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Page 4733, results 118301 - 118325

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Regional Aquifer-System Analysis Program of the US Geological Survey; bibliography, 1978-86
J.B. Weeks, Ren Jen Sun
1987, Water-Resources Investigations Report 87-4138
The Regional Aquifer-System Analysis Program of the U.S. Geological Survey was initiated in 1978. The purpose of this program is to define the regional geohydrology and establish a framework of background information on geology, hydrology, and geochemistry of the Nation 's important aquifer systems. This information is needed to develop...
Cost effectiveness of the U.S. Geological Survey's stream-gaging program in Wisconsin
J.F. Walker, L.L. Osen, P.E. Hughes
1987, Water-Resources Investigations Report 86-4125
This report presents the results of a three-step evaluation of the stream-gaging program in Wisconsin. First, data uses and funding sources were identified for the 89 continuous-record gaging stations operated during the 1984 water year. Next, alternative methods of streamflow estimation were examined for three stations. A flow-routing model was...
Hydraulic analyses of water-surface profiles in the vicinity of the Coamo Dam and Highway 52 bridge, southern Puerto Rico: Flood analyses as related to the flood of October 7, 1985
K. G. Johnson, Ferdinand Quinones-Marquez, Ralph Gonzalez
1987, Water-Resources Investigations Report 87-4039
The magnitude, frequency and extent of the flood of October 7, 1985 at the Rio Coamo in the vicinity of the Coamo Dam and Highway 52 bridge in southern Puerto Rico, were investigated. The observed flood profiles were used to calibrate a step-backwater model. The calibrated model was then used...
Effects of runoff controls on the quantity and quality of urban runoff at two locations in Austin, Texas
Clarence T. Welborn, Jack E. Veenhuis
1987, Water-Resources Investigations Report 87-4004
Rapid urban development in the Austin metropolitan area, Texas, is causing concern about increasing peak discharges from storm runoff and the degradation of the quality of water in receiving streams, lakes, and aquifers. In an attempt to decrease peak discharges and improve water quality, runoff controls are being required in...
Effluent migration from septic tank systems in two different lithologies, Broward County, Florida
B.G. Waller, Barbara Howie, C. R. Causaras
1987, Water-Resources Investigations Report 87-4075
Two septic tank test sites, one in sand and one in limestone, in Broward County, Florida, were analyzed for effluent migration. Groundwater from shallow wells, both in background areas and hydraulically down-gradient of the septic tank system, was sampled during a 16-month period from April 1983 through August 1984. Water...