Geologic map of the Silver Lake Quadrangle, Cowlitz County, Washington
R.C. Evarts
2001, Miscellaneous Field Studies Map 2371
This digital map database, compiled from previously published and unpublished data, and new mapping by the authors, represents the general distribution of bedrock and surficial deposits of the Silver lake 7.5 minute quadrangle. The database delineates map units that are identified by general age and lithology following the stratigraphic...
Geology, hydrology, and water quality in the vicinity of a Brownfield redevelopment site in East Moline, Illinois
Robert T. Kay
2001, Open-File Report 2000-400
An investigation of the geology, hydrology, and water quality in the vicinity of a Brownfield redevelopment site in East Moline, Illinois, was designed to determine if metals and organic compounds detected in the fill deposits in this area posed a threat to the water resources. The hydrologic features of concern...
Fossil mammals of the middle Rio Grande; annotated dataset and bibliography of New Mexico vertebrate paleontology
Kevin C. McKinney, R.H. Tedford, G.S. Morgan, T.E. Williamson
2001, Open-File Report 2001-23
Importance of the predator's ecological neighborhood in modeling predation on migrating prey
Donald L. DeAngelis, James H. Petersen
2001, Oikos (94) 315-325
Most mathematical descriptions of predator-prey interactions fail to take into account the spatio-temporal structures of the populations, which can lead to errors or misinterpretations. For example, a compact pulse of prey migrating through a field of quasi-stationary predators may not be well described by standard predator-prey models, because the predators...
Gamma-ray, magnetic, and topographic data for parts of the Colorado Front Range
Joseph S. Duval, J. C. Reed, Isidore Zietz
2001, Open-File Report 2000-331
A primer on water quality
G. E. Cordy
2001, Fact Sheet 027-01
Water resources of Monroe County, New York, water years 1994-96, with emphasis on water quality in the Irondequoit Creek basin: Atmospheric deposition, ground water, streamflow, trends in water quality, and chemical loads to Irondequoit Bay
Donald A. Sherwood
2001, Water-Resources Investigations Report 2000-4201
Irondequoit Creek drains 169 square miles in the eastern part of Monroe County. Nutrients transported by Irondequoit Creek to Irondequoit Bay on Lake Ontario have contributed to the eutrophication of the Bay. Sewage-treatment-plant effluent, a major source of nutrients to the creek and its tributaries, was eliminated from the basin...
The environment and human health; USGS science for solutions
Water Resources Division, U.S. Geological Survey
2001, Fact Sheet 054-01
Emerging infectious diseases, ground-water contamination, trace-metal poisoning...environmental threats to public health the world over require new solutions. Because of an increased awareness of the issues, greater cooperation among scientific and policy agencies, and powerful new tools and techniques to conduct research, there is new hope that complex ecological health problems...
Water-level altitudes in wells completed in the Jasper aquifer, greater Houston area, Texas, Spring 2000
L.S. Coplin
2001, Open-File Report 2001-147
This report, prepared in cooperation with the Harris-Galveston Coastal Subsidence District, presents a map showing the approximate water-level altitudes in spring 2000 in wells completed in the Jasper aquifer (back of page). The most recent previously published water-level-altitude map for the Jasper aquifer in the region is by Popkin (1971)....
Shallow ground-water quality adjacent to burley tobacco fields in northeastern Tennessee and southwestern Virginia, spring 1997
G.C. Johnson, J. F. Connell
2001, Water-Resources Investigations Report 2001-4009
In 1994, the U.S. Geological Survey began an assessment of the upper Tennessee River Basin as part of the National Water-Quality Assessment (NAWQA) Program. A ground-water land-use study conducted in 1996 focused on areas with burley tobacco production in northeastern Tennessee and southwestern Virginia. Land-use studies are designed to focus...
An estimate of chemical loads from ground water to the Grand Calumet River and Indiana Harbor Canal, northwestern Indiana
Timothy C. Willoughby, Qaadir A. Siddeeq
2001, Water-Resources Investigations Report 2001-4020
Chemical loads from ground water to the Grand Calumet River and the Indiana Harbor Canal in northwestern Indiana were estimated to aid in determining the total maximum daily load. Data from two previous studies, completed in 1987 and 1993, were used to compute loads. The first study included a ground-water-flow...
Effects of storm-sampling frequency on estimation of water-quality loads and trends in two tributaries to Chesapeake Bay in Virginia
L.A. Sprague
2001, Water-Resources Investigations Report 2001-4136
Annual loads and flow-adjusted concentration trends were estimated by use of water-quality and streamflow data collected from 1990 through 1999 at monitoring stations on two tributaries to Chesapeake Bay in Virginia—James River at Cartersville, Va., and Rappahannock River near Fredericksburg, Va. The effects of storm-sampling frequency on the accuracy and...
