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Publication Extents

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Water-quality data from a sludge disposal test site, St. Petersburg, Florida, November 1973-July 1977
Mario Fernandez
1978, Open-File Report 78-821
From November 1973 to July 1977, water samples were collected from wells to identify background water-quality conditions and to determine the effects on ground-water quality by St. Petersburg 's sludge-disposal operation (sod farm). Specific conductance and pH were determined in the field. Samples were collected for laboratory determination of selected...
Agricultural land use and water quality in the upper St. Joseph River basin, Michigan
T. Ray Cummings
1978, Open-File Report 78-950
Land use in the upper St. Joseph River basin of south-central Michigan is primarily agricultural. In the 144-square-mile area, the chemical and physical characteristics of water are determined by the climate and soils, as well as by land conservation practices. Municipal waste discharges affect water quality at some locations, as...
Risk analyses for a water-supply system; Occoquan Reservoir, Fairfax and Prince William counties, Virginia
Robert M. Hirsch
1978, Open-File Report 78-452
This report demonstrates two techniques for evaluating risks in the operation of a water-supply system. Both rely on reconstructed historical streamflow data to develop estimates of the probabilities of certain specific events occurring in the future. These techniques are applied to the Occoquan Reservoir which was experiencing an unprecedented low...
Erosion, sediment discharge, and channel morphology in the Upper Chattahoochee River basin, Georgia
Robert E. Faye, W.R. Carey, J. K. Stamer, R.L. Kleckner
1978, Open-File Report 78-576
Average annual rates of sheet erosion and sediment discharge were computed for several watersheds in the Upper Chattahoochee River basin in Georgia. Erosion yields ranged from about 900 to 6,000 tons per year per square mile in nine watersheds and were greatest where land use is largely agricultural or transitional....