Study plan for the regional aquifer-system analysis of alluvial basins in south-central Arizona and adjacent states
T. W. Anderson
1980, Open-File Report 80-1197
The alluvial basins in the Southwestern United States constitute a major source of ground water and are relied upon extensively for agricultural, industrial, and public water supplies. Large-scale depletion of ground water is directly related to pumping that has occurred in the past few decades and is continuing today. The...
Interactive computer methods for generating mineral-resource maps
James Alfred Calkins, A.S. Crosby, T.E. Huffman, A. L. Clark, G.T. Mason, R.J. Bascle
1980, Circular 815
Inasmuch as maps are a basic tool of geologists, the U.S. Geological Survey's CRIB (Computerized Resources Information Bank) was constructed so that the data it contains can be used to generate mineral-resource maps. However, by the standard methods used-batch processing and off-line plotting-the production of a finished map commonly takes...
Graded storm sand layers offshore from the Yukon Delta, Alaska
C. Hans Nelson
1980, Open-File Report 80-712
The northern Bering Sea has a history of severe storm surges. The most recent, and perhaps the worst in historical times, occurred in November, 1974 (Fathauer, 1975). Evidence of storm surge events is exhibited in sea-floor stratigraphy as well as shoreline flooding and indicates that significant widespread changes in sea-floor...
Preliminary data set for three dimensional digital model of the Red River and Madison aquifers
J. S. Downey, Emanuel J. Weiss
1980, Open-File Report 80-756
A homogeneous stochastic model for earthquake occurrences
Anne S. Kiremidjian, Thalia Anagnos
1980, Open-File Report 80-1153
The objective of this study is to develop a probabilistic model for earthquake occurrences with temporal and spatial memory. Stochastic processes are used to characterize both the spatial and temporal dependencies of seismic occurrences along a fault. Currently, only homogeneous space and time transitions are considered. The resulting process however...
Ground-water appraisal of sand plains in Benton, Sherburne, Stearns, and Wright counties, central Minnesota
Gerald F. Lindholm
1980, Open-File Report 80-1285
Surficial-sand aquifers in 960 square miles of central Minnesota have been studied to determine the occurrence, availability, and suitability of the surficial aquifer as a source of water. The aquifer is being increasingly developed for irrigation. During the drought of 1976, nearly 24,000 acre-feet of ground water was withdrawn for irrigation,...
General study of the modified Einstein method of computing total sediment discharge
D. E. Burkham, David R. Dawdy
1980, Water Supply Paper 2066
Abstract contains content that can not be displayed, please see the publication for abstract...
Effects of urbanization on the water quality of lakes in Eagan, Minnesota
M. A. Ayers, G. A. Payne, Mark A. Have
1980, Water-Resources Investigations Report 80-71
Water-quality characteristics of 17 lakes and ponds in the city of Eagan were described from data collected from 1972 through 1978. The data showed that differences in water quality between lakes were related to differences in the percentage of urbanization. However, water-quality variations within each lake were affected more by...
Ground water of coal deposits, Bay County, Michigan
J. R. Stark, Michael G. McDonald
1980, Open-File Report 80-591
A coal deposit in Bay County, Mich., typical of Pennsylvanian-coal deposits in the State, was studied to determine the degree to which hydrologic factors might affect future coal mining. The coal deposit, which averages about 0.5 meters in thickness, lies 50 meters below land surface. It is part of a...
Planning and design of studies for river-quality assessment in the Truckee and Carson River basins, California and Nevada
Jon O. Nowlin, W. M. Brown, L. H. Smith, R.J. Hoffman
1980, Open-File Report 80-435
The objectives of the Geological Survey 's river-quality assessment in the Truckee and Carson River basins in California and Nevada are to identify the significant resource management problems; to develop techniques to assess the problems; and to effectively communicate results to responsible managers. Six major elements of the assessment to...
Geological studies of the COST No. B-3 well, United States mid-Atlantic continental slope area
Peter A. Scholle
1980, Circular 833
The COST No. B-3 well is the first deep stratigraphic test to be drilled on the Continental Slope off the Eastern United States. The well was drilled in 2,686 ft (819 m) of water in the Baltimore Canyon trough area to a total depth of 15,820 ft (4,844 m) below...
Digital-model projection of saturated thickness and recoverable water in the Ogallala Aquifer, Texas County, Oklahoma
Robert B. Morton
1980, Open-File Report 79-565
A digital model was used to provide a quantitative description of the Ogallala aquifer in Texas County, Oklahoma, and to predict saturated thickness and water in storage from the aquifer at specified future times. The Ogallala aquifer, which consists of unconsolidated sand, gravel, and clay, is the principal source of...
