Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9967
Insecticides: effects on cutthroat trout of repeated exposure to DDT
Cutthroat trout were periodically exposed to p, pp-DDT, in acetone solution or in the food. Excessive mortality occurred only in lots treated with high concentrations of DDT, probably as a result of decreased resistance to nonspecific stressors. Surviving fish in these lots were significantly larger than those in the control lot, or in the lots treated with low concentrations of DDT. The number an
Authors
Don Allison, Burton J. Kallman, Oliver B. Cope, Charles C. Van Valin
Reductive dechlorination of DDT to DDD by yeast
Labeled DDD [ 1,1-dichlor-o-2,2-bis(p-chlorophenyl)-ethane] was formed from C14-labeled DDT in the presence of yeast. The formation of DDD from DDE [1,1-dichloro-2,2-bis (p-chlorophenyl)-ethylene] was not observed, indicating that a reductive dechlorination of DDT occurs.
Authors
Burton J. Kallman, Austin K. Andrews
Salt-water encroachment, geology, and ground-water resources of Savannah area, Georgia and South Carolina
The Savannah area consists of about 2,300 square miles of the Coastal Plain along the coast of eastern Georgia and southeastern South Carolina. Savannah is near the center of the area. Most of the large ground-water developments are in or near Savannah. About 98 percent of the approximately 60 mgd of ground water used is pumped from the principal artesian aquifer, which is composed of about 600 fe
Authors
H. B. Counts, Ellis Donsky
Quality of water from test wells in the Castolon area, Big Bend National Park, Brewster County, Texas
No abstract available.
Authors
Jack Rawson
Effects of drought in central and south Texas
The effects of drought upon ground-water storage and discharge, and upon streamflow, vary tremendously in the central third of Texas (the area from the Panhandle to the Gulf of Mexico). Extremes are represented by (a) the Llano Estacado, where the drought had negligible effect upon ground-water resources, which are being progressively depleted by pumping for irrigation; and (b) the Balcones fault-
Authors
H. E. Thomas
Floods on White Rock Creek above White Rock Lake at Dallas, Texas
The White Rock Creek watershed within the city limits of Dallas , Texas, presents problems not unique in the rapid residential and industrial development encountered by many cities throughout the United States. The advantages of full development of the existing area within a city before expanding city boundaries, are related to both economics and civic pride. The expansion of city boundaries usual
Authors
Clarence R. Gilbert
Floods of April-June 1957 in Texas and adjacent states
No abstract available.
Authors
Ivan Dale Yost
Geology and ground-water resources of Dougherty County, Georgia
No abstract available.
Authors
Robert L. Wait
Ground water geology of Edwards County, Texas
Edwards County occupies 2,075 square miles of the southern part of the Edwards Plateau in southwest Texas. In 1950 it had a population of 2,908. Its thin limestone soil supports the characteristic flora of a semiarid region. The county is underlain by nearly flat-lying beds of limestone and a few beds of shale and marl.
The Glen Rose limestone of Cretaceous age, the oldest formation tapped by wate
Authors
Archie T. Long