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Page 2037, results 50901 - 50925

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Potential effects of surface coal mining on the hydrology of the Corral Creek area, Hanging Woman Creek coal field, southeastern Montana
N. E. McClymonds
1984, Water-Resources Investigations Report 83-4260
The Corral Creek area of the Hanging Woman Creek coal field, 9 miles east of the Decker coal mines near the Tongue River, contains large reserves of Federal coal that have been identified for potential lease sale. A hydrologic study was conducted in the area to describe existing hydrologic systems...
Compilation of data collected and derived for water years 1980 and 1981 for the purpose of water-quality modeling of the lower Ouachita River and selected tributaries, south-central Arkansas
J. C. Petersen, E. E. Morris
1984, Open-File Report 84-727
This report represents water-quality, sediment oxygen demand, phytoplankton, periphyton, bacteria, instantaneous and mean-daily discharge, stream geometry, time of travel, reaeration data and other water quality collected on the lower Ouachita River (from just upstream of Little Missouri River to Lock and Dam 6), West Two Bayou, Smackover Creek, Haynes Creek...
Maps to estimate average streamflow and headwater limits for streams in U.S. Army Corps of Engineers, Mobile District, Alabama and adjacent states
George H. Nelson Jr.
1984, Water-Resources Investigations Report 84-4274
U.S. Army Corps of Engineers permits are required for discharges of dredged or fill-material downstream from the ' headwaters ' of specified streams. The term ' headwaters ' is defined as the point of a freshwater (non-tidal) stream above which the average flow is less than 5 cu ft/s. Maps...
Occurrence of uranium in ground water in the vicinity of the U.S. Department of Energy Feed Materials Production Center, Fernald, Ohio
A. C. Sedam
1984, Open-File Report 85-99
Process wastes are stored on site in rubber-lined and clay-lined pits and in large tanks at the U.S. Department of Energy Feed Materials Production Center (FMPC), where purified uranium and uranium compounds are produced. Water samples collected from off-site domestic and commercial wells in December 1981 and in August 1982,...
Application of the U.S. Geological Survey's precipitation-runoff modeling system to the Prairie Dog Creek basin, southeastern Montana
L. E. Cary
1984, Water-Resources Investigations Report 84-4178
The U.S. Geological Survey 's precipitation-runoff modeling system was tested using 2 year 's data for the daily mode and 17 storms for the storm mode from a basin in southeastern Montana. Two hydrologic response unit delineations were studied. The more complex delineation did not provide superior results. In this...
Ground-water-quality appraisal of sand-plain aquifers in Hubbard, Morrison, Otter Tail, and Wadena Counties, Minnesota
C. F. Myette
1984, Water-Resources Investigations Report 84-4080
Water samples were collected periodically from 124 wells completed in sand-plain aquifers in Hubbard, Morrison, Otter Tail, and Wadena Counties, Minnesota, to determine baseline water quality, provide data for evaluation of trends, and to investigate seasonal variations in concentrations of selected chemical constituents during a 3-year study that began in...
Runoff and water-quality characteristics of surface-mined lands in Illinois
Timothy P. Brabets
1984, Water-Resources Investigations Report 83-4265
Seven watersheds--three in western Illinois (Fulton County), two in south-western Illinois (St. Clair County), and two in southern Illinois (Williamson County)--were selected to assess the effect of surface mining on the quality and quantity of surface runoff. Each area had one site draining an unmined basin and a nearby site(s)...
Hydrology and land use in Van Buren County, Michigan
T. R. Cummings, F. R. Twenter, D. J. Holtschlag
1984, Water-Resources Investigations Report 84-4112
This report gives the results of an investigation to determine the chemical and physical characteristics of ground and surface water in Van Buren County and to relate these characteristics to the agricultural use of land. Chemical inputs to the hydrologic system, including those from precipitation, animal wastes, septic tanks, and...
