, Adams County, Pennsylvania
Dennis J. Low, Daniel J. Goode, Dennis W. Risser
2000, Open-File Report 2000-185
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...
Effects of alternative Missouri River management plans on ground-water levels in the lower Missouri River flood plain
Brian P. Kelly
2000, Water-Resources Investigations Report 2000-4052
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...
Occurrence of fishes at 38 sites in the Mississippi Embayment study unit, 1996-98
B. G. Justus, B.J. Caskey
2000, Open-File Report 99-605
Reconnaissance of hydrology and water quality of Lake Susupe, Saipan, Commonwealth of the Northern Mariana Islands, 1990
Michael F. Wong, Barry R. Hill
2000, Water-Resources Investigations Report 2000-4054
Water quality in the Allegheny and Monongahela River basins, Pennsylvania, West Virginia, New York, and Maryland, 1996-98
Robert M. Anderson, Kevin M. Beer, Theodore F. Buckwalter, Mary E. Clark, Steven D. McAuley, James I. Sams III, Donald R. Williams
2000, Circular 1202
Major influences and findings for ground water quality, surface water quality, and biology in the Allegheny and Monongahela River basins are described and illustrated. Samples were collected in a variety of media to determine trace elements, sulfate, pesticides, nitrate, volatile organic compounds, organochlorine compounds, and radon-222. This report discusses the...
Physical, chemical, and biological data for the Uncompahgre Project area and the Grand Valley, west-central Colorado, 1993-98
David L. Butler, Barbara Campbell Osmundson
2000, Open-File Report 99-453
No abstract available....
