Daniel T Feinstein (Former Employee)
Science and Products
Filter Total Items: 25
A hybrid finite-difference and analytic element groundwater model
Regional finite-difference models tend to have large cell sizes, often on the order of 1–2 km on a side. Although the regional flow patterns in deeper formations may be adequately represented by such a model, the intricate surface water and groundwater interactions in the shallower layers are not. Several stream reaches and nearby wells may occur in a single cell, precluding any meaningful modelin
Authors
Henk M. Haitjema, Daniel T. Feinstein, Randall J. Hunt, Maksym Gusyev
Hypothetical Modeling of Redox Conditions Within a Complex Ground-Water Flow Field in a Glacial Setting
This report describes a modeling approach for studying how redox conditions evolve under the influence of a complex ground-water flow field. The distribution of redox conditions within a flow system is of interest because of the intrinsic susceptibility of an aquifer to redox-sensitive, naturally occurring contaminants - such as arsenic - as well as anthropogenic contaminants - such as chlorinated
Authors
Daniel T. Feinstein, Mary Ann Thomas
Development and application of a screening model for simulating regional ground-water flow in the St. Croix River basin, Minnesota and Wisconsin
A series of databases and an accompanying screening model were constructed by the U.S. Geological Survey, in cooperation with the National Park Service, to better understand the regional ground-water-flow system and its relation to stream drainage in the St. Croix River Basin. The St. Croix River and its tributaries drain about 8,000 square miles in northeastern Minnesota and northwestern Wisconsi
Authors
Daniel T. Feinstein, Cheryl A. Buchwald, Charles P. Dunning, Randall J. Hunt
The importance of diverse data types to calibrate a watershed model of the Trout Lake Basin, Northern Wisconsin, USA
As part of the USGS Water, Energy, and Biogeochemical Budgets project and the NSF Long-Term Ecological Research work, a parameter estimation code was used to calibrate a deterministic groundwater flow model of the Trout Lake Basin in northern Wisconsin. Observations included traditional calibration targets (head, lake stage, and baseflow observations) as well as unconventional targets such as grou
Authors
R. J. Hunt, D. T. Feinstein, C.D. Pint, M.P. Anderson
The vertical hydraulic conductivity of an aquitard at two spatial scales
Aquitards protect underlying aquifers from contaminants and limit recharge to those aquifers. Understanding the mechanisms and quantity of ground water flow across aquitards to underlying aquifers is essential for ground water planning and assessment. We present results of laboratory testing for shale hydraulic conductivities, a methodology for determining the vertical hydraulic conductivity (Kv)
Authors
D.J. Hart, K. R. Bradbury, D. T. Feinstein
Ground-water modeling of pumping effects near regional ground-water divides and river/aquifer systems - Results and implications of numerical experiments
Agreements between United States governors and Canadian territorial premiers establish water-management principles and a framework for protecting Great Lakes waters, including ground water, from diversion and consumptive uses. The issue of ground-water diversions out of the Great Lakes Basin by large-scale pumping near the divides has been raised. Two scenario models, in which regional ground-wate
Authors
Rodney A. Sheets, Denise H. Dumouchelle, Daniel T. Feinstein
Simulation of ground-water flow, surface-water flow, and a deep sewer tunnel system in the Menomonee Valley, Milwaukee, Wisconsin
Numerical models were constructed for simulation of ground-water flow in the Menomonee Valley Brownfield, in Milwaukee, Wisconsin. An understanding of ground-water flow is necessary to develop an efficient program to sample ground water for contaminants. Models were constructed in a stepwise fashion, beginning with a regional, single-layer, analytic-element model (GFLOW code) that provided boundar
Authors
C. P. Dunning, D. T. Feinstein, R. J. Hunt, J. T. Krohelski
The value of long-term monitoring in the development of ground-water-flow models
As environmental issues have come to the forefront of public concern, so has the awareness of the importance of ground water in the overall water cycle and as a source of the Nation’s drinking water. Heightened interest has spawned a host of scientific enterprises (Taylor and Alley, 2001). Some activities are directed toward collection of water-level data and related information to monitor the phy
Authors
Daniel T. Feinstein, David J. Hart, James T. Krohelski
Simulation of an urban ground-water-flow system in the Menomonee Valley, Milwaukee, Wisconsin using analytic element modeling
A single-layer, steady-state analytic element model was constructed to simulate shallow ground-water flow in the Menomonee Valley, an old industrial center southwest of downtown Milwaukee, Wisconsin. Project objectives were to develop an understanding of the shallow ground-water flow system and identify primary receptors of recharge to the valley. The analytic element model simulates flow in a 18.
