Dennis William Risser (Former Employee)
Science and Products
Filter Total Items: 44
Case study for delineating a contributing area to a well in a fractured siliciclastic-bedrock aquifer near Lansdale, Pennsylvania
A supply well used by the North Penn Water Authority near Lansdale, Pa., was selected as a case study for delineating a contributing area in a fractured siliciclastic-bedrock aquifer. The study emphasized the importance of refining the understanding of factors that control ground-water movement to the well by conducting (1) geophysical logging and flow measurements, (2) ground-water level monitori
Authors
Gary J. Barton, Dennis W. Risser, Daniel G. Galeone, Daniel J. Goode
Hydrogeology and simulation of ground-water flow at the Gettysburg Elevator Plant Superfund Site, Adams County, Pennsylvania
Ground water in Triassic-age sedimentary fractured-rock aquifers in the area of Gettysburg, Pa., is used as drinking water and for industrial and commercial supply. In 1983, ground water at the Gettysburg Elevator Plant was found by the Pennsylvania Department of Environmental Resources to be contaminated with trichloroethene, 1,1,1-trichloroethane, and other synthetic organic compounds. As part o
Authors
Dennis J. Low, Daniel J. Goode, Dennis W. Risser
Hydrologic effects of the Pymatuning earthquake of September 25, 1998, in northwestern Pennsylvania
Within hours after the Pymatuning earthquake of September 25, 1998, in northwestern Pennsylvania, local residents reported wells becoming dry, wells beginning to flow, and the formation of new springs. About 120 household-supply wells reportedly went dry within 3 months after the earthquake. About 80 of these wells were on a ridge between Jamestown and Greenville, where water-level declines of as
Authors
Gary M. Fleeger, Daniel J. Goode, Theodore F. Buckwalter, Dennis W. Risser
Case study for delineating a contributing area to a water-supply well in a fractured crystalline-bedrock aquifer, Stewartstown, Pennsylvania
The Trouts Lane well field in Stewartstown, Pa., was selected as a case study for delineating a contributing area in a fractured crystalline-bedrock aquifer. The study emphasized the importance of refining the understanding of boundary conditions and major heterogeneities that affect ground-water movement to the supply well by conducting (1) fracture-trace mapping, (2) borehole logging and flow me
Authors
Gary J. Barton, Dennis W. Risser, Daniel G. Galeone, Randall W. Conger
Preliminary results from the investigation of the Pymatuning earthquake of September 25, 1998
The Pymatuning earthquake occurred on Friday, September 25, 1998, at 19:52:52 Universal Coordinated Time (UTC), or 3:52:52 p.m. EDT, near Jamestown, Pa., at the southern end of the Pymatuning Reservoir, which straddles the Ohio-Pennsylvania border. The National Earthquake Information Center (NEIC) determined that the event had a magnitude of 5.2 mbLg (a magnitude scale used to measure the size of
Authors
John Armbruster, Henry Barton, Paul Bodin, Theodore Buckwalter, Jon Cox, Edward Cranswick, James Dewey, Gary Fleeger, Margaret Hopper, Stephen Horton, Donald Hoskins, Deborah Kilb, Mark Meremonte, Ann Metzger, Dennis Risser, Leonardo Seeber, Kaye Shedlock, Katherine Stanley, Mitchell Withers, Madeleine Zirbes
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management
The U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture and Pennsylvania Department of Environmental Protection, investigated the effects of agricultural best-management practices on water quality in the Conestoga River headwaters watershed. This report describes environmental factors and the surface-water and ground-water quality of one 47.5-acre field site, Field-Site
Authors
E. H. Koerkle, D. W. Hall, D. W. Risser, P. L. Lietman, D. C. Chichester
Water-quality assessment of the lower Susquehanna River basin, Pennsylvania and Maryland: Environmental setting
No abstract available
Authors
Dennis W. Risser, Steven F. Siwiec
A strategy for delineating the area of ground-water contribution to wells completed in fractured bedrock aquifers in Pennsylvania
Delineating a contributing area to a well completed in a fractured bedrock aquifer in Pennsylvania is difficult because the hydrogeologic characteristics of fractured rocks are extremely complex. Because of this complexity, a single method or technique to delineate a contributing area will not be applicable for all wells completed in fractured-bedrock aquifers. Therefore, a strategy for refining t
Authors
D. W. Risser, G. J. Barton
Analysis of meteorological data and water chemistry of Latir Lakes, Taos County, New Mexico, 1985-88
Data were analyzed to determine the chemistry of atmospheric deposition and water of the Latir Lakes in Taos County New Mexico, from 1985 to 1988. The Latir Lakes consist of a series of nine paternoster lakes that range in altitude from 11,061 to 11,893 feet above sea level. The pH of wet precipitation generally ranged from 4.6 to 5.5 and the specific conductance of wet precipitation ranged from 1
