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Page 5259, results 131451 - 131475

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Geochemical survey of the Ramseys Draft Addition, Augusta and Highland counties, Virginia
Frank G. Lesure
1982, Miscellaneous Field Studies Map 1369-B
The U.S. Geological Survey (USGS) made a reconnaissance geochemical survey of the Ramseys Draft Addition (fig.1) to test for indistinct or unexposed mineral deposits that might be recognized by their geochemical halos.  Thirty-three stream-sediment, two soil, and 22 rock samples were collected from the addition during the earlier study of...
Carolina Trough structure contour maps
Charles K. Paull, William P. Dillon
1982, Miscellaneous Field Studies Map 1402
Four strong reflection horizons identified on multichannel seismic-reflection profiles of the U.S. continental margin east of the Carolinas have been traced and contoured (maps A-D).  Depths, in kilometers, to the horizons were calculated by the method of Taner and Koehler (1969) using the reflection-time and RMS (root-mean-square) velocities from multichannel...
Water resources data, Pennsylvania water year 1982. Volume 1: Delaware River basin
Andrew Voytik, T.E. White, Deloris W. Speight, K.P. Gillepsie
1982, Water Data Report PA-82-1
Water resources data for the 1982 water year for Pennsylvania consist of records of discharge and water quality of streams; elevation and contents of lakes and reservoirs; and elevation of tides; and water levels of ground-water wells. This volume contains records for water discharge at 66 gaging stations; elevation and...
The Benchmark Farm Program: A method for estimating irrigation water use in southwest Florida
A. D. Duerr, J.T. Trommer
1982, Water-Resources Investigations Report 82-17
Irrigation water-use data are summarized in this report for 74 farms in the Southwest Florida Water Management District. Most data are for 1978-90, but 18 farms have data extending back to the early 1970's. Data include site number and location, season and year, crop type, irrigation system, monitoring method, and...
Ground water in the Piedmont upland of central Maryland
Claire A. Richardson
1982, Water Supply Paper 2077
This report, describing ground-water occurrence in a 130-square-mile area of the central Maryland Piedmont, was originally designed for use by the U.S. Environmental Protection Agency in replying to a request for designation of the aquifers to be the sole or principal source of ground water. However, the information contained in...
Geological Survey research 1981
Water Resources Division, U.S. Geological Survey
1982, Professional Paper 1275
This U.S. Geological Survey activities report includes a summary of 1981 fiscal year scientific and economic results accompanied by a list of geologic, hydrologic, and cartographic investigations in progress. The summary of results includes: (1) Mineral, (2) Water resources, (3) Engineering geology and hydrology, (4) Regional geology, (5) Principles and...
Geophysical survey of the Centennial Mountains Wilderness Study Area and contiguous areas, Beaverhead County, Montana and Clark and Fremont counties, Idaho
R.A. Martin
1982, Miscellaneous Field Studies Map 1342-C
Parts of both the Targhee and Beaverhead National Forests are within the study area. Four contiguous parcels of land, totaling about 96,176 acres (38,922 ha) make up the area. The first of these encompasses about 46,126 acres (18,667 ha), is wholly in Montana, and includes an addition by the Bureau...
Plankton studies in San Francisco Bay; IV, Phytoplankton abundance and species composition, January 1980 - February 1981
R.L. Wong, J. E. Cloern
1982, Open-File Report 82-443
Data are presented on the phytoplankton species composition and abundance in San Francisco Bay from January 1980 through February 1981. Phytoplankton were identified and enumerated in surface samples collected approximately every two weeks at selected stations in the main channel of the Bay, and at shoal stations in the central...
Maps showing geochemical analyses of the Ishi, Mill Creek, Polk Springs, and Butt Mountain further planning areas, Tehama and Plumas counties, California
Jocelyn A. Peterson, Robin Bradley, K. A. Johnson
1982, Miscellaneous Field Studies Map 1340-B
The Ishi, Mill Creek, Polk Springs, and Butt Mountain Further Planning Areas occupy part of the region between Chico and Mount Lassen (fig. 1).  All of these areas are characterized by thick sequences of Tertiary and Quaternary pyroclastic and lava flows, predominantly of the Pliocene Tuscan Formation,...
Geochemical survey of the Dolly Ann Roadless Area, Alleghany County, Virginia
Frank G. Lesure
1982, Miscellaneous Field Studies Map 1358-B
The U.S. Geological Survey (USGS) made a reconnaissance geochemical survey of the Dolly Ann Roadless Area (fig. 1) to test for indistinct or unexposed mineral deposits that might be recognized by their geochemical halos. Similar geochemical surveys based on trace-element analyses have been credited with the discovery of many types...
Digital model of the Bates Creek alluvial aquifer near Casper, Wyoming
K. C. Glover
1982, Water-Resources Investigations Report 82-4068
A digital model was used to simulate ground-water flow within the Bates Creek alluvial aquifer, southwest of Casper, Wyoming. Hydrologic data collected during 1977 and 1978 were used to develop the flow model under steady-state and transient conditions. Three scenarios for operating the stream-aquifer system were evaluated with the digital...
Model modifications for simulation of flow through stratified rocks in eastern Ohio
J. O. Helgesen, A. C. Razem, S. P. Larson
1982, Water-Resources Investigations Report 82-4019
A quasi three-dimensional groundwater flow model is being used as part of a study to determine impacts of coal-strip mining on local hydrologic systems. Modifications to the model were necessary to simulate local hydrologic conditions properly. Perched water tables required that the method of calculating vertical flow rate be changed....