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Publications

Publications from USGS science centers throughout the Southeast Region.

Filter Total Items: 10486

Toxicity of inorganic and organic selenium to Daphnia magna (cladocera) and Chironomus riparius (diptera) Toxicity of inorganic and organic selenium to Daphnia magna (cladocera) and Chironomus riparius (diptera)

Elevated concentrations of selenium (Se) have been previously measured in biota sampled from the Kesterson National Wildlife Refuge (KNWR) in the San Joaquin Valley of central California. We conducted acute and chronic toxicity tests with the cladoceran Daphnia magna and the midge Chironomus riparius to determine the toxicity or bioaccumulation of waterborne Se in a reconstituted water...
Authors
Christopher G. Ingersoll, F.J. Dwyer, T.W. May

Concentrations of boron, molybdenum, and selenium in chinook salmon Concentrations of boron, molybdenum, and selenium in chinook salmon

The concentrations of boron, molybdenum, and selenium in young chinook salmon Oncorhynchus tshawytscha were determined in three partial life cycle chronic toxicity studies. In each study, fish were exposed to a mixture of boron, molybdenum, selenate, and selenite in the proportions found in subsurface agricultural drainage water in the basin of the San Joaquin Valley, California. Tests...
Authors
Steven J. Hamilton, Raymond H. Wiedmeyer

Hydrologic effects of well-field operations in a wetland, Dade County, Florida Hydrologic effects of well-field operations in a wetland, Dade County, Florida

Water-level, canal stage and discharge, and rainfall data collected in a wetland in Dade County, Florida, were analyzed to determine the effects of pumping at the Northwest Well Field on water levels in the wetland. The Northwest Well Field is the first major well field in south Florida to be operated in a wetland, away from saltwater intrusion and the potential for contamination caused...
Authors
R.S. Sonenshein, Ronald H. Hofstetter

Geohydrology and water quality of the Roubidoux Aquifer, northeastern Oklahoma Geohydrology and water quality of the Roubidoux Aquifer, northeastern Oklahoma

The Roubidoux aquifer is an important source of freshwater for public supplies, commerce, industry, and rural water districts in northeastern Oklahoma. Ground-water withdrawals from the aquifer in 1981 were estimated to be 4.8 million gallons per day, of which about 90 percent was withdrawn in Ottawa County. Wells drilled at the beginning of the 20th century originally flowed at the land...
Authors
Scott C. Christenson, David L. Parkhurst, Roy W. Fairchild

Continuous seismic reflection profiling of hydrogeologic features beneath New River, Camp Lejeune, North Carolina Continuous seismic reflection profiling of hydrogeologic features beneath New River, Camp Lejeune, North Carolina

A medium-power, wide-frequency seismic system was used to collect more than 100 miles of continuous seismic reflection profiling data over a 4- day period along a 24-mile segment of the New River estuary and Intracoastal Waterway. The seismic reflection data were evaluated to determine the continuity of aquifer sediments and correlation with existing borehole geophysical well-log data at...
Authors
A.P. Cardinell, D.A. Harned, S. A. Berg
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