Water Resources Division, U.S. Geological Survey
1981, Land Use and Land Cover 134
Search Results
165626 results.
Alternate formats: RIS file of the first 3000 search results | Download all results as CSV | TSV | Excel | RSS feed based on this search | JSON version of this page of results
Page 4914, results 122826 - 122850
Publication Extents
Not all publications have extents, not all extents are completely accurateB.G. Reagor, C. W. Stover, S. T. Algermissen
1981, Miscellaneous Field Studies Map 1325
The earthquake data shown on this map and listed in table 1 are a list of earthquakes that were originally used in preparing the Seismic Risk Studies in the United States in the United States (Algermissen, 1969) which have been recompiled and updated through 1977. These data have been reexamined...
D. H. Scott, K. L. Tanaka
1981, IMAP 1280
M.R. Karlinger, James A. Skrivan
1981, Water-Resources Investigations Report 80-50
Kriging is a statistical estimation technique for regionalized variables which exhibit an autocorrelation structure. Such structure can be described by a semi-variogram of the observed data. The kriging estimate at any point is a weighted average of the data, where the weights are determined using the semi-variogram and an assumed...
Gary W. Hill
1981, Open-File Report 81-102
Water Resources Division, U.S. Geological Survey
1981, Land Use and Land Cover 154
Water Resources Division, U.S. Geological Survey
1981, Open-File Report 81-613
Water Resources Division, U.S. Geological Survey
1981, Land Use and Land Cover 118
Leo B. House, Steven Skavroneck
1981, Water-Resources Investigations Report 80-105
This study was made to identify the best predictive equations for a stream's reaeration-rate coefficient. Reaeration-rate information is needed in dissolvedoxygen modeling work, but an actual tracer measurement is not always possible. The propane-area gas-tracer method and predictive equations were compared for determination of stream-reaeration coefficients (K.2) for reaches of two...
Lawrence J. Poppe, Charles K. Paull, Christopher G. Newhall
1981, Open-File Report 81-1333
The U.S. Geological Survey (USGS), under the sponsorship of The Agency for International Development, in cooperation with Dartmouth College, collected 13 cores to study the sedimentation in two Guatemalan cauldera lakes, Atitlan and Ayarza....
Earle Rupert Cressman, Martin C. Noger
1981, Circular 801
In 1960, the U.S. Geological Survey and the Kentucky Geological Survey began a program to map the State geologically at a scale of 1:24,000 and to publish the maps as 707 U.S. Geological Survey Geologic Quadrangle Maps. Fieldwork was completed by the spring of 1977, and all maps were published...
Marland P. Billings, Peter T. Lyttle
1981, Miscellaneous Field Studies Map 1302
Assignment of Phanerozoic stratigraphic units to their proper place in the geologica time scale is based primarily on paleontology. Radiometric methods are becoming increasingly important (Naylor, 1976), particularly where paleontological data are lacking. This map and text are concerned only with the paleontological data bearing on the Paleozoic stratigraphy of...
Wayne W. Lapham
1981, Water-Resources Investigations Report 81-35
The ground-water resources of the White River basin in and near Madison County, Indiana, were investigated by mapping the aquifers, estimating their hydraulic properties, determining the distribution of potentiometric head in the aquifers, and estimating some of the components of the ground-water budget from data collected in the field. This...
Leo B. House
1981, Water-Resources Investigations Report 82-5
This report describes and documents a one-dimensional computer model that predicts dissolved-oxygen and temperature profiles in a lake or reservoir. Downstream release dissolved-oxygen concentrations and temperatures also are computed based on a user-specified outflow withdrawal elevation. The model can, therefore, be used to compare top-draw versus bottom-draw outlet configuration effects...
Jocelyn A. Peterson, L.M. Martin, L. E. Esparza, Gary J. Cwick
1981, Miscellaneous Field Studies Map 1214-B
In accordance with the provisions of the Federal Land Policy and Management Act (Public Law 94-579, October 21, 1976), the Geological Survey and the Bureau of Mines have conducted mineral surveys on certain areas, which formally had been identified as "natural" and "primitive" areas prior to November 1, 1975.The Wilderness...
Thomas E. Imbrigiotta, Angel Martin Jr.
1981, Water-Resources Investigations Report 81-53
A 3-year study in northwest Elkhart County, Indiana, was done to (1) de-fine the general flow and quality of water in the outwash aquifer system, (2) determine if a well field proposed for a site at the Elkhart Municipal Airport would draw leachate from the Himco landfill, and (3) define...
Water Resources Division, U.S. Geological Survey
1981, Land Use and Land Cover 166
R. Van Horn
1981, IMAP 1330
E. H. Pampeyan, Philip W. Harsh, J.M. Coakley
1981, Miscellaneous Field Studies Map 1217
The southernmost 15 km of this map is a product of a study that began in 1975 as part of a study of recency of faulting in coastal California (Ziony and others, 1974; Buchanan-Banks and others, 1978; Pampeyan , 1979). In February 1975, after being shown evidence of recent faulting...
Kenneth J. Havran
1981, Open-File Report 81-620
The Gulf of Mexico Outer Continental Shelf (OCS) continues to be the most intensively developed offshore oil- and gas-producing region in the world. With the development of technology, exploration, development, and production are being extended to include areas off the coast of southwest Florida and deep-water areas near the Mississippi...
K. S. Muir
1981, Water-Resources Investigations Report 81-6
Scotts Valley, Calif., is a rural residential area with a rapidly expanding population. Its mediterranean-type climate yields an average annual rainfall of 40 inches. The Santa Margarita Sandstone is the principal aquifer in the area, supplying about 90 percent of all water for domestic purposes. Sources of recharge for the...
Harald Drewes
1981, IMAP 1363
Harald Drewes
1981, IMAP 1492
J. W. LaBaugh, G.E. Groschen, Thomas C. Winter
1981, Water-Resources Investigations Report 81-41
A limnological and geochemical survey of Williams Lake, Minnesota, was made in 1979 to provide an initial interpretive description of the lake and the contiguous ground-water system. This survey was made as part of a continuing research program related to the investigation of the interaction of lakes and their contiguous...
John Michael Kernodle
1981, Water-Resources Investigations Report 81-70
A two-dimensional ground-water flow model of the Eutaw-McShan and Gordo aquifers in the area of Lee County, Miss., was successfully calibrated and verified using data from six long-term observation wells and two intensive studies of areal water levels. The water levels computed by the model were found to be most...