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Water resources data, Nevada, water years 1981
Water Resources Division, U.S. Geological Survey
1982, Water Data Report NV-81-1
Water-resources data published herein for the 1981 water year comprise the following records: Water discharge for 132 gaging stations on streams, canals, and drains. Discharge data for 82 peak-flow stations and 7 low-flow stations on streams. Stage and contents for 21 lakes and reservoirs. Water levels for 235 observation wells....
Geologic maps of the Sacramento-San Joaquin Delta, California
Brian F. Atwater
1982, Miscellaneous Field Studies Map 1401
The Sacramento-San Joaquin Delta, the arm of the San Francisco Bay estuary that reaches into the Central Valley of California, differs from typical coastal-plain deltas in three important respects.  First, rather than meeting the ocean individually and directly, all major waterways of this delta discharge via a single constricted outlet...
Water resources data, Louisiana, water year 1982: Volume 2. Southern Louisiana
D.D. Carlson, G.R. Stallworth, L.J. Dantin, C.G. Stuart
1982, Water Data Report LA-82-2
Water resources data for the 1982 water year for Louisiana 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. This report, in two volumes, contains records for water discharge...
Mineral resource potential map of the Gila-San Francisco Wilderness Study Area, Graham and Greenlee counties, Arizona
Donlad H. Richter, Douglas P. Klein, Viki A. Lawrence, Michael Lane
1982, Miscellaneous Field Studies Map 1315-B
The mineral resource potential of the Gila-San Francisco Wilderness Study Area (AZ-040-022/023/024) is low (fig. 2). Although favorable geologic environments for placer gold deposits and manganese vein deposits are present in the study area, the probability of discovering economically exploitable deposits of these metals is low, and not encouraging. Even...
Mineral resource potential map of the Clear Lake Roadless Area, Leon County, Florida
Charles W. Hendry Jr., Sam H. Patterson, Thomas M. Crandall, John W. Sweeney
1982, Miscellaneous Field Studies Map 1479
The only mineral material that has been produced within the Clear Lake Roadless Area is clayey sand used as fill for highway construction and for stabilizing Forest Service roads. Fuller's earth, common clay, and sand and gravel presently are produced in Leon County and in nearby counties, and limestone and...
Drainage divides, Massachusetts-Hudson River basin
S. William Wandle Jr.
1982, Open-File Report 81-1199
Drainage boundaries for selected subbasins in northern Berkshire County, Massachusetts, are delineated on five topographic quadrangle maps at a scale of 1:24,000. Drainage basins are shown for all U.S. Geological Survey data-collection sites and for mouths of major rivers. Drainage basins are shown for the outlets of lakes or ponds...
Map projections used by the U.S. Geological Survey
John Parr Snyder
1982, Bulletin 1532
After decades of using only one map projection, the Polyconic, for its mapping program, the U.S. Geological Survey (USGS) now uses sixteen of the more comnon map projections for its published maps. For larger scale maps, including topographic quadrangles and the State Base Map Series, conformal projections such as the...
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...
Water resources program of the U.S. Geological Survey related to agriculture in Louisiana
T.L. Huntzinger
1982, Open-File Report 82-554
Surveillance activities of the U.S. Geological Survey Louisiana District include long-term, hydrologic-data-collection sites that serve a current-purpose, management function and (or) that furnish a data base for interpretative studies. The proposed program for 1982 includes a network of 69 surface-water data sites (continuous gaging stations), 250 flood-data sites (crest-stage stations),...
Estimation of response-spectral values as functions of magnitude, distance, and site conditions
W. B. Joyner, David M. Boore
1982, Open-File Report 82-881
We have developed empirical predictive equations for the horizontal pseudo-velocity response at 5-percent damping for 12 different periods from 0.1 to 4.0 s. Using a multiple linear-regression method similar to the one we used previously for peak horizontal acceleration and velocity, we analyzed response spectra period by period for 64...