Jon Jeffrey Starn, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 36
Simulations of Ground-Water Flow and Residence Time near Woodbury, Connecticut
Water withdrawn for public use from glacial stratified deposits in Woodbury, Connecticut, is a mixture of water from different source areas, each having a characteristic water-quality signature. The physical processes leading to this mixture were explored using a numerical model to simulate steady-state ground-water source areas and residence times for a public water-supply well (PSW-1) in Woodbur
Authors
J. Jeffrey Starn, Craig J. Brown
Simulation of ground-water flow to assess geohydrologic factors and their effect on source-water areas for bedrock wells in Connecticut
Generic ground-water-flow simulation models show that geohydrologic factors?fracture types, fracture geometry, and surficial materials?affect the size, shape, and location of source-water areas for bedrock wells. In this study, conducted by the U.S. Geological Survey in cooperation with the Connecticut Department of Public Health, ground-water flow was simulated to bedrock wells in three settings?
Authors
J. Jeffrey Starn, Janet Radway Stone
Hydrology and ground-water quality in glacial deposits in the Nepaug Reservoir watershed, northwestern Connecticut, 1998-2000
No abstract available.
Authors
Remo A. Mondazzi, J. Jeffrey Starn
Hydrogeology of sand and gravel deposits near the Nepaug Reservoir, New Hartford and Burlington, Connecticut
Sand and gravel deposits near the Nepaug Reservoir in New Hartford and Burlington, Connecticut, were studied to provide a basis for ongoing investigations that will evaluate water-quality conditions in the watershed and the effects of sand and gravel mining on the quality of water in the reservoir. In the Nepaug area, surficial glacial materials overlie crystalline bedrock that is predominantly sc
Authors
Janet Radway Stone, J. Jeffrey Starn, Jonathan Morrison
Delineation and Analysis of Uncertainty of Contributing Areas to Wells at the Southbury Training School, Southbury, Connecticut
Contributing areas to public-supply wells at the Southbury Training School in Southbury, Connecticut, were mapped by simulating ground-water flow in stratified glacial deposits in the lower Transylvania Brook watershed. The simulation used nonlinear regression methods and informational statistics to estimate parameters of a ground-water flow model using drawdown data from an aquifer test. The good
Authors
J. Jeffrey Starn, Janet Radway Stone, John R. Mullaney
Simulation of ground-water flow and application to the design of a contaminant removal system, Loring Air Force Base, Maine
The fractured-bedrock aquifer underlying the former Fire Training Area at Loring Air Force Base, Maine, has been contaminated with petroleum products as a result of fire training activities. A numerical model of the ground-water-flow system near the Fire Training Area was developed to provide information for the design and operation of a contaminant removal system. The goals of the simulation mode
Authors
J.J. Starn
Geohydrology and conceptual model of a ground-water-flow system near a Superfund site in Cheshire, Connecticut
Degradation of ground-water quality has been identified in an area of the north-central part of the town of Cheshire, Connecticut. An investigation by the U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency, was done during 1994-95 to characterize the unconsolidated glacial deposits and the sedimentary bedrock, integrate the local geohydrologic conditions with the
Authors
J. R. Stone, P. M. Barlow, J.J. Starn
Hydrogeology and simulation of ground-water flow in the alluvial aquifer at Louisville, Kentucky
The alluvial aquifer at Louisville, Ky., lies in a valley eroded by glacial meltwater that was later partly filled with outwash sand and gravel deposits. The aquifer is primarily unconfined, and the direction of flow is from the adjacent limestone and shale valley wall toward the Ohio River and major pumping centers. Pumpage and water-level data indicate that the alluvial aquifer was in a steady-s
Authors
M. A. Lyverse, J.J. Starn, M.D. Unthank
Geohydrology and simulation of ground-water flow in the aquifer system near Calvert City, Kentucky
The U.S. Geological Survey, in cooperation with the Kentucky Natural Resources and Environmental Protection Cabinet, constructed a two-dimensional, steady-state ground-water-flow model to estimate hydraulic properties, contributing areas to discharge boundaries, and the average linear velocity at selected locations in an aquifer system near Calvert City, Ky. Nonlinear regression was used to estima
Authors
J.J. Starn, L. D. Arihood, M.F. Rose
Annotated bibliography of selected references on ground-water resources and geohydrology of the Louisville area, Kentucky, 1944-93
Ground water resources in the Louisville area have long been the subject of intense research and investigation. Many investigations have resulted in reports that cover a variety of topics relative to the availability and use of ground water. This bibliography was prepared because of the continued interest in ground water in the Louisville area and the need for a single source of selected referen
Authors
J.J. Starn, D. S. Mull
Geohydrology of parts of Muhlenberg, Ohio, Butler, McLean, Todd, and Logan counties, Kentucky
Water-level, water-use, water-quality, and aquifer-yield data were collected during a well inventory in 1991 in part of western Kentucky. The data were overlaid on digital maps, using a Geographic Information System, to interpret the geohydrologic conditions within the study area. The discontinuous lithology of rocks in the area results in aquifers of limited areal extent in which local ground-wat
Authors
J.J. Starn, R.W. Forbes, C.J. Taylor, M.F. Rose
U. S. Geological Survey Toxic Substances Hydrology Program--Abstracts of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993
No abstract available.
