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Nitrogen in the Chesapeake Bay Watershed - A Century of Change, 1950–2050

National Award for Superior Communication Product

News Event

Domestic Well Water Quality in Marcellus Shale Region

Factors Affecting Groundwater Quality Used for Domestic Supply in Marcellus Shale Region of North-Central and North-East Pennsylvania

Journal Article

Geohydrologic and water-quality characterization of a fractured-bedrock test hole in an area of Marcellus Shale gas development, Sullivan County, Pennsylvania

Report at Pennsylvania Geological Survey

Publications are the cornerstone of the Pennsylvania Water Science Center’s dissemination of scientific data and conclusions. 

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Filter Total Items: 937

Modification of a method-of-characteristics solute-transport model to incorporate decay and equilibrium-controlled sorption or ion exchange

The U.S. Geological Survey computer model of two-dimensional solute transport and dispersion in ground water (Konikow and Bredehoeft, 1978) has been modified to incorporate the following types of chemical reactions: (1) first-order irreversible rate-reaction, such as radioactive decay; (2) reversible equilibrium-controlled sorption with linear, Freundlich, or Langmuir isotherms; and (3) reversible
Authors
D.J. Goode, Leonard F. Konikow
By
Water Resources Mission Area, Toxic Substances Hydrology, Pennsylvania Water Science Center

Suspended-sediment yields from an unmined area and from mined areas before and after reclamation in Pennsylvania, June 1978-September 1983

The U.S. Geological Survey, in cooperation with the Pennsylvania Department of Environmental Resources, has collected hydrologic data from areas in Tioga, Clearfield, and Fayette Counties to determine the effects of surface coal mining on sediment yields. The data were collected from June 1978 through September 1983. Rainfall, streamflow and suspended-sediment data were collected with automatic re
Authors
L.A. Reed, R. A. Hainly
By
Water Resources Mission Area, Pennsylvania Water Science Center

Physical, chemical, and biological data for selected streams in Chester County, Pennsylvania, 1969-80

This report presents physical, chemical, and biological data collected at 50 sampling sites on selected streams in Chester County, Pennsylvania from 1969 to 1980. The physical data consist of air and water temperature, stream discharge, suspended sediment, pH, specific conductance, and dissolved oxygen. The chemical data consist of laboratory determinations of total nutrients, major ions, and trac
Authors
C.R. Moore
By
Water Resources Mission Area, Pennsylvania Water Science Center

Water-resources activities of the U.S. Geological Survey in Pennsylvania, 1988-89

As part of the U.S. Geological Survey Water Resources Division 's objective of presenting impartial, accurate data and scientific analyses equally to all interested parties, current activities in Pennsylvania are described by a listing of project location, cooperator(s), period of project, project chief, headquarters office, problem, objective, approach, progress and plans. The basic data programs
Authors
Robert E. Helm
By
Water Resources Mission Area, Pennsylvania Water Science Center

Groundwater velocity magnitude in radionuclide transport calculations

Analytical solutions have been developed for many conceptual models of solute transport in groundwater (Bear 1979). Although these models usually rely on assumptions too restrictive for accurate description of actual field situations, they are useful in understanding groundwater transport and in evaluating the relative importance of the subsurface processes affecting transport. In addition, these
Authors
Daniel J. Goode
By
Water Resources Mission Area, Pennsylvania Water Science Center

Water resources data for Pennsylvania, water year 1987. Volume 2: Susquehanna and Potomac River basins

No abstract available.
Authors
W.C. Loper, T.E. Behrendt, W.P. Schaffstall
By
Pennsylvania Water Science Center

Simulation of ground-water flow in the lower sand unit of the Potomac-Raritan-Magothy aquifer system, Philadelphia, Pennsylvania

Ground-water flow in the lower sand unit of the Potomac-Raritan-Magothy aquifer system in Philadelphia was simulated with a two-dimensional finite- difference ground-water model. The modeled 133-square-mile area also included parts of Delaware County, Pennsylvania, and Camden and Gloucester Counties, New Jersey. The lower sand unit is Cretaceous in age and consists of well- sorted coarse sand and
Authors
R. A. Sloto
By
Water Resources Mission Area, New Jersey Water Science Center, Pennsylvania Water Science Center

Effects of urbanization on storm-runoff volume and peak discharge of Valley Creek, eastern Chester County, Pennsylvania

Peak discharge and runoff volume were simulated for 21 storms in the Valley Creek basin using the U.S. Geological Survey Distributed Routing Rainfall-Runoff Model (DR3M). Storm peak discharges ranged from 301 to 900 cubic feet per second. Rainfall was measured at three recording rain gages in the basin. Observed and simulated runoff volumes and peak discharges were compared for the upper 20.8 squa
Authors
R. A. Sloto
By
Water Resources Mission Area, Pennsylvania Water Science Center

Effects of flood controls proposed for West Branch Brandywine Creek, Chester County, Pennsylvania

Twenty-four-hour rainfall, distributed over time according to the U.S. Soil Conservation Service type II rainfall distribution, was used as input to calibrated rainfall-runoff models of three subbasins in the West Branch Brandywine Creek watershed. The effects of four proposed flood controls were evaluated by using these rainfalls to simulate discharge hydrographs with and without the flood contro
Authors
R. A. Sloto
By
Water Resources Mission Area, Pennsylvania Water Science Center

Water resources of Oley Township, Berks County, Pennsylvania

Oley Township covers an area of 24 square miles, about half of which is underlain by highly permeable carbonate rocks. Nondomestic wells in these rocks typically have yields of 200 gallons per minute, and some wells yield more than 1,000 gallons per minute. Ground-water yield for Oley Township is about 0.5 million gallons per day per square mile. Thus, about 12 million gallons per day could be pum
Authors
G. N. Paulachok, C. R. Wood
By
Water Resources Mission Area, Pennsylvania Water Science Center

Sediment loads, discharges, and yields in the East Branch Mahoning Creek basin, Clearfield and Jefferson Counties, Pennsylvania, June 1979 through September 1981

Rainfall, streamflow, and sediment discharge data were collected from the East Branch Mahoning Creek basin from June 1979 through September 1981 to evaluate sediment discharges from an area in which erosion and sediment controls were being used on surface mined areas. Sediment yields from the basin averaged 144 tons/sq mi/year. During the study, 9,570 tons of sediment were transported from the Eas
Authors
C. A. Loper, K. L. Wetzel
By
Water Resources Mission Area, Pennsylvania Water Science Center

Simulation of ground-water flow in aquifers along the Susquehanna River in Columbia County, Pennsylvania

A numerical model of groundwater flow was developed for a 10.3 sq mi area along the Susquehanna River in Columbia County, east central Pennsylvania. Groundwater in the model area primarily is in secondary openings in the carbonate--and clastic-rock aquifers and primary openings in the glacial-outwash aquifer that discontinuously overlies bedrock. The groundwater flow model was calibrated under ave
Authors
J.H. Williams, G.E. Senko
By
Water Resources Mission Area, Pennsylvania Water Science Center