Randall J Hunt, Ph.D. (Former Employee)
Science and Products
Filter Total Items: 150
Basin-scale simulation of current and potential climate changed hydrologic conditions in the Lake Michigan Basin, United States Basin-scale simulation of current and potential climate changed hydrologic conditions in the Lake Michigan Basin, United States
The Great Lakes Restoration Initiative (GLRI) is the largest public investment in the Great Lakes in two decades. A task force of 11 Federal agencies developed an action plan to implement the initiative. The U.S. Department of the Interior was one of the 11 agencies that entered into an interagency agreement with the U.S. Environmental Protection Agency as part of the GLRI to complete...
Authors
Daniel E. Christiansen, John F. Walker, Randall J. Hunt
Viruses as groundwater tracers: using ecohydrology to characterize short travel times in aquifers Viruses as groundwater tracers: using ecohydrology to characterize short travel times in aquifers
Viruses are attractive tracers of short (
Authors
Randall J. Hunt, Mark A. Borchardt, Kenneth R. Bradbury
Simulation of groundwater flow and interaction of groundwater and surface water on the Lac du Flambeau Reservation, Wisconsin Simulation of groundwater flow and interaction of groundwater and surface water on the Lac du Flambeau Reservation, Wisconsin
The Lac du Flambeau Band of Lake Superior Chippewa and Indian Health Service are interested in improving the understanding of groundwater flow and groundwater/surface-water interaction on the Lac du Flambeau Reservation (Reservation) in southwest Vilas County and southeast Iron County, Wisconsin, with particular interest in an understanding of the potential for contamination of...
Authors
Paul F. Juckem, Michael N. Fienen, Randall J. Hunt
Simulation of climate-change effects on streamflow, lake water budgets, and stream temperature using GSFLOW and SNTEMP, Trout Lake Watershed, Wisconsin Simulation of climate-change effects on streamflow, lake water budgets, and stream temperature using GSFLOW and SNTEMP, Trout Lake Watershed, Wisconsin
Although groundwater and surface water are considered a single resource, historically hydrologic simulations have not accounted for feedback loops between the groundwater system and other hydrologic processes. These feedbacks include timing and rates of evapotranspiration, surface runoff, soil-zone flow, and interactions with the groundwater system. Simulations that iteratively couple...
Authors
Randall J. Hunt, John F. Walker, William R. Selbig, Stephen M. Westenbroek, R. Steve Regan
Source and transport of human enteric viruses in deep municipal water supply wells Source and transport of human enteric viruses in deep municipal water supply wells
Until recently, few water utilities or researchers were aware of possible virus presence in deep aquifers and wells. During 2008 and 2009 we collected a time series of virus samples from six deep municipal water-supply wells. The wells range in depth from approximately 220 to 300 m and draw water from a sandstone aquifer. Three of these wells draw water from beneath a regional aquitard...
Authors
Kenneth R. Bradbury, Mark A. Borchardt, Madeline Gotkowitz, Susan K. Spencer, Jun Zhu, Randall J. Hunt
Approaches in highly parameterized inversion: bgaPEST, a Bayesian geostatistical approach implementation with PEST: documentation and instructions Approaches in highly parameterized inversion: bgaPEST, a Bayesian geostatistical approach implementation with PEST: documentation and instructions
The application bgaPEST is a highly parameterized inversion software package implementing the Bayesian Geostatistical Approach in a framework compatible with the parameter estimation suite PEST. Highly parameterized inversion refers to cases in which parameters are distributed in space or time and are correlated with one another. The Bayesian aspect of bgaPEST is related to Bayesian...
Authors
Michael N. Fienen, Marco D'Oria, John E. Doherty, Randall J. Hunt
Non-USGS Publications**
Abrams, D.B., Haitjema, H.M., Feinstein, D.T. and Hunt, R.J., 2015, Field test of a Hybrid Finite-Difference and Analytic Element regional model. Groundwater. doi: 10.1111/gwat.12319.
