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...
Field survey of intensity for the earthquake of July 27, 1980, Sharpsburg, Kentucky
Margaret G. Hopper, B. Glen Reagor
1980, Open-File Report 80-1242
The magnitude 5.2 (mb) northern Kentucky earthquake of July 27, 1980, at 18:52:21.8 UTC, located at 38.17N, 83.91W with a depth of 8 km (as determined by the National Earthquake Information Service), was particularly notable for the widespread damage it did, especially to older chimneys. Investigators from several different organizations...
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...
Field studies of borehole gamma-ray spectrometer methods for mineral exploration; a selected bibliography
Frank E. Senftle
1980, Open-File Report 80-503
A finite-difference digital model was developed to simulate the effects of a proposed well field on the water levels in existing wells in the Salt River Indian Reservation, which is in the southeastern part of Paradise Valley in central Arizona. The model area includes about 600 square miles in Paradise...
Relationships between basic soils-engineering equations and basic ground-water flow equations
Donald G. Jorgensen
1980, Water Supply Paper 2064
The many varied though related terms developed by ground-water hydrologists and by soils engineers are useful to each discipline, but their differences in terminology hinder the use of related information in interdisciplinary studies. Equations for the Terzaghi theory of consolidation and equations for ground-water flow are identical under specific conditions....
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...
A one-dimensional, steady-state, dissolved-oxygen model and waste-load assimilation study for Little Lick and Big Lick Creeks, Blackford and Delaware counties, Indiana
James G. Peters, Charles G. Crawford, William G. Wilber
1980, Open-File Report 80-73
The Indiana State Board of Health is developing a State water-quality management plan that includes establishing limits for liquid wastes discharged into Indiana streams. A digital computer model was used to predict alternatives for future waste loadings on Little Lick and Big Lick Creeks that would be compatible with Indiana...
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...
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
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...
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...
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...
Hydraulic characteristics of an underdrained irrigation circle, Muskegon County wastewater disposal system, Michigan
M.G. McDonald
1980, Open-File Report 80-773
Muskegon County, Michigan, disposes of wastewater by spray irrigating farmland on its waste-disposal site. Buried drains in the highly permeable unconfined aquifer at the site control the level of the water table. Hydraulic conductivity of the aquifer and drain-leakance, the reciprocal of resistance to flow into the drains, was determined...
Ground-water availability and water quality in Farmington, Connecticut
David L. Mazzaferro
1980, Open-File Report 80-751
The strataified-drift aquifer in Farmington, Conn., is capable of yielding large amounts of water to individual wells. About 14 square miles of Farmington is underlain by stratified-drift deposits which, in places, are more than 450 feet thick. The most productive deposits are found in the Farmington River valley, from Unionville...
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...
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...
Interim report on the investigation of flooding in the Tug Fork basin of Kentucky, Virginia, and West Virginia
Arthur G. Scott
1980, Open-File Report 80-1188
An analytical plan is presented for a study of the effects of land-use changes on the magnitude and frequency of flood-peak flows and on sediment characteristics of the Tug Fork in Kentucky, Virginia, and West Virginia. The plan includes compilation and analysis of available data, collection of new data on...
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...
Development and use of a mathematical model of the San Bernardino Valley ground-water basin, California
William F. Hardt, C. B. Hutchinson
1980, Open-File Report 80-576
Part of the San Bernardino urbanized area in California overlies formerly swampy lands with a history of flowing wells. This area , upgradient from and adjacent to the San Jacinto fault, contains a zone in an alluvial ground-water basin that is under artesian pressure. Since 1945, withdrawals have exceeded recharge...
Preliminary simulated tidal flow and circulation patterns in Hillsborough Bay, Florida
Carl R. Goodwin
1980, Open-File Report 80-1021
The effect of channel dredging and island construction on tidal flow and circulation in Hillsborough Bay, Fla., due to the Tampa Harbor Deepening Project is being investigated using a two-dimensional, finite-difference numerical model. Preliminary model results are presented as a series of maps showing tidal flood, tidal ebb, and circulation...
Estimation of background loadings and concentrations of phosphorus for lakes in the Puget Sound region, Washington
Robert J. Gilliom
1980, Open-File Report 80-328
For lakes in watersheds that include developed land, evaluation of eutrophication is facilitated by knowledge of changes in the lakes ' phosphorus concentration since development. A method is described for estimating background phosphorus concentration in lakes of the Puget Sound lowland, Washington. Using a mass-balance ' Vollenweider-type ' model, phosphorus...
Summary of water-quality data for selected streams in Colorado
M.W. Gaydos
1980, Open-File Report 80-682
This report presents the first statewide summary of water-quality data for selected streams in Colorado. Included in the report are a tabulation of the 165 surface-water-sampling sites for which five or more analyses of major chemical constituents were available at the end of the 1978 water year and a tabulation...
Helicopter airborne electromagnetic survey (using the Dighem II system) of parts of the Lake City caldera, Hinsdale County, Colorado
D.C. Fraser, Z. Dvorak
1980, Open-File Report 80-917
The data presented herein is from an airborne electromagnetic-resistivity-survey conducted by Dighem Limited of Toronto Canada for the U.S. Geological Survey. The area surveyed is located in the western San Juan Mountains near Lake City, Colorado. The general area covered is between 37°45' and 38° latitude north and 107°15' and...
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
Program MQLVEMCPL; Marquardt inversion of electromagnetic coupling data for a layered halfspace model with complex conductivities
James P. Kauahikaua, Walter L. Anderson
1980, Open-File Report 80-1158
