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Page 1692, results 42276 - 42300

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Water resources of Big Horn County, Wyoming
Maria Plafcan, Earl W. Cassidy, Myron L. Smalley
1993, Water-Resources Investigations Report 93-4021
Groundwater in unconsolidated aquifers is the most reliable and accessible source of potable water in Big Horn County, Wyoming. Well yields generally ranged from 25 to 200 gal/min; however, yields of 1600 gal/min are reported from wells in the gravel, pediment, and fan deposits. Bedrock aquifers that yield the most...
Water-resources activities of the U.S. Geological Survey in Montana, October 1991 through September 1993
K. S. Midtlyng (compiler), C.J. Harksen
1993, Open-File Report 93-151
Water-resources programs and activities of the U.S. Geological Survey in Montana consist principally of hydrologic-data collection and investigative studies that address water-resource issues. The work is supported by direct Federal funding, by transfer of funds from other Federal agencies, and by joint funding agreements with State or local agencies. The...
Inventory of drainage wells and potential sources of contaminants to drainage-well inflow in Southwest Orlando, Orange County, Florida
George Fred Taylor
1993, Water-Resources Investigations Report 93-4061
Potential sources of contaminants that could pose a threat to drainage-well inflow and to water in the Floridan aquifer system in southwest Orlando, Florida, were studied between October and December 1990. Drainage wells and public-supply wells were inventoried in a 14-square-mile area, and available data on land use and activities...
Geohydrology and water quality of the Calumet aquifer, in the vicinity of the Grand Calumet River/Indiana Harbor Canal, northwestern Indiana
J.M. Fenelon, Lee R. Watson
1993, Water-Resources Investigations Report 92-4115
The water-table configuration of the Calumet aquifer in the vicinity of the Grand Calumet River/Indiana Harbor Canal in Lake County, northwestern Indiana, reflects the complexity of the shallow ground-water-flow system. Large depressions in the water table in sewered areas interrupt broad ground-water divides between rivers. The aquifer/stream interactions along the...
Regression modeling of ground-water flow; Supplement 1 : modifications to the computer code for nonlinear regression solution of steady-state ground-water flow problems
Richard L. Cooley
1993, Techniques of Water-Resources Investigations 03-B4
Modifications to the computer code for nonlinear regression solution of steady-state ground-water flow problems in "Regression Modeling of Ground-Water Flow", by R.L. Cooley and R.L. Naff (U.S. Geological Survey, Techniques of Water Resources Investigations, book 3, chap. B4, 1990), improve the performance of the code. The changes 1) allow any...
Geomorphic, hydrologic, and erosion data for selected reclaimed hillslopes, the Seneca II mine, Routt County, Colorado, October 1988-July 1990
J. G. Elliott
1993, Water-Resources Investigations Report 92-4096
Geomorphic, hydrologic, and erosion data were collected from five reclaimed hillslopes at the Seneca II mine near Hayden, Colorado. Hillslope surveys were used to determine hillslope lengths, which range from 670 to 1,280 ft, and hillslope gradients, which range from 0.17 to 0.23 ft/ft (17 to 23 percent). Elevations in...
Modifications to the modular three-dimensional finite-difference ground-water flow model used for the Columbia Plateau Regional Aquifer-System Analysis, Washington, Oregon, and Idaho
A. J. Hansen Jr.
1993, Open-File Report 91-532
The report documents modifications to the U.S. Geological Survey's modular three-dimensional finite-difference ground-water flow model used for a regional aquifer-system analysis of the Columbia Plateau. The report, which describes the concepts and mathematical basis for the modifications, is intended for potential users who are familiar with the original modular model....
Water-resources investigations in Wisconsin, 1993
D. E. Maertz
1993, Open-File Report 93-129
PROBLEM: Surface-water information is needed for surveillance, planning, design, hazard warning, operation, and management in water-related fields such as water supply, hydroelectric power, flood control, irrigation, bridge and culvert design, wildlife management, pollution abatement, flood-plain management, and water-resources development. An appropriate data base is necessary to provide this information. OBJECTIVE: The...