**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: 150
Basin-scale simulation of current and potential climate changed hydrologic conditions in the Lake Michigan Basin, United States Basin-scale simulation of current and potential climate changed hydrologic conditions in the Lake Michigan Basin, United States
The Great Lakes Restoration Initiative (GLRI) is the largest public investment in the Great Lakes in two decades. A task force of 11 Federal agencies developed an action plan to implement the initiative. The U.S. Department of the Interior was one of the 11 agencies that entered into an interagency agreement with the U.S. Environmental Protection Agency as part of the GLRI to complete...
Authors
Daniel E. Christiansen, John F. Walker, Randall J. Hunt
Viruses as groundwater tracers: using ecohydrology to characterize short travel times in aquifers Viruses as groundwater tracers: using ecohydrology to characterize short travel times in aquifers
Viruses are attractive tracers of short (
Authors
Randall J. Hunt, Mark A. Borchardt, Kenneth R. Bradbury
Simulation of groundwater flow and interaction of groundwater and surface water on the Lac du Flambeau Reservation, Wisconsin Simulation of groundwater flow and interaction of groundwater and surface water on the Lac du Flambeau Reservation, Wisconsin
The Lac du Flambeau Band of Lake Superior Chippewa and Indian Health Service are interested in improving the understanding of groundwater flow and groundwater/surface-water interaction on the Lac du Flambeau Reservation (Reservation) in southwest Vilas County and southeast Iron County, Wisconsin, with particular interest in an understanding of the potential for contamination of...
Authors
Paul F. Juckem, Michael N. Fienen, Randall J. Hunt
Simulation of climate-change effects on streamflow, lake water budgets, and stream temperature using GSFLOW and SNTEMP, Trout Lake Watershed, Wisconsin Simulation of climate-change effects on streamflow, lake water budgets, and stream temperature using GSFLOW and SNTEMP, Trout Lake Watershed, Wisconsin
Although groundwater and surface water are considered a single resource, historically hydrologic simulations have not accounted for feedback loops between the groundwater system and other hydrologic processes. These feedbacks include timing and rates of evapotranspiration, surface runoff, soil-zone flow, and interactions with the groundwater system. Simulations that iteratively couple...
Authors
Randall J. Hunt, John F. Walker, William R. Selbig, Stephen M. Westenbroek, R. Steve Regan
Source and transport of human enteric viruses in deep municipal water supply wells Source and transport of human enteric viruses in deep municipal water supply wells
Until recently, few water utilities or researchers were aware of possible virus presence in deep aquifers and wells. During 2008 and 2009 we collected a time series of virus samples from six deep municipal water-supply wells. The wells range in depth from approximately 220 to 300 m and draw water from a sandstone aquifer. Three of these wells draw water from beneath a regional aquitard...
Authors
Kenneth R. Bradbury, Mark A. Borchardt, Madeline Gotkowitz, Susan K. Spencer, Jun Zhu, Randall J. Hunt
Approaches in highly parameterized inversion: bgaPEST, a Bayesian geostatistical approach implementation with PEST: documentation and instructions Approaches in highly parameterized inversion: bgaPEST, a Bayesian geostatistical approach implementation with PEST: documentation and instructions
The application bgaPEST is a highly parameterized inversion software package implementing the Bayesian Geostatistical Approach in a framework compatible with the parameter estimation suite PEST. Highly parameterized inversion refers to cases in which parameters are distributed in space or time and are correlated with one another. The Bayesian aspect of bgaPEST is related to Bayesian...
Authors
Michael N. Fienen, Marco D'Oria, John E. Doherty, Randall J. Hunt
Non-USGS Publications**
Abrams, D.B., Haitjema, H.M., Feinstein, D.T. and Hunt, R.J., 2015, Field test of a Hybrid Finite-Difference and Analytic Element regional model. Groundwater. doi: 10.1111/gwat.12319.
**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.
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government