Low-Flow Characteristics and Discharge Profiles for Selected Streams in the Cape Fear River Basin, North Carolina, Through 1998
J.C. Weaver, B.F. Pope
2001, Water-Resources Investigations Report 2001-4094
An understanding of the magnitude and frequency of low-flow discharges is an important part of evaluating surface-water resources and planning for municipal and industrial economic expansion. Low-flow characteristics are summarized in this report for 67 continuous-record gaging stations and 121 partial-record measuring sites in the Cape Fear River Basin of...
Effects of water withdrawals on streamflow in the Ipswich River basin, Massachusetts
Water Resources Division, U.S. Geological Survey
2001, Fact Sheet 160-00
Ground-water levels and water-quality data for wells in the Spring Creek area near Arnold Air Force Base, Tennessee, April and May 2000
Shannon D. Williams, Robert A. Aycock
2001, Open-File Report 2001-150
Arnold Air Force Base (AAFB) occupies about 40,000 acres in Coffee and Franklin Counties, Tennessee. Numerous site-specific ground-water contamination investigations have been conducted at designated solid waste management units (SWMU?s) at AAFB. Several synthetic volatile organic compounds (VOC?s), primarily chlorinated solvents, have been identified in groundwater samples collected from monitoring...
Selected findings and current perspectives on urban and agricultural water quality by the National Water-Quality Assessment Program
Water Resources Division, U.S. Geological Survey
2001, Fact Sheet 047-01
Studies by the USGS National Water-Quality Assessment (NAWQA) program in the last decade describe water-quality conditions in nearly 120 agricultural and 35 urban watersheds ('urban' primarily refers to residential and commercial development over the last 50 years). The findings show that for both urban and agricultural areas, nonpoint chemical contamination...
Effects of remedial grouting on the ground-water flow system at Red Rock Dam near Pella, Iowa
S. Mike Linhart, Bryan D. Schaap
2001, Water-Resources Investigations Report 2000-4231
Previous studies have shown direct evidence of under-seepage at Red Rock Dam on the Des Moines River near Pella, Iowa. Underseepage is thought to occur primarily on the northeast side of the dam in the lower bedrock of the St. Louis Limestone, which consists of discontinuous basal evaporite beds and...
Analysis of water levels in the Frenchman Flat area, Nevada Test Site
D.J. Bright, S.A. Watkins, B.A. Lisle
2001, Water-Resources Investigations Report 2000-4272
Analysis of water levels in 21 wells in the Frenchman Flat area, Nevada Test Site, provides information on the accuracy of hydraulic-head calculations, temporal water-level trends, and potential causes of water-level fluctuations. Accurate hydraulic heads are particularly important in Frenchman Flat where the hydraulic gradients are relatively flat (less than...
Soil gas studies along the Trans-Challis fault system near Idaho City, Boise County, Idaho
J. H. McCarthy, T. H. Kiilsgaard
2001, Bulletin 2064-LL
Soil gases were sampled along several traverses that cross the Trans-Challis fault system in central Idaho. Anomalous carbon dioxide, hydrogen, oxygen, hydrocarbon, and sulfur gas concentrations coincide with faults and known mineralized areas. Anomalies in areas not known to be mineralized may reflect undiscovered mineral deposits or concealed faults. Soil...
Evaluation of the Liu model for predicting rainfall interception in forests world-wide
Shu-Guang Liu
2001, Hydrological Processes (15) 2341-1360
Simple but effective models are needed for the prediction of rainfall interception under a full range of environmental and management conditions. The Liu model was validated using data published in the literature and was compared with two leading models in the literature: the Rutter and the Gash models. The Liu...
Geologic map of the Keweenaw Peninsula and adjacent area, Michigan
W.F. Cannon, S. W. Nicholson
2001, IMAP 2696
A Microsoft Windows version of the MARK3 Monte Carlo resource simulator
Joseph S. Duval
2001, Open-File Report 2000-415
This publication includes a version of the MARK3 Monte Carlo resource simulator that will run under Microsoft Windows 98, NT, and 2000. The disc also includes grade and tonnage information and related deposit model files that allow the user to calculate probability curves for mineral resources. A total of 113...
Hydrogeology, model description, and flow analysis of the Mississippi River alluvial aquifer in northwestern Mississippi
J. K. Arthur
2001, Water-Resources Investigations Report 2001-4035
The Mississippi River alluvial aquifer underlies a 7,000-square-mile area of the Mississippi River alluvial plain in northwestern Mississippi, an area locally known as the Delta. The alluvial aquifer is the most heavily pumped aquifer in Mississippi, and wells yielding more than 2,000 gallons per minute are common. About 98 percent...
Map Showing Slope Failures and Slope-Movement-Prone Areas in Vermont
C.A. Baskerville, G.C. Ohlmacher
2001, IMAP 2682
Bedrock geologic map of the Saxtons River 7.5' x 15' quadrangle, Windham and Windsor counties, Vermont
N. M. Ratcliffe, T. R. Armstrong
2001, IMAP 2636
No abstract available....
