Dennis William Risser (Former Employee)
Science and Products
Filter Total Items: 45
Ground-water recharge in humid areas of the United States: A summary of Ground-Water Resources Program studies, 2003-2006 Ground-water recharge in humid areas of the United States: A summary of Ground-Water Resources Program studies, 2003-2006
Increased demands on water resources by a growing population and recent droughts have raised awareness about the adequacy of ground-water resources in humid areas of the United States. The spatial and temporal variability of ground-water recharge are key factors that need to be quantified to determine the sustainability of ground-water resources. Ground-water recharge is defined herein...
Authors
Geoffrey N. Delin, Dennis W. Risser
Multiple-methods investigation of recharge at a humid-region fractured rock site, Pennsylvania, USA Multiple-methods investigation of recharge at a humid-region fractured rock site, Pennsylvania, USA
Lysimeter-percolate and well-hydrograph analyses were combined to evaluate recharge for the Masser Recharge Site (central Pennsylvania, USA). In humid regions, aquifer recharge through an unconfined low-porosity fractured-rock aquifer can cause large magnitude water-table fluctuations over short time scales. The unsaturated hydraulic characteristics of the subsurface porous media control...
Authors
C.S. Heppner, J. R. Nimmo, G.J. Folmar, W.J. Gburek, D. W. Risser
Simulated water budgets and ground-water/surface-water interactions in Bushkill and parts of Monocacy Creek watersheds, Northampton County, Pennsylvania: A preliminary study with identification of data needs Simulated water budgets and ground-water/surface-water interactions in Bushkill and parts of Monocacy Creek watersheds, Northampton County, Pennsylvania: A preliminary study with identification of data needs
This report, prepared in cooperation with the Department of Environmental Protection, Office of Mineral Resources Management, provides a preliminary analysis of water budgets and generalized ground-water/surface-water interactions for Bushkill and parts of Monocacy Creek watersheds in Northampton County, Pa., by use of a ground-water flow model. Bushkill Creek watershed was selected for...
Authors
Dennis W. Risser
Estimates of ground-water recharge based on streamflow-hydrograph methods: Pennsylvania Estimates of ground-water recharge based on streamflow-hydrograph methods: Pennsylvania
This study, completed by the U.S. Geological Survey (USGS) in cooperation with the Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey (T&GS), provides estimates of ground-water recharge for watersheds throughout Pennsylvania computed by use of two automated streamflow-hydrograph-analysis methods--PART and RORA. The PART computer...
Authors
Dennis W. Risser, Randall W. Conger, James E. Ulrich, Michael P. Asmussen
Drought-sensitive aquifer settings in southeastern Pennsylvania Drought-sensitive aquifer settings in southeastern Pennsylvania
This report describes the results of a study conducted by the U.S. Geological Survey, in cooperation with the Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey, to determine drought-sensitive aquifer settings in southeastern Pennsylvania. Because all or parts of southeastern Pennsylvania have been in drought-warning or drought...
Authors
Tammy M. Zimmerman, Dennis W. Risser
Comparison of methods for estimating ground-water recharge and base flow at a small watershed underlain by fractured bedrock in the Eastern United States Comparison of methods for estimating ground-water recharge and base flow at a small watershed underlain by fractured bedrock in the Eastern United States
This study by the U.S. Geological Survey (USGS), in cooperation with the Agricultural Research Service (ARS), U.S. Department of Agriculture, compared multiple methods for estimating ground-water recharge and base flow (as a proxy for recharge) at sites in east-central Pennsylvania underlain by fractured bedrock and representative of a humid-continental climate. This study was one of...
Authors
Dennis W. Risser, William J. Gburek, Gordon J. Folmar
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: 45
Ground-water recharge in humid areas of the United States: A summary of Ground-Water Resources Program studies, 2003-2006 Ground-water recharge in humid areas of the United States: A summary of Ground-Water Resources Program studies, 2003-2006
Increased demands on water resources by a growing population and recent droughts have raised awareness about the adequacy of ground-water resources in humid areas of the United States. The spatial and temporal variability of ground-water recharge are key factors that need to be quantified to determine the sustainability of ground-water resources. Ground-water recharge is defined herein...
Authors
Geoffrey N. Delin, Dennis W. Risser
Multiple-methods investigation of recharge at a humid-region fractured rock site, Pennsylvania, USA Multiple-methods investigation of recharge at a humid-region fractured rock site, Pennsylvania, USA
Lysimeter-percolate and well-hydrograph analyses were combined to evaluate recharge for the Masser Recharge Site (central Pennsylvania, USA). In humid regions, aquifer recharge through an unconfined low-porosity fractured-rock aquifer can cause large magnitude water-table fluctuations over short time scales. The unsaturated hydraulic characteristics of the subsurface porous media control...
Authors
C.S. Heppner, J. R. Nimmo, G.J. Folmar, W.J. Gburek, D. W. Risser
Simulated water budgets and ground-water/surface-water interactions in Bushkill and parts of Monocacy Creek watersheds, Northampton County, Pennsylvania: A preliminary study with identification of data needs Simulated water budgets and ground-water/surface-water interactions in Bushkill and parts of Monocacy Creek watersheds, Northampton County, Pennsylvania: A preliminary study with identification of data needs
This report, prepared in cooperation with the Department of Environmental Protection, Office of Mineral Resources Management, provides a preliminary analysis of water budgets and generalized ground-water/surface-water interactions for Bushkill and parts of Monocacy Creek watersheds in Northampton County, Pa., by use of a ground-water flow model. Bushkill Creek watershed was selected for...
Authors
Dennis W. Risser
Estimates of ground-water recharge based on streamflow-hydrograph methods: Pennsylvania Estimates of ground-water recharge based on streamflow-hydrograph methods: Pennsylvania
This study, completed by the U.S. Geological Survey (USGS) in cooperation with the Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey (T&GS), provides estimates of ground-water recharge for watersheds throughout Pennsylvania computed by use of two automated streamflow-hydrograph-analysis methods--PART and RORA. The PART computer...
Authors
Dennis W. Risser, Randall W. Conger, James E. Ulrich, Michael P. Asmussen
Drought-sensitive aquifer settings in southeastern Pennsylvania Drought-sensitive aquifer settings in southeastern Pennsylvania
This report describes the results of a study conducted by the U.S. Geological Survey, in cooperation with the Pennsylvania Department of Conservation and Natural Resources, Bureau of Topographic and Geologic Survey, to determine drought-sensitive aquifer settings in southeastern Pennsylvania. Because all or parts of southeastern Pennsylvania have been in drought-warning or drought...
Authors
Tammy M. Zimmerman, Dennis W. Risser
Comparison of methods for estimating ground-water recharge and base flow at a small watershed underlain by fractured bedrock in the Eastern United States Comparison of methods for estimating ground-water recharge and base flow at a small watershed underlain by fractured bedrock in the Eastern United States
This study by the U.S. Geological Survey (USGS), in cooperation with the Agricultural Research Service (ARS), U.S. Department of Agriculture, compared multiple methods for estimating ground-water recharge and base flow (as a proxy for recharge) at sites in east-central Pennsylvania underlain by fractured bedrock and representative of a humid-continental climate. This study was one of...
Authors
Dennis W. Risser, William J. Gburek, Gordon J. Folmar
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.