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Page 3954, results 98826 - 98850

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Aquifer descriptions from the U.S. Geological Survey Regional Aquifer-System Analysis Program, 1978-1993
Claire B. Davidson, Helen Doherty
1994, Open-File Report 94-465
The Regional Aquifer-System Analysis Program of the U.S. Geological Survey began in 1978. The overall purpose of this program is to define the geologic, hydrologic, and geochemical framework of the Nation's most important aquifers and aquifer systems. This report summarizes the aquifer or aquifer system name, geographic area, rock units,...
Investigation of bridge scour at selected sites on Missouri streams
Lawrence D. Becker
1994, Water-Resources Investigations Report 94-4200
Scour around bridge piers is a major concern in the design of a new bridge or the evaluation of the structural stability of an existing bridge. An adequate estimation of potential scour at bridge piers is essential to effective design, construction, and maintenance of hydraulic structures. Reasonably accurate estimates of...
Physical, chemical, and biological characteristics of Pueblo Reservoir, Colorado, 1985-89
Michael E. Lewis, Patrick Edelmann
1994, Water-Resources Investigations Report 94-4097
Physical, chemical, and biological characteristics of Pueblo Reservoir are described on the basis of data collected from spring 1985 through fall 1989. Also included are discussions of water quality of the upper Arkansas River Basin and the reservoir as they relate to reservoir operations. Pueblo Reservoir is a multipurpose, main-stem...
Hydrogeology and ground-water quality of northern Bucks County, Pennsylvania
Ronald A. Sloto, Curtis L. Schreffler
1994, Water-Resources Investigations Report 94-4109
The 187-square mile study area is in the Triassic-Jurassic Newark Basin. Most of the area is underlain by sedimentary rocks of Upper Triassic age (74 percent) and intrusive diabase of Jurassic age (12 percent) and includes two southwest-northeast trending valleys underlain by carbonate and crystalline rock. Ground water in the sedimentary...
Bathymetric map of Coeur D'Alene Lake, Idaho
P. F. Woods, Charles E. Berenbrock
1994, Water-Resources Investigations Report 94-4119
The U.S. Geological Survey investigated nutrient and trace-element enrichment in Coeur d'Alene Lake, northern Idaho, during 1991-92.  The objectives of the investigation were to characterize limnology, quantify hydrologic and nutrient budgets, and develop a nutrient-load/lake-response model.  The model required bathymetric data to compute mass balances of water and nutrients within...