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Page 4540, results 113476 - 113500

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Data processing programs for aerial gamma-ray data
Joseph S. Duval1
1985, Open-File Report 85-359
The U.S. Geological Survey (USGS) uses computer programs to process aerial gamma-ray data; some do editing and data manipulation to allow for corrections. Programs to convert flight-line data to latitude-longitude coordinates are included. Plotting programs include contour plotting, profile plots, and photographic raster plots....
Geology of the Carlin gold deposit, Nevada
Arthur S. Radtke
1985, Professional Paper 1267
This report describes the geology of the Carlin gold deposit and the Lynn mining district, including an area of about 80km2 in northern Eureka County, Nev. (fig. 1). The Carlin mine is located in secs. 13 and 14, T.35N., R.50E., at an elevation of 6,400 ft near the crest of...
Hydrologic data for urban studies in the Austin, Texas, metropolitan area, 1983
J.D. Gordon, D.L. Pate, M.E. Dorsey
1985, Open-File Report 85-172
Hydrologic investigations of urban watersheds in Texas were begun by the U.S. Geological Survey in 1954. Studies are now in progress in Austin, and Houston. Studies have been completed in the Dallas, Fort Worth, and San Antonio areas. The Geological Survey, in cooperation with the Texas Department of Water Reources, began...
Documentation of a Regional Aquifer Simulation Model, RAQSIM, and a description of support programs applied in the Twin Platte-Middle Republican Study Area, Nebraska
R. E. Cady, J. M. Peckenpaugh
1985, Water-Resources Investigations Report 85-4168
RAQSIM, a generalized flow model of a groundwater system using finite-element methods, is documented to explain how it works and to demonstrate that it gives valid results. Three support programs that are used to compute recharge and discharge data required as input to RAQSIM are described. RAQSIM was developed to...
Hydrology of Area 52, Rocky Mountain coal province, Wyoming, Colorado, Idaho, and Utah
H. W. Lowham, D. A. Peterson, L. R. Larson, E. A. Zimmerman, B. H. Ringen, K. L. Mora
1985, Open-File Report 83-761
This report is one of a series designed to characterize the hydrology of drainage basins within coal provinces, nationwide. Area 52 (in the Rocky Mountain Coal Province) includes the Green River Basin upstream from the Yampa River, and the Bear River upstream from the Bear Lake - a total of...
Potentiometric surface of the upper Floridan Aquifer, west-central Florida, May 1985
G. L. Barr
1985, Open-File Report 85-482
A May 1985 potentiometric surface map of the Upper Floridan aquifer in west-central Florida depicts the annual low water-level period. Most areas of west-central Florida were experiencing drought conditions and water levels were at or approaching near-record low levels. Water levels in most wells measured in May 1985 were lower...