Authors
S. K. Anderholm, R. G. Roybal, D. W. Risser, Georgene Somers
Evaluation of methods for delineating areas that contribute water to wells completed in valley-fill aquifers in Pennsylvania
Valley-fill aquifers in Pennsylvania are the source of drinking water for many wells in the glaciated parts of the State and along major river valleys. These aquifers area subject to contamination because of their shallow water-table depth and highly transmissive sediments. The possibility for contamination of water-supply wells in valley-fill aquifers can be minimized by excluding activities that
Authors
Dennis W. Risser, Thomas M. Madden
Effects of agricultural nutrient management on nitrogen fate and transport in Lancaster County, Pennsylvania
Nitrogen inputs to, and outputs from, a 55-acre site in Lancaster County, Pennsylvania, were estimated to determine the pathways and relative magnitude of loads of nitrogen entering and leaving the site, and to compare the loads of nitrogen before and after the implementation of nutrient management. Inputs of nitrogen to the site were manure fertilizer, commercial fertilizer, nitrogen in precipita
Authors
D. W. Hall, D. W. Risser
Geohydrology and potential effects of development of freshwater resources in the northern part of the Hueco Bolson, Dona Ana and Otero Counties, New Mexico, and El Paso County, Texas
No abstract available.
Authors
B. R. Orr, D. W. Risser
Non-USGS Publications**
Heilweil, V.M., Grieve, P.L., Hynek, S.A., Brantley, S.L., Solomon, D.K, Risser, D.W., 2015, Stream measurements locate thermogenic methane fluxes in groundwater discharge in an area of shale-gas development: Environmental Science and Technology, vol. 49, no. 7, p. 4057-4065, https://doi.org/10.1021/es503882b.
Barton, G.J., and Risser, D.W., 1992, Approach for delineating the contributing areas of a well field in a carbonate-valley aquifer: Ground Water Management, Book 10, p. 59-76 in Proceedings of the Third conference on Hydrogeology, ecology, monitoring, and management of ground water in karst terranes, U.S. EPA and National Ground Water Association, December 4-6, 1991, Nashville, Tennessee.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Filter Total Items: 44
Case study for delineating a contributing area to a well in a fractured siliciclastic-bedrock aquifer near Lansdale, Pennsylvania
A supply well used by the North Penn Water Authority near Lansdale, Pa., was selected as a case study for delineating a contributing area in a fractured siliciclastic-bedrock aquifer. The study emphasized the importance of refining the understanding of factors that control ground-water movement to the well by conducting (1) geophysical logging and flow measurements, (2) ground-water level monitori
Authors
Gary J. Barton, Dennis W. Risser, Daniel G. Galeone, Daniel J. Goode
Hydrogeology and simulation of ground-water flow at the Gettysburg Elevator Plant Superfund Site, Adams County, Pennsylvania
Ground water in Triassic-age sedimentary fractured-rock aquifers in the area of Gettysburg, Pa., is used as drinking water and for industrial and commercial supply. In 1983, ground water at the Gettysburg Elevator Plant was found by the Pennsylvania Department of Environmental Resources to be contaminated with trichloroethene, 1,1,1-trichloroethane, and other synthetic organic compounds. As part o
Authors
Dennis J. Low, Daniel J. Goode, Dennis W. Risser
Hydrologic effects of the Pymatuning earthquake of September 25, 1998, in northwestern Pennsylvania
Within hours after the Pymatuning earthquake of September 25, 1998, in northwestern Pennsylvania, local residents reported wells becoming dry, wells beginning to flow, and the formation of new springs. About 120 household-supply wells reportedly went dry within 3 months after the earthquake. About 80 of these wells were on a ridge between Jamestown and Greenville, where water-level declines of as
Authors
Gary M. Fleeger, Daniel J. Goode, Theodore F. Buckwalter, Dennis W. Risser
Case study for delineating a contributing area to a water-supply well in a fractured crystalline-bedrock aquifer, Stewartstown, Pennsylvania
The Trouts Lane well field in Stewartstown, Pa., was selected as a case study for delineating a contributing area in a fractured crystalline-bedrock aquifer. The study emphasized the importance of refining the understanding of boundary conditions and major heterogeneities that affect ground-water movement to the supply well by conducting (1) fracture-trace mapping, (2) borehole logging and flow me
Authors
Gary J. Barton, Dennis W. Risser, Daniel G. Galeone, Randall W. Conger
Preliminary results from the investigation of the Pymatuning earthquake of September 25, 1998
