Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10387
Techniques for estimating 7-day, 10-year low-flow characteristics for ungaged sites on streams in Mississippi Techniques for estimating 7-day, 10-year low-flow characteristics for ungaged sites on streams in Mississippi
Mississippi State water laws require that the 7-day, 10-year low-flow characteristic (7Q10) of streams be used as a criterion for issuing wastedischarge permits to dischargers to streams and for limiting withdrawals of water from streams. This report presents techniques for estimating the 7Q10 for ungaged sites on streams in Mississippi based on the availability of baseflow discharge...
Authors
Pamela A. Telis
Effects of dried wastewater-treatment sludge application on ground-water quality in South Dade County, Florida Effects of dried wastewater-treatment sludge application on ground-water quality in South Dade County, Florida
Four test fields in the south Dade agricultural area were studied to determine the effects of sludge application on ground-water quality. Two fields had been cultivated for 10 years or more, and two had not been farmed for at least 10 years. The fields were representative of the area's two soil types (Rockdale and Perrine marl) and two major crop types (row crops and groves). Before the
Authors
Barbara Howie
Determination of flood hydrographs for streams in South Carolina: Volume 2. Estimation of peak-discharge frequency, runoff volumes, and flood hydrographs for urban watersheds Determination of flood hydrographs for streams in South Carolina: Volume 2. Estimation of peak-discharge frequency, runoff volumes, and flood hydrographs for urban watersheds
No abstract available.
Authors
L. R. Bohman
Water resources activities of the North Carolina District of the U.S. Geological Survey, 1988-90 Water resources activities of the North Carolina District of the U.S. Geological Survey, 1988-90
No abstract available.
Authors
Rebecca J. Deckard
Aquatic hazard assessment of the organophosphate insecticide fonofos Aquatic hazard assessment of the organophosphate insecticide fonofos
This study determined the acute and chronic toxicity of the organophosphate insecticide fonofos to standard freshwater aquatic organisms under laboratory conditions. Fonofos was acutely toxic to bluegill (Lepomis macrochirus), Daphnia (D. magna), and midge (Chironomous riparius) at 5.3, 2.7, and 39 μg/L, respectively. Three fonofos formulations (technical, 94.8% A.I.; 20G, field granular...
Authors
James F. Fairchild, Edward E. Little, James N. Huckins
A reconnaissance study of herbicides and their metabolites in surface water of the midwestern united states using immunoassay and gas chromatography/mass spectrometry A reconnaissance study of herbicides and their metabolites in surface water of the midwestern united states using immunoassay and gas chromatography/mass spectrometry
Preemergent herbicides and their metabolites, particularly atrazine, deethylatrazine, and metolachlor, persisted from 1989 to 1990 in the majority of rivers and streams in the midwestern United States. In spring, after the application of herbicides, the concentrations of atrazine, alachlor, and simazine were frequently 3-10 times greater than the U.S. Environmental Protection Agency...
Authors
E. Michael Thurman, D. A. Goolsby, M. T. Meyer, M. S. Mills, M.L. Pomes, Dana W. Kolpin
Leporacanthicus triactis, a new loricariid fish from upper Orinoco River tributaries in Venezuela and Colombia (Pisces, Siluriformes, Loricariidae) Leporacanthicus triactis, a new loricariid fish from upper Orinoco River tributaries in Venezuela and Colombia (Pisces, Siluriformes, Loricariidae)
Abstract not supplied at this time
Authors
I.J. Isbrucker, H. Nijssen, L.G. Nico
Rivulus tecminae, a new killifish from Amazonas Territory, Venezuela (Rivulidae, Cyprinodontiformes) Rivulus tecminae, a new killifish from Amazonas Territory, Venezuela (Rivulidae, Cyprinodontiformes)
Abstract not supplied at this time
Authors
J.E. Thomerson, L.G. Nico, D.C. Taphorn
Investigations into the effects of PCB congeners on reproduction in lake trout from the Great Lakes Investigations into the effects of PCB congeners on reproduction in lake trout from the Great Lakes
Eggs of feral lake trout collected in Lake Michigan were reared under laboratory conditions and monitored for egg hatchability, physical abnormalities, and survival of fry. Subsamples of eggs were also analyzed for PCB congeners. A negative correlation was found between egg hatchability and total PCBs but expressing PCB dose as dioxin equivalents did not produce as strong a correlation...
Authors
Michael J. Mac, T.R. Schwartz
Knowledge-based GIS: An expert system approach for managing wetlands Knowledge-based GIS: An expert system approach for managing wetlands
No abstract available
Authors
Wei Ji, James B. Johnston, Marcia McNiff, Loyd C. Mitchell
Toxicity of agricultural subsurface drainwater from the San Joaquin Valley, California to juvenile chinook salmon and striped bass Toxicity of agricultural subsurface drainwater from the San Joaquin Valley, California to juvenile chinook salmon and striped bass
Juvenile chinook salmon Oncorhynchus tshawytscha (40-50 mm total length, TL) and striped bass Morone saxatilis (30-40 mm TL) were exposed to serial dilutions (100, 50, 25, and 12.5%) of agricultural subsurface drainwater (WWD), reconstituted drainwater (RWWD), and reconstituted seawater (IO). Agricultural subsurface drainwater contained naturally elevated concentrations of major ions...
Authors
Michael K. Saiki, Mark R. Jennings, Raymond H. Wiedmeyer
Approximate changes in water levels in wells completed in the Chicot and Evangeline aquifers, 1977-92 and 1991-92, and measured compaction, 1973-91, in the Houston-Galveston region, Texas Approximate changes in water levels in wells completed in the Chicot and Evangeline aquifers, 1977-92 and 1991-92, and measured compaction, 1973-91, in the Houston-Galveston region, Texas
This report is one in a series of reports that depict water-level changes since 1977 and compaction of subsurface material since 1973. The report was prepared in cooperation with the Harris-Galveston Coastal Subsidence District and the City of Houston, and presents maps showing the approximate changes in water-levels in wells completed in the Chicot and Evangeline aquifers, 1977-92 and...
Authors
Mark C. Kasmarek, Dana L. Barbie, Al Campodonico