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...
Calibration and potential uses of a digital water-quality model for the Arkansas River in Pueblo County, Colorado
Kimball E. Goddard
1980, Water-Resources Investigations Report 80-38
The U.S. Geological Survey conducted a 1-year study to calibrate and demonstrate the use of a steady-state water quality model for a 42-mile reach of the Arkansas River in Pueblo County, Colo. Based on the calibration, the model is capable of accurately predicting concentrations of carbonaceous biochemical oxygen demand, total...
Evaluation of peak-flow data network of small streams in Missouri
Leland D. Hauth
1980, Water-Resources Investigations Report 80-87
Standard regression models were used as a tool to evaluate the transferability of streamflow characteristics for the small-streams network in Missouri. Station records were divided into segments and tested for adequacy of record length and sample size for two physiographic regions. The standard error of estimate for each calibrated regression...
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...
Scanning electron micrographs of modern chrysomonad cysts from Haypress Meadows, El Dorado County, California
David P. Adam
1980, Open-File Report 80-1235
Hydrology of the Chicod Creek basin, North Carolina, prior to channel improvements
Clyde E. Simmons, Mary C. Aldridge
1980, Open-File Report 80-680
Extensive modification and excavation of stream channels in the 6-square mile Chicod Creek basin began in mid-1979 to reduce flooding and improve stream runoff conditions. The effects of channel improvements on this Coastal Pain basin 's hydrology will be determined from data collected prior to, during, and for several years...
Methods and applications of digital-model simulation of the Red River alluvial aquifer: Shreveport to the mouth of the Black River, Louisiana
A. H. Ludwig, J. E. Terry
1980, Water-Resources Investigations Report 79-114
The Red River Waterways Project provides for the construction of five locks and dams on the Red River from the Mississippi River to Shreveport, La. The methodology used by the U.S. Geological Survey in studying the effects of the navigation pools on the ground-water-flow regime involved digital modeling of steady-...
Ground-water models for water resources planning
John E. Moore
1980, Open-File Report 80-581
In the past decade hydrologists have emphasized the development of computer-based mathematical models to aid in the understanding of flow, the transport of solutes, transport of heat, and deformation in the groundwater system. These models have been used to provide information and predictions for water managers. Too frequently, groundwater was...
Sediment transport in the Snake and Clearwater rivers in the vicinity of Lewiston, Idaho
Michael L. Jones, Harold R. Seitz
1980, Open-File Report 80-690
During the period 1972-79, the bedload in the Clearwater River ranged from about 50,000 tons (45,000 metric tons) per year in 1972 and 1974 to about 1,000 tons (910 metric tons) per year in the drought years of 1973 and 1977. Suspended-sediment load at the same location ranged from about...
Hydrologic setting of Williams Lake, Hubbard County, Minnesota
Donald I. Siegel, Thomas C. Winter
1980, Open-File Report 80-403
The hydrology and geology of Williams Lake watershed was studied to evaluate the accuracy of various methods used to determine precipitation and evaporation in lake water-balance studies and to define a lake and ground-water system according to approaches suggested by theoretical modeling studies. Regression analysis between estimated and measured precipitation...
Model evaluation of the hydrogeology of the Morris Bridge well field and vicinity in West-Central Florida
Paul D. Ryder, Dale M. Johnson, James M. Gerhart
1980, Water-Resources Investigations Report 80-29
The Morris Bridge well field in west-central Florida, which is being developed may have a maximum well-field withdrawal of 40 million gallons per day. The water will be pumped from the Floridan aquifer--a sequence of carbonate rocks about 1,100 feet thick underlying surficial sand and clay deposits. A highly fractured...
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...
A catalogue of drill core recovered from Kilauea Iki lava lake, from 1967 to 1979
Rosalind Tuthill Helz, Norman G. Banks, Thomas J. Casadevall, Richard S. Fiske, R. B. Moore
1980, Open-File Report 80-504
The purpose of this report is to serve as a descriptive catalogue for drill core recovered from Kilauea Iki lava lake, from 1967 to 1979. Kilauea Iki lava lake was formed when lavas of the 1959 summit eruption were ponded in Kilauea Iki pit crater, a large pit crater...
Modern chrysomonad cysts from Alta Morris Lake, El Dorado County, California
David P. Adam, Albert D. Mahood
1980, Open-File Report 80-822
Simulated effects of ground-water development on potentiometric surface of the Floridan Aquifer, west-central Florida
William Edward Wilson, James M. Gerhart
1980, Open-File Report 79-1271
A digital model of two-dimensional ground-water flow was used to predict changes in the potentiometric surface of the Floridan aquifer, 1976-2000, in a 5,938-square-mile area of west-central Florida. In 1975, ground water withdrawn from the Floridan aquifer for irrigation, phosphate mines, other industries, and municipal supplies averaged about 649 million...