The Pymatuning earthquake occurred on Friday, September 25, 1998, at 19:52:52 Universal Coordinated Time (UTC), or 3:52:52 p.m. EDT, near Jamestown, Pa., at the southern end of the Pymatuning Reservoir, which straddles the Ohio-Pennsylvania border. The National Earthquake Information Center (NEIC) determined that the event had a magnitude of 5.2 mbLg (a magnitude scale used to measure the size of
Authors
John Armbruster, Henry Barton, Paul Bodin, Theodore Buckwalter, Jon Cox, Edward Cranswick, James Dewey, Gary Fleeger, Margaret Hopper, Stephen Horton, Donald Hoskins, Deborah Kilb, Mark Meremonte, Ann Metzger, Dennis Risser, Leonardo Seeber, Kaye Shedlock, Katherine Stanley, Mitchell Withers, Madeleine Zirbes
Evaluation of agricultural best-management practices in the Conestoga River headwaters, Pennsylvania: Hydrology of a small carbonate site near Ephrata, Pennsylvania, prior to implementation of nutrient management
The U.S. Geological Survey, in cooperation with the U.S. Department of Agriculture and Pennsylvania Department of Environmental Protection, investigated the effects of agricultural best-management practices on water quality in the Conestoga River headwaters watershed. This report describes environmental factors and the surface-water and ground-water quality of one 47.5-acre field site, Field-Site
Authors
E. H. Koerkle, D. W. Hall, D. W. Risser, P. L. Lietman, D. C. Chichester
Water-quality assessment of the lower Susquehanna River basin, Pennsylvania and Maryland: Environmental setting
No abstract available
Authors
Dennis W. Risser, Steven F. Siwiec
A strategy for delineating the area of ground-water contribution to wells completed in fractured bedrock aquifers in Pennsylvania
Delineating a contributing area to a well completed in a fractured bedrock aquifer in Pennsylvania is difficult because the hydrogeologic characteristics of fractured rocks are extremely complex. Because of this complexity, a single method or technique to delineate a contributing area will not be applicable for all wells completed in fractured-bedrock aquifers. Therefore, a strategy for refining t
Authors
D. W. Risser, G. J. Barton
Analysis of meteorological data and water chemistry of Latir Lakes, Taos County, New Mexico, 1985-88
Data were analyzed to determine the chemistry of atmospheric deposition and water of the Latir Lakes in Taos County New Mexico, from 1985 to 1988. The Latir Lakes consist of a series of nine paternoster lakes that range in altitude from 11,061 to 11,893 feet above sea level. The pH of wet precipitation generally ranged from 4.6 to 5.5 and the specific conductance of wet precipitation ranged from 1
Authors
S. K. Anderholm, R. G. Roybal, D. W. Risser, Georgene Somers
Evaluation of methods for delineating areas that contribute water to wells completed in valley-fill aquifers in Pennsylvania
Valley-fill aquifers in Pennsylvania are the source of drinking water for many wells in the glaciated parts of the State and along major river valleys. These aquifers area subject to contamination because of their shallow water-table depth and highly transmissive sediments. The possibility for contamination of water-supply wells in valley-fill aquifers can be minimized by excluding activities that
Authors
Dennis W. Risser, Thomas M. Madden
Effects of agricultural nutrient management on nitrogen fate and transport in Lancaster County, Pennsylvania
Nitrogen inputs to, and outputs from, a 55-acre site in Lancaster County, Pennsylvania, were estimated to determine the pathways and relative magnitude of loads of nitrogen entering and leaving the site, and to compare the loads of nitrogen before and after the implementation of nutrient management. Inputs of nitrogen to the site were manure fertilizer, commercial fertilizer, nitrogen in precipita
Authors
D. W. Hall, D. W. Risser
Geohydrology and potential effects of development of freshwater resources in the northern part of the Hueco Bolson, Dona Ana and Otero Counties, New Mexico, and El Paso County, Texas
No abstract available.
Authors
B. R. Orr, D. W. Risser
Non-USGS Publications**
Heilweil, V.M., Grieve, P.L., Hynek, S.A., Brantley, S.L., Solomon, D.K, Risser, D.W., 2015, Stream measurements locate thermogenic methane fluxes in groundwater discharge in an area of shale-gas development: Environmental Science and Technology, vol. 49, no. 7, p. 4057-4065, https://doi.org/10.1021/es503882b.
Barton, G.J., and Risser, D.W., 1992, Approach for delineating the contributing areas of a well field in a carbonate-valley aquifer: Ground Water Management, Book 10, p. 59-76 in Proceedings of the Third conference on Hydrogeology, ecology, monitoring, and management of ground water in karst terranes, U.S. EPA and National Ground Water Association, December 4-6, 1991, Nashville, Tennessee.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.