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....
Relations of changes in wastewater-treatment practices to changes in stream-water quality during 1978-88 in the Chicago area, Illinois, and implications for regional and national water-quality assessments
P. J. Terrio
1994, Water-Resources Investigations Report 93-4188
A study in the upper Illinois River Basin defined relations between changes in wastewater-treatment practices and changes in stream-water quality on the basis of available information. These relations were examined for five large wastewater-treatment plants in the Chicago area, Illinois. At the three largest treatment plants, two major changes in...
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...
Analytical data, sample localities, and basic statistical data for stream-sediment, heavy-mineral-concentrate, magnetite, and rock samples collected from the Goshute Indian Reservation, Nevada and Utah
R. G. Eppinger, J. H. Bullock, Lee-Ann Bradley, P. L. Hageman, D.M. Hopkins, A.H. Love, J. M. Motooka, C.J. Nutt, B. H. Roushey, E. P. Welsch
1994, Open-File Report 94-270-B
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...
Estimated freshwater withdrawals in Texas, 1990
Dee L. Lurry
1994, Water-Resources Investigations Report 93-4190
This report presents 1990 freshwater withdrawal estimates for Texas by source and category. Withdrawal source is either ground water or surface water. Withdrawal categories include: self-supplied irrigation, thermoelectric-power generation, water supply, industrial and mining, and other (domestic, commercial, livestock). Withdrawal data are aggregated by county, major aquifer, and principal river...
A technique for estimating ground-water levels at sites in Rhode Island from observation-well data
Roy S. Socolow, Michael H. Frimpter, Michael Turtora, Richard W. Bell
1994, Water-Resources Investigations Report 94-4138
Estimates of future high, median, and low ground- water levels are needed for engineering and architectural design decisions and for appropriate selection of land uses. For example, the failure of individual underground sewage-disposal systems due to high ground-water levels can be prevented if accurate water-level estimates are available. Estimates of...
Estimation of peak-frequency relations, flood hydrographs, and volume-duration-frequency relations of ungaged small urban streams in Ohio
James M. Sherwood
1994, Water Supply Paper 2432
Methods and step-by-step examples are presented to estimate (1) peak-frequency relations, (2) flood hydrographs and volumes, and (3) volume-duration frequency relations of small urban streams in Ohio. The methods were developed to assist planners in the design of hydraulic structures for which hydrograph routing is required or where the temporary...
Listing of geochemical data and assessment of variability for soils and alfalfa of the Uncompahgre Project Area, Colorado
J.G. Crock, K. C. Stewart, R. C. Severson
1994, Open-File Report 94-580
Hazard of earthquake-induced lateral-spread ground failure on the Central California Coast modeled from earth-science map data in a geographic information system
Richard J. Pike, R. L. Bernknopf, J. C. Tinsley, R. K. Mark
1994, Open-File Report 94-662
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
Topographic data requirements for EOS global change research
Dean B. Gesch
1994, Open-File Report 94-626
This document is a result of Earth Observing System Data and Information System (EOSDIS) Version 0 activities of the Land Processes Distributed Active Archive Center at the U.S. Geological Survey's EROS Data Center. A relatively small part of the Version 0 funding provided by NASA is used to address topographic...
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...
Geologic maps of the southwestern Puerto Rico Parguera to Guanica insular shelf
Jack Morelock, Elizabeth A. Winget, Carlos Goenaga
1994, IMAP 2387
These maps describe the sediments and sedimentary environment of the southwestern Puerto Rico shelf (index). In addition to presenting new data, the maps summarize earlier geological investigations. There are two morphological zones separated along a line extending southward from Punta Jorobaflo. The Parguera shelf extends from this line to the...
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...
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...
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...
Nutrients, suspended sediment, and pesticides in waters of the Red River of the North Basin, Minnesota, North Dakota, and South Dakota, 1970-90
L. H. Tornes, M. E. Brigham
1994, Water-Resources Investigations Report 93-4231
Available data on nutrients (phosphorus and nitrogen), suspended sediment, and pesticides in the Red River of the North Basin, a study unit under the U.S. Geological Survey National Water-Quality Assessment (NAWQA) Program, are reviewed. These data were collected by several agencies during 1970-90. Nutrient concentrations in surface water are higher...
Instrumentation, methods of flood-data collection and transmission, and evaluation of streamflow-gaging network in Indiana
D.R. Glatfelter, G.K. Butch
1994, Water-Resources Investigations Report 91-4051
Floods are the number one natural disaster in the Nation, based on loss of life and property. In Indiana, several major floods have occurred during this century. Flooding can occur at any time in any geographic area in Indiana. The degree of flooding can vary from a minor inconvenience to...
Estimation of Magnitude and Frequency of Floods for Streams on the Island of Oahu, Hawaii
Michael F. Wong
1994, Water-Resources Investigations Report 94-4052
This report describes techniques for estimating the magnitude and frequency of floods for the island of Oahu. The log-Pearson Type III distribution and methodology recommended by the Interagency Committee on Water Data was used to determine the magnitude and frequency of floods at 79 gaging stations that had 11 to...
Digital data for quantitative geochemistry of rocks from the Adelaide Mining District, Humboldt County, Nevada
Theresa M. Cookro
1994, Open-File Report 94-668
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 used to characterize the Management Systems Evaluation Area near Princeton, Minnesota, 1991
G. N. Delin, M.K. Landon, J.A. Lamb, J. L. Anderson
1994, Open-File Report 94-337
The Minnesota Management Systems Evaluation Area project is part of a multi-scale, inter-agency initiative to evaluate the effects of agricultural management systems on water quality in the midwest corn belt. The research area is located in the Anoka Sand Plain about 5 kilometers southwest of Princeton, Minnesota. The ground-water-quality monitoring...
Inventory of wells near a former waste-disposal site, Nashua, New Hampshire, June 1993
Sarah M. Flanagan
1994, Open-File Report 94-398
Domestic, public-supply, and observation wells near a former waste-disposal site along Gilson Road in Nashua, New Hampshire, were inventoried in June 1993. Data include hydrogeologic information on 13 domestic wells, 11 observation wells in an adjacent municipal landfill, 3 abandoned public-supply wells, 3 observation wells, and l test boring...
PRISM 8 degrees X 10 degrees North Hemisphere paleoclimate reconstruction; digital data
John A. Barron, Thomas M. Cronin, Harry J. Dowsett, Farley R. Fleming, Thomas R. Holtz Jr., Scott E. Ishman, Richard Z. Poore, Robert S. Thompson, Debra A. Willard
1994, Open-File Report 94-281
The PRISM 8?x10? data set represents several years of investigation by PRISM (Pliocene Research, Interpretation, and Synoptic Mapping) Project members. One of the goals of PRISM is to produce time-slice reconstructions of intervals of warmer than modern climate within the Pliocene Epoch. The first of these was chosen to be...
