Yields of selected constituents in base flow and stormflow in urban watersheds of Jefferson County, Kentucky, 1988-92
R. D. Evaldi, B.L. Moore
1994, Water-Resources Investigations Report 94-4065
Mean annual base-flow and stormflow yields of selected water-quality constituents from urban watersheds of Jefferson County, Kentucky, were estimated for 1988-92 to help describe the pro portions of constituent transport from point and nonpoint sources. Yield estimates were based on streamflow and water-quality data collected from a network of 25...
Comparison of vertical discretization techniques in finite-difference models of ground-water flow; example from a hypothetical New England setting
Philip T. Harte
1994, Open-File Report 94-343
Proper discretization of a ground-water-flow field is necessary for the accurate simulation of ground-water flow by models. Although discretiza- tion guidelines are available to ensure numerical stability, current guidelines arc flexible enough (particularly in vertical discretization) to allow for some ambiguity of model results. Testing of two common types of...
Salt budget for West Pond, Utah, April 1987 to June 1989
S.R. Wold, K.M. Waddell
1994, Water-Resources Investigations Report 93-4028
During operation of the West Desert pumping project, April 10. 1987, to June 30, 1989, data were collected as part of a monitoring program to evaluate the effects of pumping brine from Great Salt Lake into West Pond in northern Utah. The removal of brine from Great Sail was part...
Use of a precipitation-runoff model for simulating effects of forest management on streamflow in 11 small drainage basins, Oregon Coast Range
J. C. Risley
1994, Water-Resources Investigations Report 93-4181
The Precipitation-Runoff Modeling System (PRMS) model of the U.S. Geological Survey was used to simulate the hydrologic effects of timber management in 11 small, upland drainage basins of the Coast Range in Oregon. The coefficients of determination for observed and simulated daily flow during the calibration periods ranged from 0.92...
Hydrogeology, water quality, and potential for contamination of the Upper Floridan aquifer in the Silver Springs ground-water basin, central Marion County, Florida
G. G. Phelps
1994, Water-Resources Investigations Report 92-4159
The Upper Floridan aquifer, composed of a thick sequence of very porous limestone and dolomite, is the principal source of water supply in the Silver Springs ground-water basin of central Marion County, Florida. The karstic nature of the local geology makes the aquifer susceptible to contaminants from the land surface....
Hydrogeology and simulation of ground-water flow at Arnold Air Force Base, Coffee and Franklin counties, Tennessee
C.J. Haugh, E.N. Mahoney
1994, Water-Resources Investigations Report 93-4207
The U.S. Air Force at Arnold Air Force Base (AAFB), in Coffee and Franklin Counties, Tennessee, is investigating ground-water contamination in selected areas of the base. This report documents the results of a comprehensive investigation of the regional hydrogeology of the AAFB area. Three aquifers within the Highland Rim aquifer...
Computer simulation of storm runoff for three watersheds in Albuquerque, New Mexico
R. L. Knutilla, J.E. Veenhuis
1994, Water-Resources Investigations Report 94-4143
Rainfall-runoff data from three watersheds were selected for calibration and verification of the U.S. Geological Survey's Distributed Routing Rainfall-Runoff Model. The watersheds chosen are residentially developed. The conceptually based model uses an optimization process that adjusts selected parameters to achieve the best fit between measured and simulated runoff volumes and...
Application of a Geographic Information System for regridding a ground-water flow model of the Columbia Plateau Regional Aquifer System, Walla Walla River basin, Oregon-Washington
M.E. Darling, L.E. Hubbard
1994, Water-Resources Investigations Report 89-4179
Computerized Geographic Information Systems (GIS) have become viable and valuable tools for managing,analyzing, creating, and displaying data for three-dimensional finite-difference ground-water flow models. Three GIS applications demonstrated in this study are: (1) regridding of data arrays from an existing large-area, low resolution ground-water model to a smaller, high resolution grid;...