Authors
David W. Morganwalp, David A. Aronson
Non-USGS Publications**
Starn, J.J., Bagtzoglou, A.C., and Robbins, G.A., 2010, Using atmospheric tracers to reduce uncertainty in groundwater recharge areas: Ground Water Volume 48, Issue 6, November/December 2010, Pages: 858–868. https://doi.org/10.1111/j.1745-6584.2010.00674.x
Starn, J.J., 2001, Analysis of uncertainty of contributing areas to wells using parameter estimation and Monte Carlo simulation: MODFLOW 2001 and Other Modeling Odysseys, September 11-14, 2001, Golden, Colorado, Proceedings: International Ground Water Modeling Center, Colorado School of Mines, and the U.S. Geological Survey, v. 1, p. 305-311.
Starn, J.J., 1994, Field application of nonlinear regression to estimate parameters of a two-dimensional ground-water flow model, in Proceedings, 1994 Groundwater Modeling Conference, Fort Collins, Colorado, August 10-12,1994: Colorado State University, p 575-582.
Starn, J.J., 1994, Apparent solute dispersion in an alluvial aquifer/stream system, in Morganwalp, D.W. and Aronson, D.A., eds., 1994, U.S. Geological Survey Toxic Substances Hydrology Program—Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water- Resource Investigations Report 94- 4015, p 935-940. https://doi.org/10.3133/wri944015
**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: 36
Simulations of Ground-Water Flow and Residence Time near Woodbury, Connecticut
Water withdrawn for public use from glacial stratified deposits in Woodbury, Connecticut, is a mixture of water from different source areas, each having a characteristic water-quality signature. The physical processes leading to this mixture were explored using a numerical model to simulate steady-state ground-water source areas and residence times for a public water-supply well (PSW-1) in Woodbur
Authors
J. Jeffrey Starn, Craig J. Brown
Simulation of ground-water flow to assess geohydrologic factors and their effect on source-water areas for bedrock wells in Connecticut
Generic ground-water-flow simulation models show that geohydrologic factors?fracture types, fracture geometry, and surficial materials?affect the size, shape, and location of source-water areas for bedrock wells. In this study, conducted by the U.S. Geological Survey in cooperation with the Connecticut Department of Public Health, ground-water flow was simulated to bedrock wells in three settings?
Authors
J. Jeffrey Starn, Janet Radway Stone
Hydrology and ground-water quality in glacial deposits in the Nepaug Reservoir watershed, northwestern Connecticut, 1998-2000
No abstract available.