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...
Trends in the distribution of recent foraminifera in San Francisco Bay
R.E. Arnal, P. J. Quinterno, T. J. Conomos, Ralph Gram
1980, Cushman Foundation Special Publication (19) 17-39
Much of the bathymetry of the southern part of San Francisco Bay reflects the drainage pattern of late Pleistocene streams. Holocene estuarine silt and clay cover most of the bay floor; relict eolian and deltaic sand occurs along the eastern shore; sandy patches are present in the main channel owing...
Coastal ocean dynamics
J. Allen, R. Beardsley, W. Brown, D.A. Cacchione, R. Davis, C. Friehe, W. Grant, Adriana Huyer, J. Irish, M. Janopaul, A. Williams, Clinton D. Winant
1980, Eos, Transactions, American Geophysical Union (64) 538-540
The main objective of the Coastal Ocean Dynamics Experiment (CODE) is to observe and describe the response of continental shelf waters to strong atmospheric forcing in a relatively simple geomorphological setting. In order to achieve this goal, CODE has been designed (1) to define the different space and time scales...
Palladium, platinum, and rhodium concentrations in mafic and ultramafic rocks from the Zhob Valley and Dargai complexes, Pakistan
Norman J. Page, Joseph Haffty, Zaki Ahmad
1980, Professional Paper 1124-F
The Zhob Valley and Dargai complexes, Pakistan, consist of harzburgite and dunite tectonites containing chromite deposits, pyroxenite, wehrlite, and gabbro. Both are ophiolite complexes. Palladium, platinum, and rhodium were found in concentrations of up to 170, 200, and 22 parts per billion, respectively. Average concentrations for both complexes and all...
Lateral trends and vertical sequences in estuarine sediments, Willapa Bay, Washington
H. Edward Clifton, L. Phillips
1980, Conference Paper
Willapa Bay is a sizable estuary on the southern coast of Washington- Relatively unmodified in a geologic sense by human activity the bay provides an excellent example of modern depositional facies in an estuarine setting. Studies of these deposits indicate that consistent lateral trends exist in sediment texture and sedimentary...
Research on interactive genetic-geological models to evaluate favourability for undiscovered uranium resources
W.I. Finch, H.C. Granger, R.D. Lupe, R.B. McCammon
1980, Conference Paper, Uranium Evaluation and Mining Techniques: Proceedings of a Symposium Held in Buenos Aires, Argentina, 1–4 October 1979
Current methods of evaluating favourability for undiscovered uranium resources are unduly subjective, quite possibly inconsistent and, as a consequence, of questionable reliability. This research is aimed at reducing the subjectivity and increasing the reliability by designing an improved method that depends largely on geological data and their statistical frequency of...
The effect of band loss on estimates of annual survival
Louis J. Nelson, David R. Anderson, Kenneth P. Burnham
1980, Journal of Field Ornithology (51) 30-38
Banding has proven to be a useful technique in the study of population dynamics of avian species. However, band loss has long been recognized as a potential problem, (Hickey, 1952; Ludwig, 1967). Recently, Brownie et al. (1978) presented 14 models based on an array of explicit assumptions for...
Aeromagnetic and radio echo ice-sounding measurements show much greater area of the Dufek intrusion, Antarctica
John C. Behrendt, D.J. Drewry, E. Jankowski, M. S. Grim
1980, Science (209) 1014-1017
A combined aeromagnetic and radio echo ice-sounding survey made in 1978 in Antarctica over the Dufek layered mafic intrusion suggests a minimum area of the intrusion of about 50,000 square kilometers, making it comparable in size with the Bushveld Complex of Africa. Comparisons of the magnetic and...
Biological considerations in the delineation of critical habitat
Richard R. Knight
1980, Book chapter, Bears: Their biology and management
Grizzly bears (Ursus arctos) require large areas to satisfy their needs for food, cover, and space. They thrive best where disturbance by man is minimal. It is not a coincidence that the two major grizzly bear populations in the lower 48 states exist in large wilderness systems closely associated with...
Sediment waves on the Monterey fan levee: a preliminary physical interpretation.
William R. Normark, Gordon R. Hess, D.A.V. Stow, A.J. Bowen
1980, Marine Geology (37) 1-18
Sediment waves on the deep ocean floor occur mostly on the lower continental rise on slopes of 1° or less. Previous studies show that their amplitude and wavelength vary greatly, but little is known about their shape in plan. A detailed survey of a 30-km2 area of abyssal-depth sediment waves associated...