User's guide to revised method-of-characteristics solute-transport model (MOC--version 31)
Leonard F. Konikow, G.E. Granato, G.Z. Hornberger
1994, Water-Resources Investigations Report 94-4115
The U.S. Geological Survey computer model to simulate two-dimensional solute transport and dispersion in ground water (Konikow and Bredehoeft, 1978; Goode and Konikow, 1989) has been modified to improve management of input and output data and to provide progressive run-time information. All opening and closing of files are now done...
Hydrogeology of recharge areas and water quality of the principal aquifers along the Wasatch Front and adjacent areas, Utah
P.B. Anderson, D. D. Susong, S.R. Wold, V.M. Heilweil, R. L. Baskin
1994, Water-Resources Investigations Report 93-4221
The principal basin-fill aquifers in Cache Valley, the lower Bear River area, and along the Wasatch Front provide ground water to about 84 percent of the population of Utah. Recharge areas for the principal aquifers were mapped to provide information needed for the implementation of ground-water quality regulations and a...
Scour assessment at bridges from Flag Point to Million Dollar Bridge, Copper River Highway, Alaska
T. P. Brabets
1994, Water-Resources Investigations Report 94-4073
Twelve bridges are located along the Copper River Highway from Flag Point (Mile 27) to lhe Million Dollar Bridge (Mile 48). These bridges cross all or parts of the Copper River. Channel scour at these bridges was assessed by collecting and analyzing discharge and sediment data, analyzing aerial photography for...
A data input program (MFI) for the U.S. Geological Survey modular finite-difference ground-water flow model
Arlen W. Harbaugh
1994, Open-File Report 94-468
Flow and salinity in West Neck Creek, Virginia, 1989-92, and salinity in North Landing River, North Carolina, 1991-92
Jerad Bales, S. C. Skrobialowski
1994, Water-Resources Investigations Report 94-4067
Flow and salinity were monitored during 1989-92 in West Neck Creek, Virginia, which provides a direct hydraulic connection between the brackish waters of Chesapeake Bay and the relatively fresh waters of Currituck Sound. During the 308 days for which data were available, flow was to the south 64 percent of...
Calculation of a water budget and delineation of contributing sources to drainflows in the western San Joaquin Valley, California
John L. Fio
1994, Open-File Report 94-45
Geohydrologic data and a ground-water flow model were used to calculate a water budget and evaluate the contribution of regional groundwater flow to on-farm drainflow in a part of the western San Joaquin Valley, California. Regional ground-water flow is affected by the distribution of unconsolidated coarse- and fine-grained sediment. Predominantly...
Potential for, and possible effects of, artificial recharge in Carson Valley, Douglas County, Nevada
Douglas K. Maurer, Lorri A. Peltz
1994, Water-Resources Investigations Report 94-4126
Rapid population growth in Carson Valley, west- central Nevada, requires a dependable municipal water source. Artificial recharge of aquifers using available flow of the Carson River is one way to increase the amount of water in underground storage and maintain a dependable ground-water supply. Ground water can be artificially recharged...
Assessment of selected constituents in surface water of the upper Snake River basin, Idaho and western Wyoming, water years 1975-89
Gregory M. Clark
1994, Water-Resources Investigations Report 93-4229
In 1991, a water-quality investigation of the upper Snake River Basin was initiated as part of the U.S. Geological Survey's National Water-Quality Assessment Program. The initial task of the assessment was to compile and analyze available nutrient, suspended sediment, and pesticide data collected in the basin. For analysis of nutrients...
Relation of stream quality to streamflow, and estimated loads of selected water-quality constituents in the James and Rappahannock rivers near the fall line of Virginia, July 1988 through June 1990
D.L. Belval, J.P. Campbell, M. D. Woodside
1994, Water-Resources Investigations Report 94-4042
This report presents the results of a study by the U.S. Geological Survey, in cooperation with the Virginia Department of Environmental Quality-- Division of Intergovernmental Coordination to monitor and estimate loads of selected nutrients and suspended solids discharged to Chesapeake Bay from two major tributaries in Virginia. From July 1988...