Projected effects of ground-water withdrawals in the Arkansas River Valley, 1980-99, Hamilton and Kearny Counties, southwestern Kansas
L. E. Dunlap, Richard J. Lindgren, J. E. Carr
1984, Water-Resources Investigations Report 84-4082
A study was made, in cooperation with the Kansas State Board of Agriculture, to determine the effects that additional ground-water development would have on streamflow and water levels on an area along the Arkansas River in Hamilton and Kearny Counties, southwestern Kansas. A computer model was used to simulate the...
Water resources data, Georgia, water year 1983
W.R. Stokes, T.W. Hale, J. L. Pearman, G. R. Buell
1984, Water Data Report GA-83-1
Water resources data for the 1983 water year for Georgia consists of records of stage, discharge, and water quality of streams; stage and contents of lakes and reservoirs; and ground-water levels. This report contains discharge records of 104 gaging stations; stage for 11 gaging stations; stage and contents for 17...
Application of the conjugate-gradient method to ground-water models
T.A. Manteuffel, D.B. Grove, Leonard F. Konikow
1984, Water-Resources Investigations Report 83-4009
The conjugate-gradient method can solve efficiently and accurately finite-difference approximations to the ground-water flow equation. An aquifer-simulation model using the conjugate-gradient method was applied to a problem of ground-water flow in an alluvial aquifer at the Rocky Mountain Arsenal, Denver, Colorado. For this application, the accuracy and efficiency of the...
Water resources and potential hydrologic effects of oil-shale development in the southeastern Uinta Basin, Utah and Colorado
K.L. Lindskov, B. A. Kimball
1984, Professional Paper 1307
Proposed oil-shale mining in northeastern Utah is expected to impact the water resources of a 3,000-square-mile area. This report summarizes a comprehensive hydrologic investigation of the area which resulted in 13 published reports. Hydrologic information obtained during 1974-80 was used to evaluate the availability of water and to evaluate potential...
Water-quality characteristics of urban runoff and estimates of annual loads in the Tampa Bay area, Florida, 1975-80
M. A. Lopez, R.F. Giovannelli
1984, Water-Resources Investigations Report 83-4181
Rainfall, runoff, and water quality data were collected at nine urban watersheds in the Tampa Bay area from 1975 to 1980. Watershed drainage area ranged from 0.34 to 0.45 sq mi. Land use was mixed. Development ranged from a mostly residential watershed with a 19% impervious surface, to a commercial-residential...
Quality-assurance data for routine water analysis in the laboratories of the US Geological Survey for water-year 1983
D.B. Peart, Nancy Thomas
1984, Water-Resources Investigations Report 84-4234
The U.S. Geological Survey maintains a quality-assurance program based on the analysis of reference samples for its two water-analysis laboratories located in Atlanta, Georgia, and Denver, Colorado. Reference samples containing selected inorganic constituents are prepared at the U.S. Geological Survey 's Ocala, Florida office and disguised as routine samples ,...
The ground-water system and simulated effects of ground-water withdrawals in northern Utah Valley, Utah
D.W. Clark
1984, Water-Resources Investigations Report 85-4007
The effects of withdrawals from the principal ground-water reservoir in northern Utah Valley, Utah, were projected by means of a three-dimensional, finite-difference, digital-computer model, which was constructed to study and simulate the ground-water system. The model was calibrated against (1) water levels measured in 1947, which were assumed to represent...
Magnitude and frequency of floods from urban streams in Leon County, Florida
M.A. Franklin, G.T. Losey
1984, Water-Resources Investigations Report 84-4004
Techniques are provided for estimating flood magnitudes for urban-flow streams in Leon County, Florida, for recurrence intervals of 2, 5, 10, 25, 50, 100, and 500 years. Synthetic flood peaks were generated by using a calibrated lumped-parameter rainfall-runoff model, pan evaporation data from Milton, Florida, and long-term unit rainfall records...