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...
Water quality of selected streams in the coal area of southeastern Montana
J. R. Knapton, P. W. McKinley
1977, Water-Resources Investigations Report 77-80
This report summarizes and evaluates water-quality data collected at 35 stream sites the the coal region of southeastern Montana. Sarpy Creek, Armells Creek, and Rosebud Creek sometimes have dissolved-solids concentrations that cause water to be marginal for agricultural purposes. At times of rainfall and snowmelt, the runoff water mixes with...
Artificial-recharge tests in Upper Black Squirrel Creek basin, Jimmy Camp Valley, and Fountain Valley, El Paso County, Colorado
P.J. Emmons
1977, Water-Resources Investigations Report 77-11
Artificial-recharge tests were conducted in the alluvium in upper Black Squirrel Creek basin, the alluvium in Jimmy Camp Valley, and in the alluvium overlying the Widefield aquifer which is located in an ancestral channel in Fountain Valley, Colo. Nine artificial-recharge pits with areas of approximately 9,200 square feet each were...
Hydrologic evaluation of the Arikaree Formation near Lusk, Niobrara and Goshen counties, Wyoming
M. A. Crist
1977, Water-Resources Investigations Report 77-111
The Arikaree Formation of early Miocene age is an aquifer of large areal extent and is composed of very fine grained, poorly bedded, loosely to moderately cemented sandstone and interbedded silt, limestone, and many concretionary layers. The area studied is about 800 square miles in southern Niobrara and northern Goshen...
Evaporation from seven reservoirs in the Denver water-supply system, central Colorado
John F. Ficke, D. Briane Adams, T. W. Danielson
1977, Water-Resources Investigations Report 76-114
Seven reservoirs in central Colorado, operated by the Denver Board of Water Commissioners, were studied during 1967-73 to determine evaporation losses. These reservoirs, Elevenmile Canyon, Dillon, Gross, Antero, Cheesman, Williams Fork, and Ralston, are located on both sides of the Continental Divide. Methods for computing evaporation include energy-budget, mass-transfer, and...
Ground-water resources of the alluvial aquifers in northeastern Larimer County, Colorado
R. T. Hurr, P.A. Schneider
1977, Water-Resources Investigations Report 77-7
Ground water is a source of municipal, domestic, stock, and irrigation supply for most of northeastern Larimer County, Colo. A study of the alluvial aquifers in the northeastern part of the county was conducted to determine volume of water in storage, rate and location of ground-water withdrawals, and chemical quality...
Frequency analysis of Illinois floods using observed and synthetic streamflow records
George W. Curtis
1977, Water-Resources Investigations Report 77-104
Equations, applicable Statewide, for estimating flood magnitudes having recurrence intervals ranging from 2 to 500 years for unregulated rural streams, with drainage areas ranging from 9.02 to 10,000 square miles (0.05 to 25,900 sqiiare kilometers), were derived by multiple regression an. A rainfall-runoff model was used in the synthesis of...
Technique for estimating magnitude and frequency of floods in Illinois
George W. Curtis
1977, Water-Resources Investigations Report 77-117
A technique is presented for estimating flood magnitudes at recurrence intervals ranging from 2 to 500 years, for unregulated rural streams in Illinois, with drainage areas ranging from 0.02 to 10,000 square miles. Multiple regression analyses, using streamflow data from 241 sampling sites, were used to define the flood-frequency relationships....
Map showing earthquake intensity zonation and distribution of Quaternary deposits San Mateo, Santa Cruz, and Monterey counties, California
1977, Miscellaneous Field Studies Map 903
This map is one in a series of six geologic hazards maps being compiled by the U.S. Geological Survey for use by the California Coastal Commission-Central Coast Regional Commission and other planners within the tri-county region. This map is intended for general use in first-step planning and is not a substitute...
Mineral resources of the Joyce Kilmer-Slickrock Wilderness, North Carolina-Tennessee
Frank Gardner Lesure, E. R. Force, J. F. Windolph, J. J. Hill
1977, Bulletin 1416
No abstract available....
Geology of the Yreka Quadrangle, Siskiyou County, California
Preston Enslow Hotz
1977, Bulletin 1436
Mineral resources of the Jarbidge Wilderness and adjacent areas, Elko County, Nevada, with a section on interpretation of aeromagnetic data
Robert Roy Coats, R.C. Green, L.D. Cress, L. Y. Marks, W. E. Davis
1977, Bulletin 1439
Mineral resources of the Ramseys Draft Wilderness Study Area, Augusta County, Virginia
Frank Gardner Lesure, P. J. Geraci, P. C. Mory, B. B. Williams
1977, Bulletin 1397-C
Stewart Gulch Tongue — A new tongue of the Eocene Green River Formation, Piceance Creek basin, Colorado
William James Hail Jr.
1977, Bulletin 1422-E
No abstract available....
The Maudlow and Sedan Formations of the Upper Cretaceous Livingston Group on the west edge of the Crazy Mountains basin, Montana
Betty Skipp, Laura W. McGrew
1977, Bulletin 1422-B
Geology and mineral deposits of the Needle Mountains District, southwestern Colorado
Leonard J. Schmitt, William H. Raymond
1977, Bulletin 1434
Geology of the Red Mountain mining district, Esmeralda County, Nevada
William J. Keith
1977, Bulletin 1423
Geochemical exploration techniques based on distribution of selected elements in rocks, soils, and plants, Vekol porphyry copper deposit area, Pinal County, Arizona
Maurice A. Chaffee
1977, Bulletin 1278-E
Mineral resources of the proposed additions to the Scapegoat Wilderness, Powell and Lewis and Clark counties, Montana, with a section on geophysical surveys
Robert L. Earhart, D. J. Grimes, R. W. Leinz, L. Y. Marks, D. L. Peterson
1977, Bulletin 1430
Weak-field magnetic susceptibility anisotropy and its dynamic measurement
William F. Hanna
1977, Bulletin 1418
Changes in stratigraphic nomenclature by the U.S. Geological Survey, 1976
Norman F. Sohl, W.B. Wright
1977, Bulletin 1435-A
No abstract available....
Eocene rocks in northeast Washington: Radiometric ages and correlation
Robert Carl Pearson, John D. Obradovich
1977, Bulletin 1433
No abstract available....
The Permian and Triassic Seven Devils Group, western Idaho and northeastern Oregon
Tracy L. Vallier
1977, Bulletin 1437
Volcanogenic Permian and Triassic rocks in the Snake River Canyon of western Idaho and northeastern Oregon and in the adjacent Seven Devils Mountains of western Idaho are assigned to the Seven Devils Group. New rock-stratigraphic units are the Windy Ridge Formation of probable Early Permian age, the Hunsaker Creek Formation...
Geology of the Ketchikan D-1 and Bradfield Canal A-1 quadrangles, southeastern Alaska
James G. Smith
1977, Bulletin 1425
The volumetric properties of aqueous sodium chloride solutions from O degrees to 500 degrees C at pressures up to 2000 bars based on a regression of available data in the literature
Robert W. Potter, David L. Brown
1977, Bulletin 1421-C
