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Page 317, results 7901 - 7925

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Depth to water in the eastern Snake River Plain and surrounding tributary valleys, southwestern Idaho, calculated using water levels from 1980 to 1988
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...
Hydrogeology and simulation of ground-water flow in the Rochester area, southeastern Minnesota, 1987-88
G. N. Delin
1991, Water-Resources Investigations Report 90-4081
Ground-water flow in the St. Peter-Prairie du Chien-Jordan aquifer was studied in a 700 square-mile area surrounding Rochester, Minnesota. The aquifer consisting of sandstone, limestone, and dolomite is locally confined by the Decorah-Platteville-Glenwood sequence of shales and limestones. Regional flow in the aquifer is from a ground-water divide on the...
Selected water-quality characteristics in the upper Mississippi River basin, Royalton to Hastings, Minnesota
M.R. Have
1991, Water-Resources Investigations Report 88-4053
The upper Mississippi River basin from Royalton to Hastings, Minnesota, includes seven subbasins in east-central Minnesota that cover an area of 8,500 square miles. Results of a study, using data from the Minnesota Pollution Control Agency, Metropolitan Waste Control Commission, and the U.S. Geological Survey, indicate that selected water-quality characteristics...
Earth-fissure movements associated with fluctuations in ground-water levels near the Picacho Mountains, south-central Arizona, 1980-84
Michael C. Carpenter
1991, Open-File Report 90-561
The Picacho earth fissure transects subsiding alluvial sediments near the east periphery of the Picacho basin in south-central Arizona. The basin has undergone land subsidence of as much as 3.8 meters since the 1930's owing to compaction of the aquifer system in response to ground-water-level declines that have exceeded 100...
A pilot study for delineation of areas contributing water to wellfields at Jackson, Tennessee
R. E. Broshears, J. F. Connell, N. C. Short
1991, Water-Resources Investigations Report 89-4201
The U.S. Geological Survey, in cooperation with the Tennessee Department of Health and Environment, Division of Groundwater Protection, and the Jackson Utility Division, conducted a pilot study to determine data needs and the applicability of four methods for the delineation of wellhead protection areas. Jackson Utility Division in Jackson, Madison...
Hydrology of the Texas Gulf Coast aquifer systems
Paul D. Ryder, Ann F. Ardis
1991, Open-File Report 91-64
A complex, multilayered ground-water flow system exists in the Coastal Plain sediments of Texas. The Tertiary and Quaternary clastic deposits have an areal extent of 114,000 square miles onshore and in the Gulf of Mexico. Two distinct aquifer systems are recognized within the sediments, which range in thickness from a...
Chart showing correlations of upper Cretaceous Fox Hills Sandstone and Lance Formation, and lower Tertiary Fort Union, Wasatch, and Green River formations, from the eastern flank of the Washakie Basin to the southeastern part of the Great Divide Basin, Wyoming
R. D. Hettinger, J.G. Honey, D. J. Nichols
1991, IMAP 2151
The stratigraphic sections show surface and subsurface correlations of some Upper Cretaceous and lower Tertiary rocks along the eastern flank of the Washakie basin and southeastern part of the Great Divide basin, Wyoming. These rock crop out from near Baggs, Wyoming, to near Creston Junction, Wyoming, 50 mi (80km) to...
Simulation of effects of ground-water development on water-levels in glacial-drift aquifers in the Brooten-Belgrade area, west-central Minnesota
G. N. Delin
1991, Water-Resources Investigations Report 88-4193
Ground-water flow in the confined- and unconfined-drift aquifers in the Brooten-Belgrade area of west-central Minnesota was simulated with a three-dimensional finite-difference ground-water-flow model. Model results indicate that about 96 percent of the total inflow to the modeled area is from precipitation. Discounting evapotranspiration, 63 percent of the total outflow is...
Depth to water in the western Snake River Plain and surrounding tributary valleys, southwestern Idaho and eastern Oregon, calculated using water levels from 1980 to 1988
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...
Water quality of lakes and streams in Voyageurs National Park, northern Minnesota, 1977-84
G. A. Payne
1991, Water-Resources Investigations Report 88-4016
Water-quality investigations in six interconnected lakes that comprise most of the surface area of Voyageurs National Park in northern Minnesota revealed substantial differences in water-quality. Three large lakes; Sand Point, Namakan, and Rainy, near the eastern and northern boundaries of the Park; are oligotrophic to mesotrophic, having low dissolved solids...