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Page 4543, results 113551 - 113575

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Ground-water-quality-monitoring program in Iowa: Nitrate and pesticides in shallow aquifers
M.G. Detroy, P.K. Hunt, M.A. Holub
1989, Water-Resources Investigations Report 88-4123
Concern exists about the occurrence of agricultural chemicals, primarily nitrate and pesticides, in shallow ground water. In response to this concern, the focus of the Iowa ground-water-quality-monitoring program has shifted to emphasize nonpoint contaminants. The program, which began in 1982, is operated by the U.S. Geological Survey in cooperation with...
Water resources data, Washington, water year 1987
E.M. McGavock, W.D. Wiggins, P. R. Boucher, R.L. Blaz, L.L. Reed, M.L. Smith
1989, Water Data Report WA-87-1
The Water Resources Division of the U.S. Geological Survey, in cooperation with State, local, and other Federal agencies, obtains a large amount of data pertaining to the water resources of Washington each water year. These data, accumulated during many water years, constitute a valuable data base for developing an improved...
Reconnaissance hydrogeologic investigation of the Defense Waste Processing Facility and vicinity, Savannah River Plant, South Carolina
K.F. Dennehy, D.C. Prowell, P.B. McMahon
1989, Water-Resources Investigations Report 88-4221
The hydrogeologic framework of the area around the Savannah River Plant, South Carolina consists of 2 to 3 separate water bearing units. In the northern half of the study area, the Barnwell and underlying McBean aquifers are considered one aquifer owing to the absence of the tan clay-confining unit between...
Reconnaissance of water quality of Pueblo Reservoir, Colorado: May through December 1985
Patrick Edelmann
1989, Water-Resources Investigations Report 88-4118
Pueblo Reservoir is the farthest upstream, main-stream reservoir constructed on the Arkansas River and is located in Pueblo County approximately 6 miles upstream from the city of Pueblo, Colorado. During the 1985 sampling period, the reservoir was stratified, and underflow from the Arkansas River occurred that resulted in stratification with...
Physical and chemical properties of San Francisco Bay, California, 1980
Allan Y. Ota, L. E. Schemel, S.W. Hager
1989, Open-File Report 89-421
The U.S. Geological Survey conducted hydrologic investigations in both the deep water channels and the shallow-water regions of the San Francisco Bay estuarine system during 1980. Cruises were conducted regularly, usually at two-week intervals. Physical and chemical properties presented in this report include temperature , salinity, suspended particulate matter, turbidity,...