Authors
Remo A. Mondazzi, J. Jeffrey Starn
Hydrogeology of sand and gravel deposits near the Nepaug Reservoir, New Hartford and Burlington, Connecticut
Sand and gravel deposits near the Nepaug Reservoir in New Hartford and Burlington, Connecticut, were studied to provide a basis for ongoing investigations that will evaluate water-quality conditions in the watershed and the effects of sand and gravel mining on the quality of water in the reservoir. In the Nepaug area, surficial glacial materials overlie crystalline bedrock that is predominantly sc
Authors
Janet Radway Stone, J. Jeffrey Starn, Jonathan Morrison
Delineation and Analysis of Uncertainty of Contributing Areas to Wells at the Southbury Training School, Southbury, Connecticut
Contributing areas to public-supply wells at the Southbury Training School in Southbury, Connecticut, were mapped by simulating ground-water flow in stratified glacial deposits in the lower Transylvania Brook watershed. The simulation used nonlinear regression methods and informational statistics to estimate parameters of a ground-water flow model using drawdown data from an aquifer test. The good
Authors
J. Jeffrey Starn, Janet Radway Stone, John R. Mullaney
Simulation of ground-water flow and application to the design of a contaminant removal system, Loring Air Force Base, Maine
The fractured-bedrock aquifer underlying the former Fire Training Area at Loring Air Force Base, Maine, has been contaminated with petroleum products as a result of fire training activities. A numerical model of the ground-water-flow system near the Fire Training Area was developed to provide information for the design and operation of a contaminant removal system. The goals of the simulation mode
Authors
J.J. Starn
Geohydrology and conceptual model of a ground-water-flow system near a Superfund site in Cheshire, Connecticut
Degradation of ground-water quality has been identified in an area of the north-central part of the town of Cheshire, Connecticut. An investigation by the U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency, was done during 1994-95 to characterize the unconsolidated glacial deposits and the sedimentary bedrock, integrate the local geohydrologic conditions with the
Authors
J. R. Stone, P. M. Barlow, J.J. Starn
Hydrogeology and simulation of ground-water flow in the alluvial aquifer at Louisville, Kentucky
The alluvial aquifer at Louisville, Ky., lies in a valley eroded by glacial meltwater that was later partly filled with outwash sand and gravel deposits. The aquifer is primarily unconfined, and the direction of flow is from the adjacent limestone and shale valley wall toward the Ohio River and major pumping centers. Pumpage and water-level data indicate that the alluvial aquifer was in a steady-s
Authors
M. A. Lyverse, J.J. Starn, M.D. Unthank
Geohydrology and simulation of ground-water flow in the aquifer system near Calvert City, Kentucky
The U.S. Geological Survey, in cooperation with the Kentucky Natural Resources and Environmental Protection Cabinet, constructed a two-dimensional, steady-state ground-water-flow model to estimate hydraulic properties, contributing areas to discharge boundaries, and the average linear velocity at selected locations in an aquifer system near Calvert City, Ky. Nonlinear regression was used to estima
Authors
J.J. Starn, L. D. Arihood, M.F. Rose
Annotated bibliography of selected references on ground-water resources and geohydrology of the Louisville area, Kentucky, 1944-93
Ground water resources in the Louisville area have long been the subject of intense research and investigation. Many investigations have resulted in reports that cover a variety of topics relative to the availability and use of ground water. This bibliography was prepared because of the continued interest in ground water in the Louisville area and the need for a single source of selected referen
Authors
J.J. Starn, D. S. Mull
Geohydrology of parts of Muhlenberg, Ohio, Butler, McLean, Todd, and Logan counties, Kentucky
Water-level, water-use, water-quality, and aquifer-yield data were collected during a well inventory in 1991 in part of western Kentucky. The data were overlaid on digital maps, using a Geographic Information System, to interpret the geohydrologic conditions within the study area. The discontinuous lithology of rocks in the area results in aquifers of limited areal extent in which local ground-wat
Authors
J.J. Starn, R.W. Forbes, C.J. Taylor, M.F. Rose
U. S. Geological Survey Toxic Substances Hydrology Program--Abstracts of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993
No abstract available.
Authors
David W. Morganwalp, David A. Aronson
Non-USGS Publications**
Starn, J.J., Bagtzoglou, A.C., and Robbins, G.A., 2010, Using atmospheric tracers to reduce uncertainty in groundwater recharge areas: Ground Water Volume 48, Issue 6, November/December 2010, Pages: 858–868. https://doi.org/10.1111/j.1745-6584.2010.00674.x
Starn, J.J., 2001, Analysis of uncertainty of contributing areas to wells using parameter estimation and Monte Carlo simulation: MODFLOW 2001 and Other Modeling Odysseys, September 11-14, 2001, Golden, Colorado, Proceedings: International Ground Water Modeling Center, Colorado School of Mines, and the U.S. Geological Survey, v. 1, p. 305-311.
Starn, J.J., 1994, Field application of nonlinear regression to estimate parameters of a two-dimensional ground-water flow model, in Proceedings, 1994 Groundwater Modeling Conference, Fort Collins, Colorado, August 10-12,1994: Colorado State University, p 575-582.
Starn, J.J., 1994, Apparent solute dispersion in an alluvial aquifer/stream system, in Morganwalp, D.W. and Aronson, D.A., eds., 1994, U.S. Geological Survey Toxic Substances Hydrology Program—Proceedings of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993: U.S. Geological Survey Water- Resource Investigations Report 94- 4015, p 935-940. https://doi.org/10.3133/wri944015
**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.