Lead isotope data bank; 2,624 samples and analyses cited
Bruce R. Doe
1976, Open-File Report 76-201
The Lead Isotope Data Bank (LIDB) was initiated to facilitate plotting data. Therefore, the Bank reflects data most often used in plotting rather than comprises a comprehensive tabulation of lead isotope data. Up until now, plotting was done using card decks processed by computer with tapes plotted by a Gerber...
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...
Geologic interpretation of an aeromagnetic map of the west-central Columbia Plateau, Washington and Oregon
Donald A. Swanson, Thomas L. Wright, Isidore Zietz
1976, Open-File Report 76-51
A low altitude, total intensity aeromagnetic map of the ?west-central Columbia Plateau, underlain principally by the Yakima Basalt,. shows Positive and negative anomalies that stand out from a moderate intensity .background reflecting .interbedded flows of normal and reversed magnetic polarity. One set of anomalies is related to anticlinal ridges, nother...
Q-mode factor analysis of geochemical and petrologic data matrices with constant row-sums
A.T. Miesch
1976, Professional Paper 574-G
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...
Computer simulation model of the Pleistocene valley-fill aquifer in southwestern Essex and southeastern Morris counties, New Jersey
Harold Meisler
1976, Water-Resources Investigations Report 76-25
A finite-difference digital computer model was developed to simulate a buried valley-fill aquifer consisting of outwash sand and gravel deposited in a series of valleys cut into bedrock of Triassic age. Till, clay, silt, and muck function as an overlying semiconfining layer. The bedrock which is represented as an unconfined...
Time of travel of solutes in the East Fork Trinity River, November 1975; and Elm Fork Trinity River, December 1975; Trinity River basin, Texas
Dennis R. Myers, Raymond M. Slade Jr.
1976, Open-File Report 76-683
The U.S. Geological Survey, in cooperation with the North Central Texas Council of Governments, the Trinity River Authority of Texas, and the Texas Water Development Board, conducted two time-of-travel studies in the Trinity River basin in November and December, 1975. Field data were collected on the East Fork Trinity River...
Reaeration-coefficient measurements of 10 small streams in Wisconsin using radioactive tracers : with a section on the energy-dissipation model
R. Stephen Grant
1976, Water-Resources Investigations Report 76-96
Reaeration-rate coefficients were measured for 10 small streams in Wisconsin using the radioactive-tracer method. The coefficients ranged from 2.06 to 55.2 per day (base e at 25 degrees Celsius). Stream discharges ranged from 0.3 to 37.0 cubic feet per second, most discharges being less than 10 cubic feet per second....
Measured and simulated ground-water levels in the Franklin area, southeastern Virginia
O. J. Cosner
1976, Water-Resources Investigations Report 76-83
The Lower Cretaceous aquifer is the principal source of water in Southeastern Virginia. Synoptic water-level measurements made since 1970 have been used to verify a digital model of the aquifer. Measurements made in December 1973, August and December 1974 were used to further verify the model, using updated pumpage for...
A model for calculating effects of liquid waste disposal in deep saline aquifer
Inc. Intercomp Resource Development and Engineering
1976, Water-Resources Investigations Report 76-61
Injection of liquid industrial wastes into confined underground saline aquifers can offer a good disposal alternative from both environmental and economic considerations. One of the needs in choosing from among several disposal alternatives is a means of evaluating the influence such an injection will have on the aquifer system. This...
Digital-model analysis to predict water levels in a well field near Columbus, Indiana
Michael Planert
1976, Water-Resources Investigations Report 76-63
Columbus, Indiana, obtains its water supply from six municipally owned wells southwest of the city. The wells are screened in an outwash sand and gravel aquifer that was deposited by glacial melt water in a preglacial bedrock valley. The well field is midway between the East Fork White River and...
