Digital model simulation of the hydrologic flow system, with emphasis on ground water in Spokane Valley, Washington and Idaho
E.L. Bolke, J.J. Washington
1980, Open-File Report 80-1300
A digital-computer model of the hydrologic flow system, with emphasis on ground water, was developed for Spokane Valley, Washington and Idaho. The current rate of ground-water pumping in Spokane Valley has little effect on water levels in the Spokane aquifer, although short-term water-level declines occur locally. The model was used...
Land use and land cover, 1973-74, San Antonio, Texas
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 141
Land use and land cover, 1972-75, San Diego, California
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 125
Land use and land cover, 1973-76, Waco, Texas
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 200
Land use and land cover, 1972-74, West Point, Mississippi; Alabama
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 95
Geology and ground water in north-central Santa Cruz County, California
Michael J. Johnson
1980, Water-Resources Investigations Report 80-26
North-central Santa Cruz County is underlain mainly by folded sedimentary rocks of Tertiary and Cretaceous age that have been highly fractured by movements in the San Andreas fault system. Ground water is stored in fractures within shale and mudstone formations and in intergranular pore spaces within fine- to very fine-grained...
Land use and land cover, 1975, Limon, Colorado; Kansas
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 191
Distribution of nitrate in the unsaturated zone, Highland-East Highlands area, San Bernardino County, California
John M. Klein, Wesley L. Bradford
1980, Water-Resources Investigations Report 80-48
Nitrogen in the unsaturated soil zone in the Highland-East Highlands area of San Bernardino County, Calif., has been suspected as the source of nitrate in water from wells. Plans to recharge the local aquifers with imported surface water would raise the water table and intercept that nitrogen. This study was...
Temperature and solute-transport simulation in streamflow using a Lagrangian reference frame
Harvey E. Jobson
1980, Water-Resources Investigations Report 81-2
A computer program for simulating one-dimensional, unsteady temperature and solute transport in a river has been developed and documented for general use. The solution approach to the convective-diffusion equation uses a moving reference frame (Lagrangian) which greatly simplifies the mathematics of the solution procedure and dramatically reduces errors caused by...
Statistical analyses of surface-water-quality variables in the coal area of southeastern Montana
J. R. Knapton, Rodger F. Ferreira
1980, Water-Resources Investigations Report 80-40
Since 1974 a network of water-quality stations has been operated in the coal area of southeastern Montana. This report updates a previous report with 2 years of additional data collection and presents statistics and regression equations for water-quality variables. The most apparent feature of the study is the variability of...
Land use and land cover, 1973, Cape Flattery, Washington, United States; British Columbia, Canada (U.S. portion only)
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 117
Aeromagnetic map of part of the southeastern United States
Isidore Zietz, F. P. Gilbert
1980, Geophysical Investigations Map 937
Simulation of water-quality data at selected stream sites in the Missouri River Basin, Montana
J. R. Knapton, M.A. Jacobson
1980, Water-Resources Investigations Report 80-76
Modification of sampling programs at some water-quality stations in the Missouri River basin in Montana has eliminated the means by which solute loads have been directly obtained in past years. To compensate for this loss, water-quality and streamflow data were statistically analyzed and solute loads were simulated using computer techniques.Functional...
Geologic map and structure sections of the Cokeville 30-minute Quadrangle, Lincoln and Sublette counties Wyoming
W.W. Rubey, S.S. Oriel, J. I. Tracey
1980, IMAP 1129
Investigation of artificial recharge of aquifers in Nebraska
William F. Lichtler, David I. Stannard, Edwin Kouma
1980, Water-Resources Investigations Report 80-93
Large withdrawals of ground water for irrigation are causing progressive declines of ground-water levels in some areas of Nebraska. An investigation was conducted to determine the technical feasibility of artificially recharging aquifers through wells and through surface spreading by means of impoundments, pits, and canals. Information gained from a literature...
Water-quality monitoring of three major tributaries to the Chesapeake Bay: Interim data report
David J. Lang, David Grason
1980, Water-Resources Investigations Report 80-78
The U.S. Geological Survey is monitoring the water quality of three major tributaries to Chesapeake Bay at their fall lines to obtain estimates of constituent inputs potentially available to the bay. The monitoring sites are: Susquehanna River at Conowingo, Md.; Potomac River at Washington, D.C.; and James River at Cartersville,...
Hydrates of natural gas; a review of their geologic occurrence
Keith A. Kvenvolden, Mark A. McMenamin
1980, Circular 825
Land use and land cover, 1976, Gallup, New Mexico; Arizona
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 184
Land use and land cover, 1974-75, Oregon City, Oregon
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 161
Evaluation of selected dam-break flood-wave models by using field data
Larry F. Land
1980, Water-Resources Investigations Report 80-44
Land use and land cover, 1976, Stillwater, Minnesota; Wisconsin
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 198
Preliminary geologic map of the Richmond quadrangle, Alameda and Contra Costa counties, California
T. W. Dibblee Jr.
1980, Open-File Report 80-1100
Land use and land cover, 1974-75, Wolf Point, Montana
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 170
Land use and land cover, 1972, Glens Falls, New York; New Hampshire, Vermont
Water Resources Division, U.S. Geological Survey
1980, Land Use and Land Cover 185
Computer routines for probability distributions, random numbers, and related functions
W.H. Kirby
1980, Open-File Report 80-448
Use of previously codes and tested subroutines simplifies and speeds up program development and testing. This report presents routines that can be used to calculate various probability distributions and other functions of importance in statistical hydrology. The routines are designed as general-purpose Fortran subroutines and functions to be called from...
