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Page 187, results 4651 - 4675

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Hydrogeology of the surficial aquifer system, Dade County, Florida
J.E. Fish, M.T. Stewart
1991, Water-Resources Investigations Report 90-4108
An investigation of the surficial aquifer system in Dade County, begun in 1983, is part of a regional study of the aquifer system in southeastern Florida. Test drilling for lithologic samples, flow measurements during drilling, aquifer testing, and analyses of earlier data permitted delineation of the hydraulic conductivity distribution (on...
Wisconsin: A summary of cooperative water-resources investigations 1991
Water Resources Division, U.S. Geological Survey, Wisconsin Department of Natural Resources
1991, Report
The objectives of this study are to provide continuous discharge records for selected rivers at specific sites to supply the needs for regulation, analytical studies, definition of statistical properties, trends analysis, determination of the occurrence, and distribution of water in streams for planning. The project is also designed to determine...
Hydrologic provinces of Michigan
S. J. Rheaume
1991, Water-Resources Investigations Report 91-4120
This report presents the results of a study by the U.S. Geological Survey, in cooperation with the Michigan Department of Natural Resources, Geological Survey Division, to describe the statewide hydrologic variations in Michigan's water resources. Twelve hydrologic provinces, which are based on similarities in aquifer lithology, yield, recharge, and ground-water-...
Geochemical relations and distribution of selected trace elements in ground water of the northern part of the western San Joaquin Valley, California
Neil M. Dubrovsky, John M. Neil, Mary C. Welker, Kristin D. Evenson
1991, Water Supply Paper 2380
Water samples were collected from 44 wells in the northern part of the western San Joaquin Valley, California, between March and July 1985 to assess the geochemical relations and distribution of major ions and selected trace-element concentrations in ground water of the area. The ground-waterflow system consists of a semiconfined...
Methods for estimating monthly mean concentrations of selected water-quality constituents for stream sites in the Red River of the North basin, North Dakota and Minnesota
R. S. Guenthner
1991, Water-Resources Investigations Report 91-4086
Future development of the Garrison Diversion Unit may divert water from the Missouri River into the Sheyenne River and the Red River of the North for municipal and industrial use. The U.S. Bureau of Reclamation's Canals, Rivers, and Reservoirs Salinity Accounting Procedures model can be used to predict the effect...
The computer program estimate trend (ESTREND), a system for the detection of trends in water-quality data
Terry L. Schertz, Richard B. Alexander, Dane J. Ohe
1991, Water-Resources Investigations Report 91-4040
Computerized statistical and graphical procedures were developed for use in U.S. Geological Survey (USGS) investigations of trend in stream water-quality data. These procedures, identified as EStimate TREND (ESTREND), are described in this paper to assist USGS investigators involved in multiple-station studies of water-quality trends. Additional discussion focuses on certain statistical...
Documentation of a computer program to simulate aquifer-system compaction using the modular finite-difference ground-water flow model
S. A. Leake, David E. Prudic
1991, Techniques of Water-Resources Investigations 06-A2
Removal of ground water by pumping from aquifers may result in compaction of compressible fine-grained beds that are within or adjacent to the aquifers. Compaction of the sediments and resulting land subsidence may be permanent if the head declines result in vertical stresses beyond the previous maximum stress. The process...
A pilot study for delineation of areas contributing water to wellfields at Jackson, Tennessee
R. E. Broshears, J. F. Connell, N. C. Short
1991, Water-Resources Investigations Report 89-4201
The U.S. Geological Survey, in cooperation with the Tennessee Department of Health and Environment, Division of Groundwater Protection, and the Jackson Utility Division, conducted a pilot study to determine data needs and the applicability of four methods for the delineation of wellhead protection areas. Jackson Utility Division in Jackson, Madison...
Analysis of the ground-water flow system, geochemistry, and underseepage in the vicinity of the Red Rock Dam near Pella, Iowa
K.J. Lucey
1991, Water-Resources Investigations Report 91-4092
The U.S. Army Corps of Engineers operates the Red Rock Dam on the Des Moines River in Marion County, Iowa. The dam consists of a gravity concrete control structure between two earthen embankments and has an impoundment storage capacity of 1,700,000 acre-feet. Since the impoundment of Lake Red Rock commenced...
Hydrology of the Texas Gulf Coast aquifer systems
Paul D. Ryder, Ann F. Ardis
1991, Open-File Report 91-64
A complex, multilayered ground-water flow system exists in the Coastal Plain sediments of Texas. The Tertiary and Quaternary clastic deposits have an areal extent of 114,000 square miles onshore and in the Gulf of Mexico. Two distinct aquifer systems are recognized within the sediments, which range in thickness from a...
Hydrogeology and ground-water flow in the carbonate rocks of the Little Lehigh Creek basin, Lehigh County, Pennsylvania
R. A. Sloto, L.D. Cecil, L.A. Senior
1991, Water-Resources Investigations Report 90-4076
The Little Lehigh Creek basin is underlain mainly by a complex assemblage of highly-deformed Cambrian and Ordovician carbonate rocks. The Leithsville Formation, Allentown Dolomite, Beekmantown Group, and Jacksonburg Limestone act as a single hydrologic unit. Ground water moves through fractures and other secondary openings and generally is under water-table conditions....
Low-flow characteristics of streams in Virginia
Donald C. Hayes
1991, Water Supply Paper 2374
Streamflow data were collected and low-flow characteristics computed for 715 gaged sites in Virginia Annual minimum average 7-consecutive-day flows range from 0 to 2,195 cubic feet per second for a 2-year recurrence interval and from 0 to 1,423 cubic feet per second for a 10-year recurrence interval. Drainage areas range...
