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Water-quality assessment of the upper Snake River Basin, Idaho and western Wyoming — Summary of aquatic biological data for surface water through 1992
Terry R. Maret
1995, Water-Resources Investigations Report 95-4006
The 35,800-square-mile upper Snake River Basin in eastern Idaho and western Wyoming was one of 20 areas selected for water-quality study under the National Water-Quality Assessment Program. As part of the initial phase of the study, data were compiled to describe the current (1992) and historical aquatic biological conditions of...
Multichannel seismic-reflection profiling on the R/V Maurice Ewing during the Los Angeles Region Seismic Experiment (LARSE), California
Thomas M. Brocher, Robert W. Clayton, Kim D. Klitgord, Robert G. Bohannon, Ray Sliter, John K. McRaney, James V. Gardner, J.B. Keene
1995, Open-File Report 95-228
This report describes the acquisition of deep-crustal multichannel seismic-reflection data in the Inner California Borderland aboard the R/V Maurice Ewing, conducted in October 1994 as part of the Los Angeles Regional Seismic Experiment (LARSE). LARSE is a cooperative study of the crustal structure of southern California involving earth scientists from...
Estimated natural ground-water recharge, discharge, and budget for the Dixie Valley area, west-central Nevada
J. R. Harrill, L.B. Hines
1995, Water-Resources Investigations Report 95-4052
The Dixie Valley area includes seven valleys in west-central Nevada (Dixie, Fairview, Stingaree, Cowkick, Eastgate, Pleasant, and Jersey Valleys; total, 2,380 square miles). Dixie Valley receives surface-water and ground-water flow from Stingaree, Cowkick, Eastgate, Pleasant, and Jersey Valleys and subsurface flow from Fairview Valley, which is a topographically closed basin....
Transport and sources of sediment in the Missouri River between Garrison Dam and the headwaters of Lake Oahe, North Dakota, May 1988 through April 1991
Wayne R. Berkas
1995, Water-Resources Investigations Report 95-4087
Sediment data were collected on and along the Missouri River downstream from Garrison Dam during May 1988, May 1989, and April 1991 to characterize sediment transport in the river. Specific study objectives were to (1) identify erosional and depositional reaches during two steady-state low-flow periods and one steady-state high-flow period;...
Water-quality assessment of the Rio Grande Valley study unit, Colorado, New Mexico, and Texas -- Analysis of selected nutrient, suspended-sediment, and pesticide data
S. K. Anderholm, M.J. Radell, S. F. Richey
1995, Water-Resources Investigations Report 94-4061
This report contains a summary of data compiled from sources throughout the Rio Grande Valley study unit of the National Water-Quality Assessment program. Information presented includes the sources and types of water-quality data available, the utility of water-quality data for statistical analysis, and a description of recent water-quality conditions and...
Statistical summaries of surface-water hydrologic data collected in the Suwannee River Water Management District, Florida, 1906-93
M.A. Franklin, G. L. Giese, P.R. Mixson
1995, Open-File Report 94-709-W
Since 1906, hydrologic data have been collected systematically on streams and lakes in the Suwannee River Water Management District (SRWMD) by the U.S. Geological Survey (USGS), the SRWMD, and other agencies. Records of stream discharge and stream and lake stage in the SRWMD (fig. 1), collected largely in cooperation with...
Geohydrology of the Flints Pond Aquifer, Hollis, New Hampshire
Joseph D. Ayotte, Tracy H. Dorgan
1995, Open-File Report 95-363
Flints pond has been subjected to accelerated eutrophication as a result of watershed development (building of new homes and conversion of summer cottages into permanent homes) since the 1930's. Ground-water flow is the primary recharge and discharge mechanism for Flints Pond. The saturated thickness, transmissive properties, and altitude of the...
Results of geophysical surveys of glacial deposits near a former waste-disposal site, Nashua, New Hampshire
Joseph D. Ayotte, Tracy H. Dorgan
1995, Open-File Report 95-142
Geophysical investigations were done near a former waste-disposal site in Nashua, New Hampshire to determine the thickness and infer hydraulic characteristics of the glacial sediments that underlie the area. Approximately 5 miles of ground- penetrating radar (GPR) data were collected in the study area by use of dual-80 Megahertz antennas....
