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Page 1975, results 49351 - 49375

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Water level and saturated thickness maps of the alluvial aquifer in eastern Arkansas, 1984
Maria Plafcan, Joe Edds
1986, Water-Resources Investigations Report 86-4014
The Mississippi River Valley alluvial aquifer, is a major source of water for most of eastern Arkansas. Agriculture is largely dependent on the aquifer as approximately 3.3 billion gallon per day are withdrawn for that purpose. Much smaller withdrawals also occur for industrial, public supply, and domestic use. The purpose...
Hydrogeologic and water-quality characteristics of crystalline-rock aquifers of Archean and Proterozoic age, Minnesota
H. W. Anderson Jr.
1986, Water-Resources Investigations Report 86-4033
Five aquifers in crystalline rocks of Archean and Proterozoic age in Minnesota include in descending order the North Shore Volcanic, Sioux Quartzite, Proterozoic metasedimentary, Biwabik Iron formation and undifferentiated Precambrian aquifers. The North Shore Volcanic aquifer generally yields < 15 gal/min to wells from interflow sediments and fractures in the...
Ground-water availability in the Black River Basin, New York
Roger Milton Waller
1986, Water-Resources Investigations Report 86-4040
There are three maps in this set, which were prepared in 1966-68 as part of a study on the water resources of the Black River basin in cooperation with the New York State Department of Environmental Conservation. The data presented on the maps show well locations, well yield from bedrock...
Ground-water availability in the eastern part of the Lake Ontario Basin, New York
Todd S. Miller
1986, Water-Resources Investigations Report 86-4201
A set of three maps show surficial geology, significant unconsolidated aquifers and well yield, and selected well locations for the Lake Ontario basin, New York. In the low areas , glaciers and wave action of former high-level lakes deposited permeable sand and gravel to form aquifers that yield more than...
Surficial geology and ground-water availability in the Allegheny River basin and part of the Lake Erie basin, New York
Michael H. Frimpter
1986, Water-Resources Investigations Report 86-4041
New York State 's need to develop a groundwater management program for protection of its aquifers led in 1985 to a cooperative program between the U.S. Geological Survey and the New York State Department of Environmental Conservation (through regional planning agencies) to publish data from previous studies. The two maps...
Potentiometric surface of the Floridan aquifer system in the Northwest Florida Water Management District, May 1985
Jack C. Rosenau, Paul E. Meadows
1986, Water-Resources Investigations Report 86-4183
The potentiometric surface map of the Floridan aquifer system in the northwest Florida Water Management District depicts the level to which water rose in tightly cased wells that tap the Floridan aquifer system in May 1985. The surface was mapped by determining the altitude of water levels in a network...
Bedrock topography of northwest Iowa
R.E. Hansen, D. L. Runkle
1986, IMAP 1726
Bedrock in Iowa (Hershey, 1969) generally is overlain by deposits of glacial drive and alluvium. The drift, consisting of glacial till and glacial outwash, ranges in thickness from zero to more than 500 feet in western Iowa; the alluvium in stream valleys ranges in thickness from less than 1 foot...
Bedrock topography of west-central Iowa
R.E. Hansen, D. L. Runkle
1986, IMAP 1688
Bedrock in Iowa (Hershey 1969) generally is overlain by deposits of glacial drift and alluvium. The drift, consisting of glacial till and glacial outwash, ranges in thickness from zero to more than 500 feet in western Iowa; the alluvium in stream valleys ranges in thickness from less than 1 to...