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Page 4756, results 118876 - 118900

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Geology and hydrology of the Onondaga aquifer in eastern Erie County, New York, with emphasis on ground-water-level declines since 1982
W. W. Staubitz, Todd S. Miller
1987, Water-Resources Investigations Report 86-4317
The Onondaga aquifer is a nearly flat-lying, 25- to 110-foot-thick, cherty limestone with moderately developed karst features such as sinkholes, disappearing streams, and solution-widened joints. Most groundwater moves through solution-widened bedding planes, although some moves through vertical joints. The yield of water from 42 wells ranges from 3 to 100...
Investigation of techniques to estimate rainfall-loss parameters for Illinois
L.S. Weiss, A. L. Ishii
1987, Water-Resources Investigations Report 87-4151
An attempt was made by the U.S. Geological Survey to develop parameter-estimation techniques for two rainfall-loss computation methods used in the U.S. Army Corps of Engineers ' flood-hydrograph model (HEC-1). Six rainfall-loss parameters were investigated - four for the Exponential Loss-Rate method and two for the Initial and Uniform Loss-Rate...
Estimates of streamflow characteristics for selected small streams, Baker River basin, Washington
John R. Williams
1987, Water-Resources Investigations Report 87-4006
Regression equations were used to estimate streamflow characteristics at eight ungaged sites on small streams in the Baker River basin in the North Cascade Mountains, Washington, that could be suitable for run-of-the-river hydropower development. The regression equations were obtained by relating known streamflow characteristics at 25 gaging stations in nearby...
A review of surface-water sediment fractions and their interactions with persistent manmade organic compounds
P.J. Witkowski, J. A. Smith, T. V. Fusillo, C. T. Chiou
1987, Circular 993
This paper reviews the suspended and surficial sediment fractions and their interactions with manmade organic compounds. The objective of this review is to isolate and describe those contaminant and sediment properties that contribute to the persistence of organic compounds in surface-water systems. Most persistent, nonionic organic contaminants, such as the...
Maps showing anomalous copper concentrations in stream sediments and heavy-mineral concentrates from the Ajo and Lukeville 1 degree by 2 degrees quadrangles, Arizona
P. K. Theobald, H. N. Barton
1987, Miscellaneous Field Studies Map 1834-C
This map is part of a folio of maps of the Ajo and Lukeville 1 ° x 2° quadrangles, Arizona, prepared under the Conterminous United States Mineral Assessment Program. Other publications in this folio include U.S. Geological Survey Miscellaneous Field Studies Maps MF-1831-A and MF-1831-B and Open-File Reports 82-119, 82–599,...
Preliminary assessment of water quality and its relation to hydrogeology and land use: Potomac-Raritan-Magothy aquifer system, New Jersey
Cynthia Barton, E. F. Vowinkel, J. P. Nawyn
1987, Water-Resources Investigations Report 87-4023
The relation of water quality to hydrogeology and land use was evaluated using analysis of water samples from 71 wells in the northern part of the Potomac-Raritan-Magothy aquifer system in New Jersey. The sampling network was evaluated for variations in hydrogeology. Well depths, pumping rates, and the number of wells...
Overview of water resources in Owens Valley, California
L.S. Rogers
1987, Water-Resources Investigations Report 86-4357
In 1982-84, a water resources appraisal of Owens Valley was made by using available hydrologic information. Results of the appraisal provided an overview of water resources in Owens Valley; a better understanding of the groundwater system; and a framework for additional studies. Owens Valley is in east-central California and is...
Water resources data for Mississippi, water year 1985
E.J. Tharpe, M.L. Plunkett, F. Morris, W. T. Oakley
1987, Water Data Report MS-85-1
Water resources data for the 1985 water year for Mississippi consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; and water levels and water quality of ground-water wells. This report contains records of water discharge at 71 gaging stations;...
Difference between the potentiometric surfaces of the Magothy Aquifer in Fall of 1975 and Fall of 1986 in southern Maryland
F. K. Mack, D. C. Andreasen, S. E. Curtin, J. C. Wheeler
1987, Water-Resources Investigations Report 87-4217
The potentiometric map is highlighted with indications concerning: (1) outcrop areas of the Magothy aquifer; (2) the approximate location of the line of equal difference between the potentiometric surface in fall 1975 and fall 1986; (3) observation and/or supply wells yielding < 10,000 gallons/day (gpd); and (4) other supply wells...