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Publications

Publications from USGS science centers throughout the Southeast Region.

Filter Total Items: 10420

Organochlorine chemical residues in bluegills and common carp from the irrigated San Joaquin Valley floor, California Organochlorine chemical residues in bluegills and common carp from the irrigated San Joaquin Valley floor, California

Samples of bluegills (Lepomis macrochirus) and common carp (Cyprinus carpio) collected from the San Joaquin River and two tributaries (Merced River and Salt Slough) in California were analyzed for 21 organochlorine chemical residues by gas chromatography to determine if pesticide contamination was confined to downstream sites exposed to irrigated agriculture, or if nonirrigated upstream...
Authors
Michael K. Saiki, Christopher J. Schmitt

Use of borehole neutron logs to estimate moisture content in the unsaturated zone of an alluvial aquifer Use of borehole neutron logs to estimate moisture content in the unsaturated zone of an alluvial aquifer

he neutron borehole logging tool was calibrated for the determination of moisture content in theunsaturated zone of an alluvial aquifer. A continuous core sample was collected to a depth of 15 ft from the unsaturated zone.Moisture content and other soil properties were determined by standard soil-laboratory techniques. The neutron logs profile was correlated to moisture content. The...
Authors
Vicente Quinones-Aponte, Ramon A. Carrasquillo

Estimating ground-water influx to a portion of the Rio Grande de Manati River basin in Puerto Rico through the measurement of 222Rn Estimating ground-water influx to a portion of the Rio Grande de Manati River basin in Puerto Rico through the measurement of 222Rn

Water has become a critical commodity in the Caribbean Region. In spite of a relative abundance of rainfall even on the smaller islands, the region is faced with severe seasonal shortages as well as increasing water quality problems. The supply of thewater needs in the area will become even more critical as economic development accelerates and the population continues to increase. The...
Authors
K. Kelly Ellins, Angel Roman-Mas, Roger W. Lee

Water-quality data for the ground-water network in eastern Broward County, Florida, 1983-84 Water-quality data for the ground-water network in eastern Broward County, Florida, 1983-84

During 1983-84, ground water from 63 wells located at 31 sites throughout, eastern Broward County, Florida, was sampled and analyzed to determine baseline water-quality conditions. The physical and chemical parameters analyzed included field measurements (pH and temperature), physical characteristics (color, turbidity, and specific conductance), major inorganic ions, nutrients (nitrogen
Authors
Bradley G. Waller, Frank L. Cannon
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