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Page 4856, results 121376 - 121400

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Results of a preimpoundment water-quality study of Swatara Creek, Pennsylvania
David K. Fishel, J.E. Richardson
1986, Water-Resources Investigations Report 85-4023
The water quality of Swatara Creek prior to impoundment by the proposed Swatara Creek Reservoir in south-central Pennsylvania was studied from July 1981 through October 1982. The report, done in cooperation with the Pennsylvania Department of Environmental Resources (PaDER), Bureau of State Parks, presents information on existing water-quality conditions. A...
Comparison of flume and towing methods for verifying the calibration of a suspended-sediment sampler
J.P. Beverage, J.C. Futrell
1986, Water-Resources Investigations Report 86-4193
Suspended-sediment samplers must sample isokinetically (at stream velocity) in order to collect representative water samples of rivers. Each sampler solo by the Federal Interagency Sedimentation Project or by the U.S. Geological Survey Hydrologic Instrumentation Facility has been adjusted to sample isokinetically and tested in a flume to verify the calibration....
Ground-water resources in Mendocino County, California
C. D. Farrar
1986, Water-Resources Investigations Report 85-4258
Mendocino County includes about 3,500 sq mi of coastal northern California. Groundwater is the main source for municipal and individual domestic water systems and contributes significantly to irrigation. Consolidated rocks of the Franciscan Complex are exposed over most of the county. The consolidated rocks are commonly dry and generally supply...
Quality of stormwater runoff in the Blue River basin, Missouri and Kansas, July-October 1981 and April-July 1982
D. W. Blevins
1986, Water-Resources Investigations Report 84-4226
Stormwater-runoff sampling was done at three mainstem stations on the Blue River, Missouri, and three stations on urban tributaries. Concentrations of lead, iron, manganese, zinc, and ammonia nitrogen consistently exceeded Missouri water-quality standards. Many constituents were significantly correlated with large concentrations of suspended sediment from the agricultural areas in the...
Techniques for estimating flood-peak discharges from urban basins in Missouri
L.D. Becker
1986, Water-Resources Investigations Report 86-4322
Techniques are defined for estimating the magnitude and frequency of future flood peak discharges of rainfall-induced runoff from small urban basins in Missouri. These techniques were developed from an initial analysis of flood records of 96 gaged sites in Missouri and adjacent states. Final regression equations are based on a...
Potentiometric map of the Cockfield Aquifer in Mississippi, fall 1984
Daphne Darden
1986, Water-Resources Investigations Report 86-4042
This map, the second in a series for the Cockfield aquifer in Mississippi, follows a map that delineated the 1980 potentiometric surface of the aquifer. This water level map is based on water level measurements made in about 80 wells in the Cockfield aquifer in the fall of 1984. The...
Percentage change in saturated thickness of the High Plains Aquifer, west-central Kansas, 1950 to average 1984-86
Barbara J. Dague
1986, Water-Resources Investigations Report 86-4365
Continuing studies are being made in west-central Kansas to provide up-to-date information that will aid in the management of groundwater for irrigation. The results are presented of the sixth in a series of studies that used a statistical technique called kriging, to produce hydrologic maps. The kriging technique interpolates water...
Geochemistry of altered and mineralized rocks from the Morey and Fandango Wilderness Study Areas, northern Hot Creek Range, Nye County, Nevada
J. T. Nash, D. A. John, M.J. Malcolm, Paul H. Briggs, J.G. Crock
1986, Open-File Report 86-410
The U.S. Geological Survey and the St. Johns River Water Management District are investigating the hydrogeology of the Floridan aquifer system. An essential element of this investigation is the design and construction of a monitor well network in the lower saline water-bearing zone which occurs at about 2,000 ft below...