Digital model analysis of the principal artesian aquifer, Savannah, Georgia area
H. B. Counts, R.E. Krause
1977, Water-Resources Investigations Report 76-133
A digital model of the principal artesian aquifer has been developed for the Savannah, Georgia, area. The model simulates the response of the aquifer system to various hydrologic stresses. Model results of the water levels and water-level changes are shown on maps. Computations may be extended in time, indicating changes...
Stochastic analysis of particle movement over a dune bed
Baum K. Lee, Harvey E. Jobson
1977, Professional Paper 1040
Stochastic models are available that can be used to predict the transport and dispersion of bed-material sediment particles in an alluvial channel. These models are based on the proposition that the movement of a single bed-material sediment particle consists of a series of steps of random length separated by rest...
Theoretical drawdown due to simulated pumpage from the Ohio River alluvial aquifer near Siloam, Kentucky
J. M. Kernodle
1977, Water-Resources Investigations Report 77-24
Theoretical drawdown due to simulated pumpage was determined for a site near Siloam, Kentucky by using a digital ground-water-flow model. The maximum sustained yield of water from the single well was shown to be less than 900 gallons per minute, and, for a simulated pumping rate of 450 gallons per...
Guide for data collection to calibrate a predictive digital ground-water model of the unconfined aquifer in and near the city of Modesto, California
R. W. Page
1977, Water-Resources Investigations Report 76-41
The city of Modesto encompasses about 12 square miles in the northeastern part of the San Joaquin Valley, Calif. The ground-water model encompasses about 542 square miles. In the Modesto area, ground water occurs in an unconfined aquifer a confined aquifer. both of which are composed of unconsolidated materials, and...
A computer program to calculate the resistivity and induced polarization response for a three-dimensional body in the presence of buried electrodes
Jeffrey J. Daniels
1977, Open-File Report 77-153
Three-dimensional induced polarization and resistivity modeling for buried electrode configurations can be achieved by adapting surface integral techniques for surface electrode configurations to buried electrodes. Modification of. the surface technique is accomplished by considering the additional mathematical terms required to express-the changes in the electrical potential and geometry caused by...
Quality of rivers of the United States, 1974 water year: based on the National Stream Quality Accounting Network (NASQAN)
Richard O. Hawkinson, John F. Ficke, L.G. Saindon
1977, Open-File Report 77-151
The National Stream Quality Accounting Network (NASQAN) was established by the U.S Geological Survey to determine and compare the quality at key locations on the Nation 's major rivers. There are 345 stations in the network--data from the first 101 of these (those operating during the 1974 water year) are...
A digital model of the Floridan Aquifer, north of Tampa, Florida
A.F. Robertson, M. J. Mallory
1977, Water-Resources Investigations Report 77-64
A regional ground-water model of the Floridan aquifer was constructed for an 875-square-mile portion of the rapidly developing area north of Tampa Bay. The digital model was calibrated by comparing observed (March 1974 and May 1975) and computed potentiometric heads. A good comparison was obtained by adjusting leakance and transmissivity....
Structural and heat-flow implications of infrared anomalies at Mt. Hood, Oregon
Jules D. Friedman, David Frank
1977, Open-File Report 77-599
Surface thermal features occur in an area of 9700 m2 at Mt. Hood, on the basis of an aerial line-scan survey made April 26, 1973. The distribution of the thermal areas below the summit of Mt. Hood, shown on planimetrically corrected maps at 1:12,000, suggests structural control by a fracture...
Application of digital profile modeling techniques to ground-water solute transport at Barstow, California
Stanley G. Robson
1977, Open-File Report 77-276
Analog-model analysis of effects of waste-water management on the ground-water reservoir in Nassau and Suffolk counties, New York; Report III: Reduction and redistribution of ground-water pumpage
Arlen W. Harbaugh, Thomas E. Reilly
1977, Open-File Report 77-148
Water resources in western Cortland County, New York: hydrologic data for 1972-75 and progress report
Harold L. Shindel, William Buller, William H. Johnston
1977, Open-File Report 77-525
Basic data on the surface water, ground water, and water quality of Cortland County, New York, are presented with a short explanatory text. Seepage investigations showed that during periods of base flow, the surface-water regime cannot be predicted on the basis of flow-duration figures alone. The investigations also indicate that...
Hydrologic data for urban studies in the Houston, Texas, metropolitan area, 1975
C.E. Ranzau
1977, Open-File Report 77-274
Detailed rainfall-runoff computations, including hydrographs and mass curves, are presented for nine storm periods during the 1975 water year in drainage basins in the Houston, Texas metropolitan area. The information will be useful in determining the extent to which progressive urbanization will affect the yield and mode of occurrence of...
Limnology of selected lakes in Ohio, 1975
Robert L. Tobin, John D. Youger
1977, Water-Resources Investigations Report 77-105
Water-quality reconnaissance by the U.S. Geological Survey and Ohio Environmental Protection Agency, to evaluate the status of Ohio's lakes and reservoirs was begun in 1975 with studies of 17 lakes. Spring and summer data collections for each lake included: profile measurements of temperature, dissolved oxygen, pH, and specific conductance; field...
