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Page 3878, results 96926 - 96950

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Not all publications have extents, not all extents are completely accurate
Hydrogeologic data for the northern Rocky Mountains intermontane basins, Montana
DeAnn M. Dutton, Sean M. Lawlor, D.W. Briar, R.E. Tresch
1995, Open-File Report 95-143
The U.S. Geological Survey began a Regional Aquifer- System Analysis of the Northern Rocky Mountains Intermontane Basins of western Montana and central and central and northern Idaho in 1990 to establish a regional framework of information for aquifers in 54 intermontane basins in an area of about 77,500 square miles....
Paleogeography and the Late Cretaceous of the Western Interior of middle North America; coal distribution and sediment accumulation
Laura N. Robinson Roberts, Mark A. Kirschbaum
1995, Professional Paper 1561
A synthesis of Late Cretaceous paleogeography of the Western Interior from Mexico to southwestern Canada emphasizes the areal distribution of peat-forming environments during six biostratigraphically constrained time intervals. Isopach maps of strata for each interval reveal the locations and magnitude of major depocenters. The paleogeographic framework provides insight into the...
Effects of two contrasting agricultural land uses on shallow groundwater quality in the San Joaquin Valley, California; design and preliminary interpretation
N. M. Dubrovsky, Karen R. Burow, Jo Ann M. Gronberg
1995, Open-File Report 95-286
From 1992 through 1994, the San Joaquin-Tulare Basins Study team of the USGS National Water Quality Assessment program investigated the occurrence and distribution of water quality constituents in shallow groundwater underlying two areas of different agricultural land uses: almond orchards and vineyards. The study was restricted to the alluvial fans...
Bibliography of U.S. Geological Survey reports on the water resources of Florida, 1886-1995
Carmen A. Garcia, N.D. Hoy
1995, Open-File Report 95-185
The U.S. Geological Survey has released a listing of its reports on water resources in Florida for the period 1886-1995. Most of the reports contained in the listing were prepared by the U.S. Geological Survey in cooperation with numerous public agencies in Florida. The compilation has a full bibliographic list...
A feasibility study to estimate minimum surface-casing depths of oil and gas wells to prevent ground-water contamination in four areas of western Pennsylvania
T. F. Buckwalter, P. J. Squillace
1995, Water-Resources Investigations Report 87-4136
Hydrologic data were evaluated from four areas of western Pennsylvania to estimate the minimum depth of well surface casing needed to prevent contamination of most of the fresh gr6unct-water resources by oil and gas wells. The areas are representative of the different types of oil and gas activities and of...
Using chloride and chlorine-36 as soil-water tracers to estimate deep percolation at selected locations on the U.S. Department of Energy Hanford site, Washington
Edmund A. Prych
1995, Open-File Report 94-514
Long-term average deep-percolation rates of water from precipitation on the U.S. Department of Energy Hanford Site in semiarid south-central Washington, as estimated by a chloride mass-balance method, range from 0.008 to 0.30 mm/yr (millimeters per year) at nine locations covered by a variety of fine-grain soils and vegetated with sagebrush...
Geometry of sorbed arsenate on ferrihydrite and crystalline FeOOH: Re-evaluation of EXAFS results and topological factors in predicting sorbate geometry, and evidence for monodentate complexes
Glenn A. Waychunas, James A. Davis, Christopher C. Fuller
1995, Geochimica et Cosmochimica Acta (59) 3655-3661
Manceau's (1995) reinterpretation of some of our EXAFS results (Waychunas et al., 1993) has been analyzed using both old and newly collected data in an attempt to clarify the nature of proposed monodentate and edge-sharing bidentate arsenate complexes on the ferrihydrite surface. It is shown that EXAFS analysis utilizing data...
A selected bibliography of water-related research in the upper Klamath Basin, Oregon
Dorie L. Brownell, Mia R. Rinallo
1995, Open-File Report 95-285
A bibliography containing 165 selected references was compiled to assist local, State, and Federal agencies that have ongoing water-related research interests in the Upper Klamath Basin. The report has two parts. Part 1 is a list of bibliographic citations alphabetized by author, and Part 2 is a subject index that...
Ground-water use by public-supply systems in Tennessee, 1990
S. S. Hutson
1995, Open-File Report 94-483
Ground-water use by public water-supply systems during 1990 was inventoried in Tennessee. Ground- water withdrawals were estimated to average 269 million gallons per day (Mgal/d), or 38 percent of the total public-supply water use. This volume represents an increase of 34 percent in the use of ground water for public...
Hydrogeology and simulation of ground-water flow in the Eutaw-McShan aquifer and in the Tuscaloosa aquifer system in northeastern Mississippi
E. W. Strom, M. J. Mallory
1995, Water-Resources Investigations Report 94-4223
The Eutaw-McShan aquifer and Tuscaloosa aquifer system in northeastern Mississippi were investi- gated to better understand the hydrogeology and the ground-water flow in and between the aquifers. A numerical model was developed to simulate ground- water flow for prepumping and pumping conditions, and model simulatons projected the possible effects of...
Reconnaissance of ground-water quality in the North Platte Natural Resources District, western Nebraska, June-July 1991
Ingrid M. Verstraeten, S. S. Sibray, J. C. Cannia, D. Q. Tanner
1995, Water-Resources Investigations Report 94-4057
One-hundred twenty wells completed in unconfined Quaternary alluvial, Ogallala, Arikaree, Brule fractured, sand and confined Chadron and undifferentiated Cretaceous water-bearing units were sampled in June and July 1991 to characterize the quality of ground water in the study area. More than 75 percent of the water samples had nitrate and...
Channel change on the Santa Cruz River, Pima County, Arizona, 1936-86
John T. Parker
1995, Water Supply Paper 2429
The Santa Cruz River in southeastern Arizona has a long history of channel instability. Since the late 19th century, lateral channel erosion has caused extensive property damage, particularly in Pima County. The dominant mechanism of channel change in a reach depends on channel morphology and flood magnitude. The timing and...
Application of surface geophysical techniques in a study of the geomorphology of the lower Copper River, Alaska
T. P. Brabets
1995, Water-Resources Investigations Report 94-4165
As part of a geomorphology study of the lower Copper River, three surface geophysical techniques were tested for their ability to detect infilled scour holes at bridge piers, old river channels, and subbottom deposits in a glacier-formed lake. The methods were (1) ground-penetrating radar, (2) continuous seismic reflection using a...