Review of water demand and water utilization studies for the Provo River drainage basin, and review of a study of the effects of the proposed Jordanelle Reservoir on seepage to underground mines, Bonneville unit of the central Utah project
K.M. Waddell, G. W. Freethey, D. D. Susong, G. E. Pyper
1991, Open-File Report 91-514
Problem: Questions have been raised concerning the adequacy of available water to fulfill the needs of storage, exchanges, diversions, and instream flows, pursuant to existing water rights in the Provo River drainage basin part of the Bonneville Unit. Also, concern has been expressed about the potential for seepage of water from...
Flood characteristics of Mississippi streams
M. N. Landers, K.V. Wilson Jr.
1991, Water-Resources Investigations Report 91-4037
Flood magnitudes for selected recurrence intervals from 2 to 500 years were determined for 330 gaged sites in the study area where annual peak-flow records have been collected. The principal study area is Mississippi; however, selected data collected in adjoining States on streams draining into or from Mississippi are also...
Geology and water resources of Owens Valley, California
Kenneth J. Hollett, Wesley R. Danskin, William F. McCaffrey, Caryl L. Walti
1991, Water Supply Paper 2370-B
Owens Valley, a long, narrow valley located along the east flank of the Sierra Nevada in east-central California, is the main source of water for the city of Los Angeles. The city diverts most of the surface water in the valley into the Owens River-Los Angeles Aqueduct system, which transports...
Water and tritium movement through the unsaturated zone at a low-level radioactive-waste disposal site near Sheffield, Illinois, 1981-85
P.C. Mills, R. W. Healy
1991, Open-File Report 89-271
The movement of water and tritium through the unsaturated zone was studied at a low-level radioactive-waste disposal site near Sheffield, Bureau County, Illinois, from 1981 to 1985. Water and tritium movement occurred in an annual, seasonally timed cycle; recharge to the saturated zone generally occurred in the spring and early...
Geohydrology and quality of water in aquifers in Lucas, Sandusky, and Wood counties, northwestern Ohio
K. J. Breen, D.H. Dumouchelle
1991, Water-Resources Investigations Report 91-4024
The hydrology and quality of ground water were evaluated for the surficial sand and carbonate aquifers in northwestern Ohio. A locally important surficial sand aquifer in western Lucas County was evaluated on the basis of data from 10 wells completed in undeveloped and developed areas. The carbonate aquifer in Silurian...
Water-resources data for North Fork Bens Creek, Somerset County, Pennsylvania, August 1983 through September 1988
Emitt C. Witt III
1991, Open-File Report 89-584
Basin and climatological characteristics, quality-assurance data and results, and water-resources data for North Fork Bens Creek, in Somerset County, Pennsylvania are available from August 1983 through September 1988. The lowest temperature (-30. 0 C) was recorded during January 1985, and the highest temperature (36.7 C) was recorded during July 1988....
Low-flow characteristics of Kentucky streams
K.J. Ruhl, G. R. Martin
1991, Water-Resources Investigations Report 91-4097
Low-flow characteristics were determined for 136 continuous-record and 212 low-flow partial-record streamflow gaging stations in Kentucky. Low-flow frequency curves were developed for the continuous-record gaging stations from daily mean streamflows for unregulated periods of 10 years or more. Through graphical correlation with data from one or more of the continuous-record...
Hydrology and potential effects of mining in the Quitchupah and Pines coal-lease tracts, central Utah
Susan A. Thiros, G. E. Cordy
1991, Water-Resources Investigations Report 90-4084
Bydrologic data were collected for the proposed Quitchupah and Pines coal-lease tracts in Sevier and Bnery Counties, Utah, in order to describe the hydrology and potential effects of mining on the hydrologic system. The Quitchupah and Pines coal-lease tracts are near the Southern Utah Fuel Company coal mine in an...
Ground-water levels, flow, and quality in northwestern Elkhart County, Indiana, 1980-89
R.F. Duwelius, C.A. Silcox
1991, Water-Resources Investigations Report 91-4053
Ground-water data were collected in northwestern Elkhart County, Indiana, from 1980 through 1989 to monitor hydrologic conditions and to provide information necessary for waterresources managers to evaluate the ground-water resources in this area. The area of study includes a closed industrial landfill and several areas of industrial and municipal pumping....
Water resources data, Michigan, water year 1990
S. P. Blumer, W.W. Larson, R. J. Minnerick, C.R. Whited, R.L. LeuVoy
1991, Water Data Report MI-90-1
Water resources data for the 1990 water year for Michigan consists of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and water levels and water temperature of ground water. This report contains discharge records for 146 streamflow-gaging stations; stage only records for...
Marion Peak quadrangle, Fresno County, California— Analytic data
James Gregory Moore
1991, Bulletin 1986
The Marion Peak 15-minute quadrangle includes about 620 km2 on the west slope of the Sierra Nevada in Fresno County, California, between 36°45' and 37°00' N. latitude and 118°30' and 118°45 W. longitude. This report supplements the geologic map of the Marion Peak quadrangle by providing modal and chemical analyses...
Geochemistry of ground water in alluvial basins of Arizona and adjacent parts of Nevada, New Mexico, and California
Frederick N. Robertson
1991, Professional Paper 1406-C
Chemical and isotope analyses of ground water from 28 basins in the Basin and Range physiographic province of Arizona and parts of adjacent States were used to evaluate ground-water quality, determine processes that control ground-water chemistry, provide independent insight into the hydrologic flow system, and develop information transfer. The area...