Availability of ground water near Carmel, Hamilton County, Indiana
D. C. Gillies
1976, Water-Resources Investigations Report 76-46
A study of the hydraulic characteristics of the unconsolidated glacial deposits near the city of Carmel in central Indiana shows that 21.3 million gallons per day (933 litres per second) of additional water could be withdrawn from the aquifer for an indefinite period of time . This pumpage is approximately...
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...
Lakes Marion-Moultrie stream system investigation, South Carolina : Part II-Simulation Studies
H.H. Jeffcoat, M.E. Jennings, D.L. Collins, J.O. Shearman
1976, Water-Resources Investigations Report 76-11
A stream-reservoir model was developed to simulate the operation of the Lakes Marion-Moultrie, South Carolina, reservoir system. The reservoir system is operated under the assumption of a 3-day prior knowledge of inflows. This information is attainable from the ooperational reservoir-inflow forecasting model developed in the Part I report. The model,...
Hydrology and sedimentation of Bixler Run Basin, central Pennsylvania
Lloyd A. Reed
1976, Water Supply Paper 1798-N
Rainfall, streamflow, stream chemical, and sediment discharge data were collected from Bixler Run near Loysville, Pa., during the period from February 1954 to September 1969 as part of a project to evaluate sediment discharge from an agricultural area in which soil-conservation techniques were being adopted at a moderate rate. The...
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
WATEQF; a FORTRAN IV version of WATEQ : a computer program for calculating chemical equilibrium of natural waters
Niel Plummer, Blair F. Jones, Alfred Hemingway Truesdell
1976, Water-Resources Investigations Report 76-13
WATEQF is a FORTRAN IV computer program that models the thermodynamic speciation of inorganic ions and complex species in solution for a given water analysis. The original version (WATEQ) was written in 1973 by A. H. Truesdell and B. F. Jones in Programming Language/one (PL/1.) With but a few exceptions,...
Implications of a magnetic model of the Long Valley Caldera, California
D.L. Williams
1976, Open-File Report 76-439
SELECT, EXTRACT, SETUP: a set of computer programs for searching and modifying local earthquake data
J. Alan Steppe
1976, Open-File Report 76-342
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....
Selection of streamflow and reservoir-release models for river-quality assessment
Marshall E. Jennings, James O. Shearman, Daniel P. Bauer
1976, Circular 715-E
For nearly half a century the Willamette River in Oregon experienced severe dissolved-oxygen problems related to large loads of organically rich waste waters from industries and municipalities. Since the mid-1950 's dissolved oxygen quality has gradually improved owing to low-flow augmentation, the achievement of basinwide secondary treatment, and the use...
Programmable calculators; modern instruments for analyzing hydrologic data
David V. Maddy
1976, Open-File Report 75-642
Hydrologic reconnaissance of the geothermal area near Klamath Falls, Oregon
E.A. Sammel, D. L. Peterson
1976, Water-Resources Investigations Report 76-127
Geothermal phenomena observed in the vicinity of Klamath Falls include hot springs with temperatures that approach 204°F (96 o C) (the approximate boiling temperature for the altitude), steam and water wells with temperatures that exceed 212°F (100°C), and hundreds of warm-water wells with temperatures mostly ranging from 68° to 95°F...
Floods in Pennsylvania: A manual for estimation of their magnitude and frequency
Herbert N. Flippo Jr.
1976, Open-File Report 76-391
Regression equations are provided for estimation of flood magnitude and frequency on unregulated and unurbanized streams in Pennsylvania. Frequency-discharge profiles are shown for regulated reaches on eleven major streams. These regression equations and discharge profiles enable the design engineer to estimate flood-frequency characteristics for almost all streams that drain more...
Mathematical model of the West Bolsa Ground-water Basin, San Benito County, California
Robert E. Faye
1976, Water-Resources Investigations Report 76-71
Simulation of the West Bolsa ground-water basin hydrology in California had provided values of basin recharge and discharge and nodally distributed values of transmissivity and storage coefficient. Average net recharge from April 1945 to March 1969 was 6.2 cubic feet per second and occurred as subsurace recharge and infiltration of...