Authors
C. P. Dunning, D. T. Feinstein
Mechanisms of electron acceptor utilization: Implications for simulating anaerobic biodegradation
Simulation of biodegradation reactions within a reactive transport framework requires information on mechanisms of terminal electron acceptor processes (TEAPs). In initial modeling efforts, TEAPs were approximated as occurring sequentially, with the highest energy-yielding electron acceptors (e.g. oxygen) consumed before those that yield less energy (e.g., sulfate). Within this framework in a stea
Authors
M.E. Schreiber, G.R. Carey, D. T. Feinstein, J.M. Bahr
Stepwise use of GFLOW and MODFLOW to determine relative importance of shallow and deep receptors
A stepwise modeling approach is implemented in which a regional one-layer analytic element model is used to simulate the flow system and to furnish boundary conditions for an extracted local three-dimensional model. In this case study the stepwise approach is used to evaluate the fate of recharge in the Menomonee Valley adjacent to Lake Michigan. Two major receptors exist for recharge that flows t
Authors
D. Feinstein, C. Dunning, R. J. Hunt, J. Krohelski
Simulating ground water-lake interactions: Approaches and insights
Approaches for modeling lake-ground water interactions have evolved significantly from early simulations that used fixed lake stages specified as constant head to sophisticated LAK packages for MODFLOW. Although model input can be complex, the LAK package capabilities and output are superior to methods that rely on a fixed lake stage and compare well to other simple methods where lake stage can be
Authors
R. J. Hunt, H.M. Haitjema, J. T. Krohelski, D. T. Feinstein
Science and Products
Filter Total Items: 25
A hybrid finite-difference and analytic element groundwater model
Regional finite-difference models tend to have large cell sizes, often on the order of 1–2 km on a side. Although the regional flow patterns in deeper formations may be adequately represented by such a model, the intricate surface water and groundwater interactions in the shallower layers are not. Several stream reaches and nearby wells may occur in a single cell, precluding any meaningful modelin
Authors
Henk M. Haitjema, Daniel T. Feinstein, Randall J. Hunt, Maksym Gusyev
Hypothetical Modeling of Redox Conditions Within a Complex Ground-Water Flow Field in a Glacial Setting
This report describes a modeling approach for studying how redox conditions evolve under the influence of a complex ground-water flow field. The distribution of redox conditions within a flow system is of interest because of the intrinsic susceptibility of an aquifer to redox-sensitive, naturally occurring contaminants - such as arsenic - as well as anthropogenic contaminants - such as chlorinated
Authors
Daniel T. Feinstein, Mary Ann Thomas
Development and application of a screening model for simulating regional ground-water flow in the St. Croix River basin, Minnesota and Wisconsin
A series of databases and an accompanying screening model were constructed by the U.S. Geological Survey, in cooperation with the National Park Service, to better understand the regional ground-water-flow system and its relation to stream drainage in the St. Croix River Basin. The St. Croix River and its tributaries drain about 8,000 square miles in northeastern Minnesota and northwestern Wisconsi
Authors
Daniel T. Feinstein, Cheryl A. Buchwald, Charles P. Dunning, Randall J. Hunt
The importance of diverse data types to calibrate a watershed model of the Trout Lake Basin, Northern Wisconsin, USA
As part of the USGS Water, Energy, and Biogeochemical Budgets project and the NSF Long-Term Ecological Research work, a parameter estimation code was used to calibrate a deterministic groundwater flow model of the Trout Lake Basin in northern Wisconsin. Observations included traditional calibration targets (head, lake stage, and baseflow observations) as well as unconventional targets such as grou
Authors
R. J. Hunt, D. T. Feinstein, C.D. Pint, M.P. Anderson
The vertical hydraulic conductivity of an aquitard at two spatial scales