Hydrology of Jumper Creek Canal basin, Sumter County, Florida
Warren Anderson
1980, Open-File Report 80-208
In 1960, floods caused extensive damage to agribusiness in Jumper Creek Canal basin. In 1962, a plan was developed for a proposed project to reduce the threat of floods. In 1976, a study of the hydrology of the basin was proposed to help evaluate this plan and to serve as...
Mathematical model of the Tesuque aquifer system underlying Pojoaque River basin and vicinity, New Mexico
Glenn A. Hearne
1980, Open-File Report 80-1023
A three-dimensional digital model of ground-water flow was constructed to represent the dipping anisotropic beds of the Tesuque aquifer system underlying the Pojoaque River basin and vicinity, New Mexico. Simulations of steady-state conditions and historical ground-water withdrawals were consistent with observed data. The model was used to simulate the response...
Water resources of the Walker River Indian Reservation, west-central Nevada
Donald H. Schaefer
1980, Open-File Report 80-427
Increasing interest in expanding the livestock and agricultural operations on the Walker River Indian Reservation, Nev., has prompted the Walker River Paiute Tribe to have the present and available water resources of the reservation appraised and proposed sites for new wells evaluated. Flow of the Walker River into the reservation...
Hydrologic monitoring program in Eldridge-Wilde and East Lake Road well-field areas, Pinellas and Hillsborough counties, Florida, 1977 water year
Boyd F. Joyner, James M. Gerhart
1980, Open-File Report 80-345
The observation-well network in the vicinity of the two well fields is described in detail. Data obtained from the network from October 1976 through September 1977, as well as rainfall and pumpage records, are presented and discussed. Below-normal rainfall caused the water table and potentiometric surface of the Floridan aquifer...
Lacustrine-humate model; sedimentologic and geochemical model for tabular sandstone uranium deposits in the Morrison Formation, Utah, and application to uranium exploration
Fred Peterson, Christine E. Turner-Peterson
1980, Open-File Report 80-319
An earthquake catalog and velocity model for the USGS Peter the First Range seismic array, Tadjikistan USSR
Jack Pelton, Fred Fischer
1980, Open-File Report 80-840
Preliminary observations of noise spectra at the SRO and ASRO stations
Jon Peterson
1980, Open-File Report 80-992
The seismic noise spectra presented in this report were derived from SRO and ASRO station data for the purpose of evaluating the performance of the seismic instruments. They are also useful for constructing a spectral estimate of earth noise at a quiet site based on noise samples obtained from a...
Chemical, spectrographic, and modal analyses of syenitic rocks, thorium veins, and carbonatite in the Powderhorn District, Gunnison County, Colorado
David Carl Hedlund, Jerry Chipman Olson
1980, Open-File Report 80-233
Digital-computer model of ground-water flow in Tooele Valley, Utah
Allan C. Razem, Scott D. Bartholoma
1980, Open-File Report 80-446
A two-dimensional, finite-difference digital-computer model was used to simulate the ground-water flow in the principal artesian aquifer in Tooele Valley, Utah. The parameters used in the model were obtained through field measurements and tests, from historical records, and by trial-and-error adjustments. The model was calibrated against observed water-level changes that...
Water-level monitoring along San Andreas and San Jacinto faults, southern California, during fiscal year 1980
P.M. Merifield, D.L. Lamar
1980, Open-File Report 81-386
Beginning in October 1976, a program of water-level monitoring of abandoned water wells was initiated in the Palmdale area with the purpose of identifying possible water-level changes premonitory to a major earthquake on the San Andreas fault. In October 1977, the program was extended southeastward along the rift zone to...
Modern and Holocene chrysomonad cysts from Lost Trail Pass Bog, Montana
David P. Adam, Peter J. Mehringer
1980, Open-File Report 80-797
Sediment transport model for the East Fork of the Carson River, Carson Valley, Nevada
Terry Katzer, J. P. Bennett
1980, Open-File Report 80-160
No abstract available. ...
Appraisal of ground-water resources in the San Antonio Creek Valley, Santa Barbara County, California
C. B. Hutchinson
1980, Open-File Report 80-750
A nearly threefold increase in demand for water in the 154-square-mile San Antonio Creek valley in California during the period 1958-77 has increased the potential for overdraft on the ground-water basin. The hydrologic budget for this period showed a perennial yield of about 9,800 acre-feet per year and an annual...
