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Page 4201, results 105001 - 105025

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Geohydrology and digital simulation of the ground-water flow system in the Umatilla Plateau and Horse Heaven Hills area, Oregon and Washington
A. Davies-Smith, E.L. Bolke, C. A. Collins
1988, Water-Resources Investigations Report 87-4268
The Columbia Plateau is underlain by massive basalt flows, with a composite thickness of about 10,000 ft. Structural features within the study area include a series of anticline-syncline pairs. The main avenues of groundwater movement in the basalt are the interflow zone between basalt flows. Individual interflow zones may be...
Sediment loads, discharges, and yields in the East Branch Mahoning Creek basin, Clearfield and Jefferson Counties, Pennsylvania, June 1979 through September 1981
C. A. Loper, K. L. Wetzel
1988, Water-Resources Investigations Report 85-4213
Rainfall, streamflow, and sediment discharge data were collected from the East Branch Mahoning Creek basin from June 1979 through September 1981 to evaluate sediment discharges from an area in which erosion and sediment controls were being used on surface mined areas. Sediment yields from the basin averaged 144 tons/sq mi/year....
Assessment of ground-water contamination in the alluvial aquifer near West Point, Kentucky
M. A. Lyverse, M.D. Unthank
1988, Water-Resources Investigations Report 88-4166
Well inventories, water level measurements, groundwater quality samples, surface geophysical techniques (specifically, electromagnetic techniques), and test drilling were used to investigate the extent and sources of groundwater contamination in the alluvial aquifer near West Point, Kentucky. This aquifer serves as the principal source of drinking water for over 50,000 people....
Reassessment of the Georgetown limestone as a hydrogeologic unit of the Edwards Aquifer, Georgetown area, Texas
L. F. Land, M.E. Dorsey
1988, Water-Resources Investigations Report 88-4190
The Edwards aquifer consists of geologic units known as the Comanche Peak (oldest) and Edwards Limestones, Kiamichi Formation, and Georgetown Limestone. The Edwards Limestone is the main water-bearing zone. The shallow geologic units dip to the east-southeast at a slope of 50 to 100 feet per mile in the Georgetown...
Potential effects of surface coal mining on the hydrology of the upper Otter Creek-Pasture Creek area, Moorhead coal field, southeastern Montana
N. E. McClymonds, J. A. Moreland
1988, Water-Resources Investigations Report 88-4187
The combined upper Otter Creek-Pasture Creek area, south of Ashland, Montana, contains large reserves of Federal coal for potential lease sale. A hydrologic study was conducted in the area to describe existing hydrologic systems and generalized groundwater quality, to assess potential effects of surface mining on local water resources, and...
Methods to determine transit losses for return flows of transmountain water in Fountain Creek between Colorado Springs and the Arkansas River, Colorado
Gerhard Kuhn
1988, Water-Resources Investigations Report 87-4119
Methods were developed by which transit losses could be determined for transmountain return flows in Fountain Creek between Colorado Springs, Colorado, and its confluence with the Arkansas River. The study reach is a complex hydrologic system wherein a substantially variable streamflow interacts with an alluvial aquifer. The study approach included:...
Recharge to the Eagle Valley ground-water basin by streamflow in Vicee Canyon, west-central Nevada
D. K. Maurer, J.M. Fischer
1988, Water-Resources Investigations Report 88-4158
Recharge to groundwater could be increased by adding imported water to natural surface water flow in Vicee Canyon, in Eagle Valley, Nevada, where municipal pumping has caused as much as 50 ft of water level decline since 1972. Measurements of infiltration rates, percolation rates, and hydraulic conductivity indicate that the...
Nomenclature of regional hydrogeologic units of the Southeastern Coastal Plain aquifer system
J. A. Miller, R.A. Renken
1988, Water-Resources Investigations Report 87-4202
Clastic sediments of the Southeastern Coastal Plain aquifer system can be divided into four regional aquifers separated by three regional confining units. The four regional aquifers have been named for major rivers that cut across their outcrop areas and expose the aquifer materials. From youngest to oldest, the aquifers are...
Estimated Use of Water in the United States in 1985
Wayne B. Solley, Charles F. Merk, Robert R. Pierce
1988, Circular 1004
Water withdrawals in the United States during 1985 were estimated to average 399,000 million gallons per day (Mgal/d) of freshwater and saline water for offstream uses--10 percent less than the 1980 estimate. Average per-capita use for all offstream uses was 1,650 gallons per day (gal/d) of freshwater and saline water...
Low-flow profiles of the Tallapoosa River and tributaries in Georgia
R.F. Carter, E. H. Hopkins, H.A. Perlman
1988, Water-Resources Investigations Report 88-4050
Low flow information is provided for use in an evaluation of the capacity of streams to permit withdrawals or to accept waste loads without exceeding the limits of State water quality standards. The report is the fourth in a series of reports presenting the results of a low flow study...