Aquitards protect underlying aquifers from contaminants and limit recharge to those aquifers. Understanding the mechanisms and quantity of ground water flow across aquitards to underlying aquifers is essential for ground water planning and assessment. We present results of laboratory testing for shale hydraulic conductivities, a methodology for determining the vertical hydraulic conductivity (Kv)
Authors
D.J. Hart, K. R. Bradbury, D. T. Feinstein
Ground-water modeling of pumping effects near regional ground-water divides and river/aquifer systems - Results and implications of numerical experiments
Agreements between United States governors and Canadian territorial premiers establish water-management principles and a framework for protecting Great Lakes waters, including ground water, from diversion and consumptive uses. The issue of ground-water diversions out of the Great Lakes Basin by large-scale pumping near the divides has been raised. Two scenario models, in which regional ground-wate
Authors
Rodney A. Sheets, Denise H. Dumouchelle, Daniel T. Feinstein
Simulation of ground-water flow, surface-water flow, and a deep sewer tunnel system in the Menomonee Valley, Milwaukee, Wisconsin
Numerical models were constructed for simulation of ground-water flow in the Menomonee Valley Brownfield, in Milwaukee, Wisconsin. An understanding of ground-water flow is necessary to develop an efficient program to sample ground water for contaminants. Models were constructed in a stepwise fashion, beginning with a regional, single-layer, analytic-element model (GFLOW code) that provided boundar
Authors
C. P. Dunning, D. T. Feinstein, R. J. Hunt, J. T. Krohelski
The value of long-term monitoring in the development of ground-water-flow models
As environmental issues have come to the forefront of public concern, so has the awareness of the importance of ground water in the overall water cycle and as a source of the Nation’s drinking water. Heightened interest has spawned a host of scientific enterprises (Taylor and Alley, 2001). Some activities are directed toward collection of water-level data and related information to monitor the phy
Authors
Daniel T. Feinstein, David J. Hart, James T. Krohelski
Simulation of an urban ground-water-flow system in the Menomonee Valley, Milwaukee, Wisconsin using analytic element modeling
A single-layer, steady-state analytic element model was constructed to simulate shallow ground-water flow in the Menomonee Valley, an old industrial center southwest of downtown Milwaukee, Wisconsin. Project objectives were to develop an understanding of the shallow ground-water flow system and identify primary receptors of recharge to the valley. The analytic element model simulates flow in a 18.
Authors
C. P. Dunning, D. T. Feinstein
Mechanisms of electron acceptor utilization: Implications for simulating anaerobic biodegradation
Simulation of biodegradation reactions within a reactive transport framework requires information on mechanisms of terminal electron acceptor processes (TEAPs). In initial modeling efforts, TEAPs were approximated as occurring sequentially, with the highest energy-yielding electron acceptors (e.g. oxygen) consumed before those that yield less energy (e.g., sulfate). Within this framework in a stea
Authors
M.E. Schreiber, G.R. Carey, D. T. Feinstein, J.M. Bahr
Stepwise use of GFLOW and MODFLOW to determine relative importance of shallow and deep receptors
A stepwise modeling approach is implemented in which a regional one-layer analytic element model is used to simulate the flow system and to furnish boundary conditions for an extracted local three-dimensional model. In this case study the stepwise approach is used to evaluate the fate of recharge in the Menomonee Valley adjacent to Lake Michigan. Two major receptors exist for recharge that flows t
Authors
D. Feinstein, C. Dunning, R. J. Hunt, J. Krohelski
Simulating ground water-lake interactions: Approaches and insights
Approaches for modeling lake-ground water interactions have evolved significantly from early simulations that used fixed lake stages specified as constant head to sophisticated LAK packages for MODFLOW. Although model input can be complex, the LAK package capabilities and output are superior to methods that rely on a fixed lake stage and compare well to other simple methods where lake stage can be
Authors
R. J. Hunt, H.M. Haitjema, J. T. Krohelski, D. T. Feinstein