Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16785
Influence of size-fractioning techniques on concentrations of selected trace metals in bottom materials from two streams in northeastern Ohio
Identical stream-bottom material samples, when fractioned to the same size by different techniques, may contain significantly different trace-metal concentrations. Precision of techniques also may differ, which could affect the ability to discriminate between size-fractioned bottom-material samples having different metal concentrations. Bottom-material samples fractioned to less than 0.020 millime
Authors
G. F. Koltun, Dennis R. Helsel
Hydrography of the Lydonia Canyon: Data report for R/V Oceanus Cruise 95, April-May 1981
No abstract available.
Authors
J. A. Moody, Bradford Butman, S. J. Conley
Hydrography of Lydonia Canyon: Data report for R/V Oceanus Cruise 104, September 25-October 2, 1981
No abstract available.
Authors
Bradford Butman, J. A. Moody, S. J. Conley
Results of a preimpoundment water-quality study of Swatara Creek, Pennsylvania
The water quality of Swatara Creek prior to impoundment by the proposed Swatara Creek Reservoir in south-central Pennsylvania was studied from July 1981 through October 1982. The report, done in cooperation with the Pennsylvania Department of Environmental Resources (PaDER), Bureau of State Parks, presents information on existing water-quality conditions. A discussion of possible water-quality con
Authors
David K. Fishel, J.E. Richardson
Occurrence of nitrate and herbicides in ground water in the upper Conestoga River basin, Pennsylvania : water-quality study of the Conestoga River headwaters, Pennsylvania
Nitrate-nitrogen and herbicide ground-water data is being collected by the u.s. Geological Survey as part of the nationwide Rural Clean Water Program designed to determine the effects of agricultural-management practices on water quality. Data collected from September 1982 to October 1983 · in the 188-square mile intensively farmed upper Conestoga River basin indicates high nitrate and detectable
Authors
David K. Fishel, Patricia L. Lietman
Shallow ground-water flow, water levels, and quality of water, 1980-84, Cowles Unit, Indiana Dunes National Lakeshore
The Cowles Unit of Indiana Dunes National Lakeshore in Porter County, northwest Indiana, contains a broad dune-beach complex along the southern shoreline of Lake Michigan and a large wetland, called the Great Marsh, that occupies the lowland between the shoreline dunes and an older dune-beach complex farther inland. These lacustrine sediments form a surficial aquifer that extends from the Lake Mic
Authors
D.A. Cohen, R. J. Shedlock
Theoretical technique for predicting the cumulative impact of iron and manganese oxidation in streams receiving discharge from coal mines
Two U.S. Geological Survey computer programs are modified and linked to predict the cumulative impact of iron and manganese oxidation in coal-mine discharge water on the dissolved chemical quality of a receiving stream. The coupled programs calculate the changes in dissolved iron, dissolved manganese, and dissolved oxygen concentrations; alkalinity; and, pH of surface water downstream from the poi
Authors
Keith E. Bobay
Temporal changes in sulfate, chloride, and sodium concentrations in four eastern Pennsylvania streams
Trend analyses of 20 years or more of chemical quality and streamflow data for four streams in eastern Pennsylvania indicate that sulfate has decreased significantly in three of the four basins studied, while sodium and chloride have generally increased. The majority of chemical quality changes occurred in the late 1950 's and early 1960 's coincident with significant cultural changes. It is belie
Authors
J. L. Barker
Review of the hydrologic data-collection network in the St. Joseph River basin, Indiana
The St. Joseph River Basin data-collection network in the St. Joseph River for streamflow, lake, ground water, and climatic stations was reviewed. The network review included only the 1700 sq mi part of the basin in Indiana. The streamflow network includes 11 continuous-record gaging stations and one partial-record station. Based on areal distribution, lake effect , contributing drainage area, and
Authors
E. J. Crompton, J. G. Peters, R. L. Miller, J. A. Stewart, K. J. Banaszak, R. J. Shedlock
Description of sediment data collected by the U.S. Geological Survey in small watersheds in coal-mining areas of the eastern United States, 1980-84
Hydrologic data were collected by the U.S. Geological Survey from 20 small watersheds in the surface-mining areas of the eastern United States from 1980 through 1984 as part of the Survey1 s coal-hydrology program. Each data set includes sediment-concentration, streamflow, and precipitation data collected at 5- or 15-minute intervals. One reason for collecting the data was to test the sediment com
Authors
L. D. Arihood
Statistical analyses of flood frequency, low-flow frequency, and flow duration of streams in the Philadelphia Area, Pennsylvania
Flood frequency, low-flow frequency, and flow-duration characteristics were computed for 26 stream-gaging stations in and near Philadelphia. Data were obtained from 21 continuous-recording stations and five stations that were initially continuous-recording stations, but which were subsequently converted to crest-stage stations. The annual peak flows were fitted to the three-parameter log-Pearson T
Authors
Andrew Voytik
Temperature of ground water at Philadelphia, Pennsylvania, 1979- 1981
Anthropogenic heat production has undoubtedly caused increased ground-water temperatures in many parts of Philadelphia, Pennsylvania, as shown by temperatures of 98 samples and logs of 40 wells measured during 1979-81. Most sample temperatures were higher than 12.6 degrees Celsius (the local mean annual air temperature), and many logs depict cooling trends with depth (anomalous gradients). Heating
Authors
Gary N. Paulachok