Modeling hexavalent chromium reduction in groundwater in field-scale transport and laboratory batch experiments
J.C. Friedly, J.A. Davis, D.B. Kent
1995, Water Resources Research (31) 2783-2794
A plausible and consistent model is developed to obtain a quantitative description of the gradual disappearance of hexavalent chromium (Cr(VI)) from groundwater in a small-scale field tracer test and in batch kinetic experiments using aquifer sediments under similar chemical conditions. The data exhibit three distinct timescales. Fast reduction occurs in...
Data from the Woodland land-subsidence monitoring station, Yolo County, California, water years 1988-92
M. E. Ikehara
1995, Open-File Report 94-494
A land-subsidence monitoring study was initiated in 1985 for the purpose of collecting data in Sacramento Valley, California, to document land-surface subsidence and to measure sediment compaction in response to ground-water pumping. Lithologic and geophysical logs obtained from the deeper of two boreholes drilled in 1987 near Woodland, California, are...
Quality of water and chemistry of bottom sediment in the Rillito Creek basin, Tucson, Arizona, 1992-93
Saeid Tadayon
1995, Water-Resources Investigations Report 95-4062
Physical and chemical data were collected from four surface-water sites, six ground-water sites, and two bottom-sediment sites during 1992-93. Specific conductance, hardness, alkalinity, and dissolved- solids concentrations generally were higher in ground water than in surface water. The median concentrations of dissolved major ions, with the exception of potassium, were...
Selected chemical characteristics and acute toxicity of urban stormwater, streamflow, and bed material, Maricopa County, Arizona
Thomas J. Lopes, Kenneth D. Fossum
1995, Water-Resources Investigations Report 95-4074
The chemistry and toxicity of urban stormwater, streamflow, and bed material in the Phoenix, Arizona, area were characterized to determine if urban stormwater could degrade the quality of streams. Toxic phases of stormwater (oil and grease, suspended solids, dissolved metals, and dissolved organics) were identified to aid water-quality managers minimize...
Biological and associated water-quality data for lower Olmos Creek and upper San Antonio River, San Antonio, Texas, March-October 1990
R. Lynn Taylor
1995, Open-File Report 95-103
Biological and associated water-quality data were collected from lower Olmos Creek and upper San Antonio River in San Antonio, Texas, during March-October 1990, the second year of a multiyear data-collection program. The data will be used to document water-quality conditions prior to implementation of a proposal to reuse treated wastewater...
Applying computer simulation models as learning tools in fishery management
Barry L. Johnson
1995, North American Journal of Fisheries Management (15) 736-747
Computer models can be powerful tools for addressing many problems in fishery management, but uncertainty about how to apply models and how they should perform can lead to a cautious approach to modeling. Within this approach, we expect models to make quantitative predictions but only after all model inputs have...
Pesticides in the atmosphere; distribution, trends, and governing factors
Michael S. Majewski, Paul D. Capel
1995, Open-File Report 94-506
A comprehensive review of existing literature on the occurrence and distribution of pesticides in the atmosphere of the United States and adjoining Canadian provinces showed that the atmosphere is an important part of the hydrologic cycle that acts to distribute and deposit pesticides in areas far removed from their application...
Use of a reactive gas transport model to determine rates of hydrocarbon biodegradation in unsaturated porous media
Arthur L. Baehr, Ronald J. Baker
1995, Water Resources Research (31) 2877-2882
A mathematical model is presented that simulates the transport and reaction of any number of gaseous phase constituents (e.g. CO2, O2, N2, and hydrocarbons) in unsaturated porous media. The model was developed as part of a method to determine rates of hydrocarbon biodegradation associated with natural cleansing at petroleum product...
Simulation of hydrodynamics and solute transport in the Neuse River estuary
Jeanne C. Robbins, Jerad Bales
1995, Open-File Report 94-511
An investigation was conducted to characterize flow, circulation, and transport in the Neuse River estuary, North Carolina. The study included a detailed field-measurement program and the calibration, validation, and application of a physically realistic numerical model of hydro- dynamics and transport through a 40-kilometer reach of the estuary. Water level,...
Water-quality assessment of the upper Illinois River Basin in Illinois, Indiana, and Wisconsin: Nutrients, dissolved oxygen, and fecal-indicator bacteria in surface water, April 1987 through August 1990
P. J. Terrio
1995, Water-Resources Investigations Report 95-4005
Data describing the presence, spatial distribution, and temporal variability of nutrients, dissolved oxygen, and fecal-indicator bacteria in surface water were collected from streams in the upper Illinois River Basin from 1987-90 as part of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) program. The largest concen- trations and loads of...