Publications
These publications showcase the significant science conducted in our Science Centers.
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Postimpoundment survey of water-quality characteristics of Raystown Lake, Huntingdon and Bedford Counties, Pennsylvania
Water-quality data, collected from May 1974 to September 1976 at thirteen sites within Raystown Lake and in the inflow and outflow channels, define the water-quality characteristics of the lake water and the effects of impoundment on the quality of the lake outflow. Depth-profile measurements show Raystown Lake to be dimictic. Thermal stratification is well developed during the summer. Generally h
Authors
Donald R. Williams
Sediment discharge from highway construction near Port Carbon, Pennsylvania
The effects of highway construction on suspended-sediment loads were studied in the upper reaches of the Schuylkill River basin, Schuylkill County, Pennsylvania, from April 1975 to March 1977. From March 1975 to October 1976, 4.3 miles of State Route 209 was relocated through the upper reaches of the basin, a mountainous watershed with a drainage area of 27.1 square miles.
About 16,000 tons of sus
Authors
Robert E. Helm
Bacteriological water quality of Tulpehocken Creek basin, Berks and Lebanon Counties, Pennsylvania
A four month intensive study of the bacteriological quality of water in the Tulpehocken Creek basin indicates that (1) the streams locally contain high densities of bacteria indicative of fecal contamination, (2) nonpoint waste sources, particularly livestock, are the dominant influence in the excessive bacteriological-indicator counts observed, and (3) retention time of water in the proposed Blue
Authors
James L. Barker
Regional analysis of the effects of land use on stream-water quality; methodology and application in the Susquehanna River Basin, Pennsylvania and New York
A framework is presented for compiling available data for assessing statistical relationships between water quality and climate, physiography and land use. Seventeen water-quality characteristics studied represent annual mean concentrations or calculated annual yields of suspended sediment, dissolved solids and various chemical species of nitrogen and phosphorus. Usable multiple-linear regressions
Authors
David J. Lystrom, F. A. Rinella, D. A. Rickert, Lisa Zimmermann
Hydrologic environment of the Silurian salt deposits in parts of Michigan, Ohio, and New York
The aggregate thickness of evaporites (salt, gypsum, and anhydrite) in the Silurian Salina sequence in Michigan exceeds 1200 feet in areas near the periphery of the Michigan basin, where the salt beds are less than 3000 feet below land surface. In northeast Ohio the aggregate thickness of salt beds is as much as 200 feet in places, and in western New York it is more than 500 feet, where th beds ar
Authors
Stanley E. Norris
Geologic disposal of high-level radioactive wastes; earth-science perspectives
No abstract available
Authors
J. D. Bredehoeft, A. W. England, D. B. Stewart, N.J. Trask, I.J. Winograd
Effectiveness of sediment-control techniques used during highway construction in central Pennsylvania
A different method for controlling erosion and sediment transport during highway construction was used in each of four adjacent drainage basins in central Pennsylvania. The basins ranged in size from 240 to 490 acres (97 to 198 hectares), and the area disturbed by highway construction in each basin ranged from 20 to 48 acres (8 to 19 hectares). Sediment discharge was measured from each basin for 3
Authors
Lloyd A. Reed
Mean annual runoff in the upper Ohio River basin, 1941-70, and its historical variation
A map of the Ohio River basin above the Muskingum River shows patterns of mean annual runoff for the new climatologic and hydrologic reference period, 1941-70, and provides an up-to-date, consistent basis for consideration of this streamflow characteristic. The primary data base consisted of 98 long-term gaging-station records collected within this 27,300-square-mile (70,700-square-kilometer) head
Authors
Robert M. Beall
Gas-liquid chromatographic determination of kepone in field-collected avian tissues and eggs
A procedure is described for determining Kepone (decachlorooctahydro-1,3,4-metheno-2H-cyclobuta [cd] pentalene-2-one) residues in avian egg, liver, and tissue. Samples were extracted with benzene-isopropanol, and the extract was cleaned up with fuming H2SO4-concentrated H2SO4. Kepone was separated from organochlorine pesticides and polychlorinated biphenyls on a Florisil column and analyzed by ele
Authors
C. J. Stafford, W. L. Reichel, D. M. Swineford, R. M. Prouty, M. L. Gay
Osprey distribution, abundance, and status in western North America: I. The northern California population
An estimated 355± 40 pairs (95 percent C.I.) of Ospreys (<i>Pandion haliaetus carolinensis</i>) nested in the northern California survey area in 1975. Eighty-one pairs were estimated along the extreme northern coast in Del Norte and Humboldt Counties. One hundred and forty-four pairs were estimated along California's northern coast in Mendociuo, Sonoma, and Marin Counties. The northern interior re
Authors
Charles J. Henny, David J. Dunaway, Robert D. Mallette, James R. Koplin
Studies on combined effects of organophosphates or carbamates and morsodren in birds. II. Plasma and cholinesterase in quail fed morsodren and orally dosed with parathion or carbofuran
The degree of interaction between mercury and cholinesterase inhibiting pesticides was determined by comparing enzyme responses to sublethal dosages of parathion or carbofuran in quail fed 0.05, 0.5, or 5.0 ppm morsodren for 18 weeks. A statistically significant interaction was defined as greater brain cholinesterase inhibition in morsodren-fed than in clean-fed birds following pesticide dosage. T
Authors
M. P. Dieter, J. L. Ludke
Uptake and retention of dietary cadmium in mallard ducks
Adult mallard ducks fed 0, 2, 20, or 200 ppm of cadmium chloride in the diet were sacrificed at 30-day intervals and tissues were analyzed for cadmium. No birds died during the study and body weights did not change. The liver and kidney accumulated the highest levels of cadmium. Tissue residues were significantly correlated in all treatment groups and residues increased with treatment level. Hemat
Authors
D. H. White, M. T. Finley