Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16740
Fish community and habitat data at selected sites in the White River Basin, Indiana, 1993-95 Fish community and habitat data at selected sites in the White River Basin, Indiana, 1993-95
No abstract available.
Authors
N.T. Baker, J.W. Frey
Assessment of streambed scour at bridges in Indiana Assessment of streambed scour at bridges in Indiana
No abstract available.
Authors
Gary Bennett
Evaluation of selected wells in Pennsylvania's observation-well program as of 1993 Evaluation of selected wells in Pennsylvania's observation-well program as of 1993
In 1993, the U.S. Geological Survey operated 62 observation wells in 60 of Pennsylvania's 67 counties in cooperation with the Pennsylvania Department of Environmental Resources. These wells attempt to monitor an aerial extent of 45,000 square miles and penetrate 39 geologic formations or water-bearing units of 14 physiographic provinces. Some wells were drilled specifically for the...
Authors
R.W. Conger
Hydrogeologic investigation of the Malvern TCE Superfund Site, Chester County, Pennsylvania Hydrogeologic investigation of the Malvern TCE Superfund Site, Chester County, Pennsylvania
The Malvern TCE Superfund Site, a former solvent recycling facility that now stores and sells solvents, consists of a plant and disposal area, which are approximately 1,900 ft (feet) apart. The site is underlain by an unconfined carbonate bedrock aquifer in which permeability has been enhanced in places by solution. Water levels respond quickly to precipitation and show a similar...
Authors
Ronald A. Sloto
Modeling waves and circulation in Lake Pontchartrain, Louisiana Modeling waves and circulation in Lake Pontchartrain, Louisiana
The U.S. Geological Survey is conducting a study of storm-driven sediment resuspension and transport in Lake Pontchartrain, Louisiana. Two critical processes related to sediment transport in the lake are (1) the resuspension of sediments due to wind-generated storm waves and (2) the movement of resuspended material by lake currents during storm wind events. The potential for sediment...
Authors
Richard P. Signell, Jeffrey H. List
Lateral trapping of sediment in partially mixed estuary Lateral trapping of sediment in partially mixed estuary
No abstract available.
Authors
W. R. Geyer, R. P. Signell, G. C. Kineke
Reply to comment by R. Anderson on "Uranium-series disequilibrium, sedimentation, diatom frustules, and paleoclimate change in Lake Baikal" Reply to comment by R. Anderson on "Uranium-series disequilibrium, sedimentation, diatom frustules, and paleoclimate change in Lake Baikal"
No abstract available.
Authors
D. N. Edgington, J. A. Robbins, S.M. Colman, K. A. Orlandini, M. P. Gustin, J. V. Klump, L. Z. Granina
Wolf pack size and food acquisition Wolf pack size and food acquisition
No abstract available.
Authors
Paul E. Schmidt, L. David Mech
Survival rates of American woodcock wintering in the Georgia Piedmont Survival rates of American woodcock wintering in the Georgia Piedmont
We estimated survival rates of wintering American woodcock (Scolopax minor). We found no age- or sex-specific differences in period survival rates. The survival rate for the period 25 December 1994-7 February 1995 for all age and sex classes combined (0.72) was not different from a similarly derived estimate for woodcock wintering along the Atlantic Coast. Survival rates of wintering...
Authors
David G. Krementz, James Berdeen
A survey for mallard pairs in the Atlantic flyway A survey for mallard pairs in the Atlantic flyway
During 1989-1992, spring surveys of randomly selected, 1-km2 plots, stratified by physiographic strata, were conducted in the Atlantic flyway from New Hampshire to Virginia, to estimate mallard (Anas platyrhynchos) pairs. All potential waterfowl habitat in each plot was checked by ground crews. The adjusted mean mallard pair estimate over the 4-year period was 300,849 (range 271,193-320...
Authors
H.W. Heusmann, John R. Sauer
Computer simulation of vasectomy for wolf control Computer simulation of vasectomy for wolf control
Recovering gray wolf (Canis lupus) populations in the Lake Superior region of the United States are prompting state management agencies to consider strategies to control population growth. In addition to wolf removal, vasectomy has been proposed. To predict the population effects of different sterilization and removal strategies, we developed a simulation model of wolf dynamics using...
Authors
R.G. Haight, L. David Mech
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Effects of nutrient management on quality of surface runoff and ground water at a small carbonate-rock site near Ephrata, Pennsylvania, 1984-90 Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Effects of nutrient management on quality of surface runoff and ground water at a small carbonate-rock site near Ephrata, Pennsylvania, 1984-90
The U.S. Geological Survey and the Pennsylvania Department of Environmental Protection conducted a study from 1984 to 1990 to determine theeffects of the implementation and practice of nutrient management [an agricultural best-management practice (BMP)] on the quality of surface runoff and ground water at a 55-acre crop and livestock farm in carbonate terrain nearEphrata, Pa...
Authors
D. W. Hall, P. L. Lietman, E. J. Koerkle