L. E. Cary
1991, Water-Resources Investigations Report 91-4068
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Publication Extents
Not all publications have extents, not all extents are completely accurateG. L. Giese, J. L. Eimers, R. W. Coble
1991, Open-File Report 90-372
A 3-D finite difference digital model was used to simulate groundwater flow in the 25,000 sq mi aquifer system of the North Carolina Coastal Plain. The model was developed from a geohydrologic framework that is based on an alternating sequence of 10 aquifers and 9 confining units, which comprise a...
James Gregory Moore
1991, Bulletin 1986
The Marion Peak 15-minute quadrangle includes about 620 km2 on the west slope of the Sierra Nevada in Fresno County, California, between 36°45' and 37°00' N. latitude and 118°30' and 118°45 W. longitude. This report supplements the geologic map of the Marion Peak quadrangle by providing modal and chemical analyses...
Niel Plummer, E.C. Prestemon, D.L. Parkhurst
1991, Water-Resources Investigations Report 91-4078
No abstract available....
William Downing Watson, A.L. Medlin, K.K. Krohn, D.S. Brookshire, R. L. Bernknopf
1991, Circular 1042
Current regulations on land use in the Western United States affect access to surface minable coal resources. This U.S. Geological Survey study analyzes the long-term effects of Federal land-use restrictions on the national cost of meeting future coal demands. The analysis covers 45 years. The U.S. Bureau of Land Management...
D. M. Sumner, W.M. Schuh, R.L. Cline
1991, Water-Resources Investigations Report 91-4127
Ponded depth in an artificial-recharge basin was used as a management option to conduct turbid water from the James River to the Oakes aquifer. Infiltration-rate response to changes in ponded depth was evaluated for a 15xl5-meter artificial-recharge test basin constructed in a medium-sandy soil in the irrigation area near Oakes,...
G. N. Delin, James Edward Almendinger
1991, Open-File Report 90-397
Accurate delineation of recharge areas for wells is an important requisite to protecting ground-water quality. Zones of transport and zones of contribution are two types of recharge areas that can be delineated. Analytical-calculation, numerical-modeling, and hydrogeologic-mapping methods were used to delineate recharge areas for two high-capacity (greater than about 200...
L.O. McLanahan
1991, Open-File Report 91-214
The U.S. Geological Survey (USGS) was established by an act of Congress on March 3, 1879, to provide a permanent Federal agency to conduct the systematic and scientific 'classification of the public lands, and examination of the geological structure, mineral resources, and products of national domain'. Since 1879, the research...
Carl W. Stover, B.G. Reagor, S. T. Algermissen
1991, Miscellaneous Field Studies Map 1857
This map is one of a series of seismicity maps produced by the U.S. Geological Survey that show earthquake data of individual states or groups of states at the scale of 1:1,000,000. This map shows only those earthquakes with epicenters located within the boundaries of Idaho, even though earthquakes in...
S. A. Leake, David E. Prudic
1991, Techniques of Water-Resources Investigations 06-A2
Removal of ground water by pumping from aquifers may result in compaction of compressible fine-grained beds that are within or adjacent to the aquifers. Compaction of the sediments and resulting land subsidence may be permanent if the head declines result in vertical stresses beyond the previous maximum stress. The process...
R. S. Guenthner
1991, Water-Resources Investigations Report 91-4086
Future development of the Garrison Diversion Unit may divert water from the Missouri River into the Sheyenne River and the Red River of the North for municipal and industrial use. The U.S. Bureau of Reclamation's Canals, Rivers, and Reservoirs Salinity Accounting Procedures model can be used to predict the effect...
Douglas G. Emerson
1991, Open-File Report 91-462
A model that simulates heat and water transfer in soils during freezing and thawing periods was developed and incorporated into the U.S. Geological Survey's Precipitation-Runoff Modeling System. The transfer of heat 1s based on an equation developed from Fourier's equation for heat flux. Field capacity and infiltration rate can vary...
Lawrence M. Baker
1991, Open-File Report 91-379
D. Y. Tai, M.E. Jennings, K. D. White, L.A. Garcia
1991, Open-File Report 91-469
Tau Rho Alpha
1991, Open-File Report 91-131-B
James D. Bliss
G. J. Orris, editor(s)
1991, Open-File Report 91-11-A
Frederick N. Robertson
1991, Professional Paper 1406-C
Chemical and isotope analyses of ground water from 28 basins in the Basin and Range physiographic province of Arizona and parts of adjacent States were used to evaluate ground-water quality, determine processes that control ground-water chemistry, provide independent insight into the hydrologic flow system, and develop information transfer. The area...
Molly A. Maupin
1991, Water-Resources Investigations Report 90-4193
The vulnerability of ground water to contamination in Idaho is being assessed by the IDHW/DEQ (Idaho Department of Health and Welfare, Division of Environmental Quality), using a modified version of the Environmental Orotection Agency DRASTIC methods (Allers and others, 1985). The project was designed as a technique to: (1) Assign...
D. H. Schaefer
1991, Open-File Report 91-479
Leon Ru-Liang Wang, Joyce C. Wang, Isao Ishibashi
1991, Open-File Report 91-441-F
Molly A. Maupin
1991, Water-Resources Investigations Report 91-4020
The vulnerability of ground water to contamination in Idaho is being assessed by the ISHW/DEQ (Idaho Department of Health and Welfare, Division of Environmental Quality), using a modified version of the Environmental Protection Agency DRASTIC methods (Allers and others, 1985). The project was designed as a technique to: (1) Assign...
E. C. Morris, Harold Masursky, D.J. Applebee, M.E. Strobell
1991, IMAP 2001
This map is one in a series of 1:500,000-scale geologic maps initiated by the National Aeronautics and Space Administration to...
Tau Rho Alpha, Leslie C. Gordon
1991, Open-File Report 91-115-A
Thomas J. Mack
1991, Open-File Report 90-371
Kenneth J. Hollett, Wesley R. Danskin, William F. McCaffrey, Caryl L. Walti
1991, Water Supply Paper 2370-B
Owens Valley, a long, narrow valley located along the east flank of the Sierra Nevada in east-central California, is the main source of water for the city of Los Angeles. The city diverts most of the surface water in the valley into the Owens River-Los Angeles Aqueduct system, which transports...