Characteristics of thin-skinned style of deformation in the southern Appalachians, and potential hydrocarbon traps
Leonard Dorrean Harris, Robert C. Milici
1977, Professional Paper 1018
This paper is an attempt to focus attention on the more important characteristics of the thin-skinned style of deformation in the southern Appalachians by presenting a model to illustrate the regional anatomy and to identify likely structures that need additional investigation as possible prospects for hydrocarbon accumulation. Five distinct changes...
User's guide for U.S. Geological Survey rainfall-runoff models; revised 1977
Philip Hadley Carrigan Jr., David E. Bower, G.R. Dempster
1977, Open-File Report 77-884
Modified versions of the rainfall-runoff model described by Dawdy, Lichty, and Bergmann (1972) (see W72-11754) are used in the U.S. Geological Survey as a means of synthesizing flood discharges for small drainage areas. Synthesized flood discharges derived through use of long-term (60-70 year) rainfall and evaporation data, provide a more...
Proceedings of the first annual William Pecora Memorial Symposium, October 1975, Sioux Falls, South Dakota
Priscilla W. Woll, William August Fischer, editor(s)
1977, Professional Paper 1015
The U.S. Geological Survey agreed to publish the proceeding of the first annual William T. Pecora Memorial Symposium in its Professional Paper series because the subject material is related to the mission of the Survey. The usual standards for this series have been modified to accommodate the variety of styles...
Geologic map of the Iapygia Quadrangle of Mars
G. G. Schaber
1977, IMAP 1020
The Iaygia quadrangle, in the equatorial region of Mars just north of the Hellas basin, is mainly ancient, hilly, and cratered upland terrain. The southern one-third of the quadrangle is dominated by mountains and knobby...
Frequency response of the USGS short period telemetered seismic system and its suitability for network studies of local earthquakes
Jerry P. Eaton
1977, Open-File Report 77-844
The USGS telemetered seismic system was intended primarily to record small to moderate earthquakes (magnitude 0 to 4) at distances of a few km to several hundred km. Its frequency response is such that the recorded background noise at a moderately quite Coast Range site has a relatively flat 'record'...
Factors limiting the sensitivity and dynamic range of a seismic system employing analog magnetic tape recording and a seismic amplifier with adjustable gain settings and several output levels
Jerry P. Eaton, John R. Van Schaack
1977, Open-File Report 77-224
In the course of modernizing the low-speed-tape-recorder portable seismic systems and considering the possibilities for the design of a cassette-tape-recorder seismic refraction system, the factors that limit the sensitivity and dynamic range of such systems have been reviewed. These factors will first be stated briefly, and then their influence on...
A theoretical analysis of fluid flow and energy transport in hydrothermal systems
Charles R. Faust, James W. Mercer
1977, Open-File Report 77-60
A mathematical derivation for fluid flow and energy transport in hydrothermal systems is presented. Specifically, the mathematical model describes the three-dimensional flow of both single- and two-phase, single-component water and the transport of heat in porous media. The derivation begins with the point balance equations for mass, momentum, and energy....
A FORTRAN program for calculating nonlinear seismic ground response
William B. Joyner
1977, Open-File Report 77-671
The program described here was designed for calculating the nonlinear seismic response of a system of horizontal soil layers underlain by a semi-infinite elastic medium representing bedrock. Excitation is a vertically incident shear wave in the underlying medium. The nonlinear hysteretic behavior of the soil is represented by a model...
Uranium mobility during interaction of rhyolitic glass with alkaline solutions: dissolution of glass
Robert A. Zielinski
1977, Open-File Report 77-744
This report concerns investigations designed to identify the important physical and chemical parameters influencing the rate of release of uranium from glass shards of rhyolitic air-fall ash. Oxidizing, silica undersaturated, alkaline solutions are eluted through a column of rhyolitic glass shards at a carefully controlled temperature, pressure, and flow rate....
Flow routing in the Susquehanna River Basin: Part I - Effects of Raystown Lake on the low-flow frequency characteristics of the Juniata and lower Susquehanna Rivers, Pennsylvania
Jeffrey T. Armbruster
1977, Water-Resources Investigations Report 77-12
A flow-routing model was used to simulate 17 water years of daily streamflows at five sites. The sites were Mapleton Depot and Newport, Pennsylvania, on the Juniata River, and Harrisburg and Marietta, Pennsylvania, and Conowingo, Maryland, on the Susquehanna River. The purpose for the simulations was to determine the effects...
Paleomagnetic investigation of late Quaternary sediments of south San Francisco Bay, California
John W. Hillhouse
1977, Open-File Report 77-457
Paleomagnetic inclinations of the Late Quaternary sediments of South San Francisco Bay were determined from bore hole samples collected near Dumbarton Bridge. The sediments consist of estuarine muds and nonmarine sand deposits, floored by bedrock of the Mesozoic Franciscan Formation. - Beneath Dumbarton Bridge the entire sedimentary fill is normally...
Water resources of the Umatilla Indian Reservation, Oregon
Joseph B. Gonthier, D.D. Harris
1977, Water-Resources Investigations Report 77-3
Water resources of the Umatilla Indian Reservation are poorly distributed both geographically and in time. On the reservation, only the Umatilla River and one of its principal tributaries, Meacham Creek, have significant perennial flows. Runoff of the principal streams is largely from snowmelt in the Blue Mountains and is highly...