Surface-water-quality assessment of the upper Illinois River Basin in Illinois, Indiana, and Wisconsin; fixed-station network and selected water-quality data for April 1987-September 1990
Daniel J. Sullivan, Stephen F. Blanchard
1994, Open-File Report 91-175
This report describes and presents the sampling design, methods, quality assurance methods and results, and information on how to obtain data collected at eight fixed stations in the upper Illinois River Basin as part of the pilot phase of the National Water-Quality Assessment program. Data were collected monthly from April...
Hydrogeology and hydrochemistry of dunes and wetlands along the southern shore of Lake Michigan, Indiana
Robert J. Shedlock, D.A. Cohen, T.E. Imbrigiotta, T.A. Thompson
1994, Open-File Report 92-139
The dunes and the wetlands along the southern shore of Lake Michigan are underlain by a complex aquifer system composed of unconsolidated glacial, lacustrine, and eolian deposits. Surficial dune, beach, and glacial lacustrine sands compose an extensive surficial aquifer. The underlying drift contains three major confined sand aquifers. Potentiometric...
Effects of ground-water chemistry and flow on quality of drainflow in the western San Joaquin Valley, California
John L. Fio, David A. Leighton
1994, Open-File Report 94-72
Chemical and geohydrologic data were used to assess the effects of regional ground-water flow on the quality of on-farm drainflows in a part of the western San Joaquin Valley, California. Shallow ground water beneath farm fields has been enriched in stable isotopes and salts by partial evaporation from the shallow...
Hydrogeologic and water-quality data from wells near the Hueco Bolson Recharge Project area, El Paso, Texas, 1990 and 1991
Robert D. Brock, Paul M. Buszka, Edward M. Godsy
1994, Open-File Report 94-329
Tertiary-treated wastewater currently (1991) is being injected into the Hueco bolson aquifer at a site in northeastern El Paso, Texas, to supplement the quantity of available freshwater. Hydrologic data were compiled and water-quality and bacterial data were collected from existing wells near the Hueco Bolson Recharge Project (HBRP) in August...
Traveltime and reaeration characteristics for a reach of the Rio Grande, Albuquerque, New Mexico, October 1991
S. D. Waltemeyer
1994, Water-Resources Investigations Report 94-4071
Traveltime characteristics were determined using stream-velocity data and tracer-dye data for a reach of the Rio Grande. Traveltimes determined by the stream-velocity method were virtually the same as those determined by the tracer-dye and tracer-gas technique. The mean velocity of the stream was 1.12 miles per hour at a flow...
Source code and ancillary data files for the MODPATH particles tracking package of the ground-water flow model MODFLOW
David W. Pollock
1994, Open-File Report 94-463
Geohydrology and water quality of stratified-drift aquifers in the lower Connecticut River basin, southwestern New Hampshire
R. B. Moore, C. D. Johnson, E.M. Douglas
1994, Water-Resources Investigations Report 92-4013
Stratified-drift aquifers discontinuously underlie 116 square miles of the Lower Connecticut River basin in southwestern New Hampshire, which has a total drainage area of 1,163 square miles. Saturated thicknesses of stratified drift within the study area are locally greater than 400 feet but generally are less. Transmissivities 1ocally exceeds 4,000...
Iodine-129 in the Snake River Plain aquifer at and near the Idaho National Engineering Laboratory, Idaho, 1990-91
L. J. Mann, T.M. Beasley
1994, Water-Resources Investigations Report 94-4053
From 1953 to 1990, an estimated 0.56 to 1.18 curies of iodine-129 were contained in wastewater generated by the Idaho Chemical Processing Plant (ICPP) at the Idaho National Engineering Laboratory. The waste- water was discharged directly to the Snake River Plain aquifer through a deep disposal well prior to February...
