Flood-frequency analysis for small natural streams in Georgia
Harold G. Golden, McGlone Price
1976, Open-File Report 76-511
Flood information from 104 project basins (0.1 to 20 square miles) and data available from 170 larger basins (20 to 1,500 square miles) are analyzed to provide planners and designers with relations for estimating the magnitude and frequency of flood-peak discharges on small natural streams in Georgia. More than 90...
Reconnaissance of the water resources of the upper Klickitat River Basin, Yakima Indian Reservation, Washington
Denzel R. Cline
1976, Open-File Report 75-518
Large quantities of ground water and surface water are available in Washington County. Major sources of ground water are the Gosport Sand and Lisbon Formation undifferentiated, the Miocene Series undifferentiated, and alluvium and low terrace deposits. The Miocene, the most productive source of ground water, will yield 0.5 to 1.0...
A stochastic model for predicting the probability distribution of the dissolved-oxygen deficit in streams
I.I. Esen, R. E. Rathbun
1976, Professional Paper 913
Numerical simulation analysis of the interaction of lakes and ground water
Thomas C. Winter
1976, Professional Paper 1001
Because the interrelationship of lakes and ground water is perhaps the least understood aspect of lake hydrology, vertical-section, steadystate, numerical-model simulations were run to evaluate the factors that control the interaction of lakes and ground water. The study is concerned only with lakes encircled by water-table mounds that are at...
Programmable calculators; modern instruments for analyzing hydrologic data
David V. Maddy
1976, Open-File Report 75-642
Numerical model of the salt-wedge reach of the Duwamish River estuary, King County, Washington
Edmund A. Prych, W.L. Haushild, J.D. Stoner
1976, Professional Paper 990
A numerical model of a salt-wedge estuary developed by Fischer (1974) has been expanded and used to calculate the distributions of salinity, temperature, chlorophyll a concentration, biochemical oxygen demand, and dissolved-oxygen concentration in the Duwamish River estuary, King County, Wash. The model was used to predict the dissolved-oxygen concentrations in...
Shallow sedimentary framework of Georges Bank
R. S. Lewis, R. E. Sylwester
1976, Open-File Report 76-874
Two thousand nine hundred kilometers of minisparker data were collected on Georges Bank by the United States Geological Survey during October of 1975. Several sedimentary features have been observed in the data, The bank is recognized as a compound feature resulting from erosion of Tertiary coastal-plain strata followed by deposition...
Distribution of seed plants with respect to tide levels and water salinity in the natural tidal marshes of the northern San Francisco Bay Estuary, California
Brian F. Atwater, Charles W. Hedel
1976, Open-File Report 76-389
Shoaling of subtidal and intertidal mud flats has permitted tidal marshes to spread across large marginal areas of the San Francisco Bay estuary during the past several thousand years. By 1850 A.D. the tidal marshes of the estuary, including those of the Sacramento - San Joaquin Delta, covered an area...
Geology and ore deposits of the Mahd Adh Dhahab District, Kingdom of Saudi Arabia
Robert W. Luce, Abdulaziz Bagdady, Ralph Jackson Roberts
1976, Open-File Report 76-865
Mahd adh Dhahab is the principal gold-silver mine in Saudi Arabia; it was productive during three principal periods, two during ancient times (about 950 B.C. and 750-1258 A.D.) and one in modern times (1939-54). The early production is not known, but the recorded production in 1939-54 is 765,768 fine ounces...
Fluid-Inclusion Petrology - Data from Porphyry Copper Deposits and Applications to Exploration
J. Thomas Nash
1976, Professional Paper 907-D
Fluid-inclusion studies of 37 porphyry copper deposits, mainly in the United States, demonstrate that all but 3 evolved through a hydrothermal stage characterized by very high salinities, generally in excess of about 35 weight percent NaCI equivalent. Temperatures of these fluids ranged from about 250 deg to 700 deg C...
Documentation of programs that compute 1) static tilts for a spatially variable slip distribution, and 2) quasi-static tilts produced by an expanding dislocation loop with a spatially variable slip distribution
Stuart McHugh
1976, Open-File Report 76-578
The material in this report is concerned with the effects of a vertically oriented rectangular dislocation loop on the tilts observed at the free surface of an elastic half-space. Part I examines the effect of a spatially variable static strike-slip distribution across the slip surface. The tilt components as a...
Tilt changes of short duration
Stuart McHugh
1976, Open-File Report 76-750
Section I of this report contains a classification scheme for short period tilt data. For convenience, all fluctuations in the local tilt field of less than 24 hours duration will be designated SP (i.e., short period) tilt events. Three basic categories of waveshape appearance are defined, and the rules for...
Interpretation of magnetic surveys in intermontane valleys of Nevada and southern New Mexico
G. D. Bath
1976, Open-File Report 76-440
An evaluation of the magnetic method of geophysical exploration in intermontane valleys is made through examples of magnetic properties, magnetic surveys, reduction of data, and analysis of magnetic anomalies from some valley areas. Measurements of magnetic properties of samples collected along valley margins or from drill holes indicate that the...
Calibration of a mathematical model of the Antelope Valley ground-water basin, California
Timothy J. Durbin
1976, Open-File Report 76-833
Documentation of finite-difference model for simulation of three-dimensional ground-water flow
Peter C. Trescott, S. P. Larson
1976, Open-File Report 76-591
User experience has indicated that the documentation of the model of three-dimensional ground-water flow (Trescott and Larson, 1975) should be expanded. This supplement is intended to fulfill that need. The original report emphasized the theory of the strongly implicit procedure, instructions for using the groundwater-flow model, and practical considerations for...
Q-mode factor analysis of geochemical and petrologic data matrices with constant row-sums
A.T. Miesch
1976, Professional Paper 574-G
SELECT, EXTRACT, SETUP: a set of computer programs for searching and modifying local earthquake data
J. Alan Steppe
1976, Open-File Report 76-342
Depositional environments of the Eagle Sandstone, north-central Montana-- an aid for hydrocarbon exploration (modified from a talk presented to the Rocky Mountain Section AAPG-SEPM Meeting, Billings, Montana, March 30, 1976)
Dudley D. Rice
1976, Open-File Report 76-423
A modification of Shapiro's technique for determining low levels of CO 2 in silicate rocks
John R. Watterson, Walter H. Ficklin, John Hopkins Turner
1976, Open-File Report 76-530
Textural and mineralogical study of sandstones from the onshore Gulf of Alaska Tertiary Province, southern Alaska
Gary R. Winkler, Hugh McLean, George Plafker
1976, Open-File Report 76-198
Petrographic examination of 74 outcrop samples of Paleocene through Pliocene age from the onshore Gulf of Alaska Tertiary Province indicates that sandstones of the province characteristically are texturally immature and mineralogically unstable. Diagenetic alteration of framework grains throughout the stratigraphic sequence has produced widespread zeolite cement or phyllosilicate grain coatings...
The evolution of the Landsat color composite; a slide-cassette training module
Ronald J. Peterson, William J. Redmond
1976, Open-File Report 76-390
No abstract available....
Numerical modeling of subsurface radioactive solute transport from waste seepage ponds at the Idaho National Engineering Laboratory
John B. Robertson
1976, Open-File Report 76-717
Aqueous chemical and low-level radioactive effluents have been disposed to seepage ponds since 1952 at the Idaho National Engineering Laboratory. The solutions percolate toward the Snake River Plain aquifer (135 m below) through interlayered basalts and unconsolidated sediments and an extensive zone of ground water perched on a sedimentary layer...
CABFAC/USGS, a FORTRAN program for Q-mode factor analysis of stratigraphically ordered samples
David P. Adams
1976, Open-File Report 76-216
This program is a revision of the CABFAC program of Kovan and Imbrie (1971) which incorporates the following improvements: each factor is plotted against depth on the printer; samples are ordered stratigraphically by the program, so that input data need not be ordered stratigraphically; an option has been added to...
Status of ground-water modeling in the U.S. Geological Survey
Charles A. Appel, J.D. Bredehoeft
1976, Circular 737
The U.S. Geological Survey is active in the development and use of models for the analysis of various types of ground-water problems. Types of problems for which models have been, or are being, developed include: (1) ground-water flow in saturated or partially unsaturated materials, (2) land subsidence resulting from ground-water...
Model for evaluating the effects of dikes on the water and salt balance of Great Salt Lake, Utah
K.M. Waddell, Fred K. Fields
1976, Open-File Report 76-256
No abstract available....
