Richard Healy (Former Employee)
Science and Products
Healy, R.W., and Essaid, H.I., 2012, VS2DI: Model use, calibration, and validation. Transactions of the ASABE, v. 55, no. 3, p. 1249-1260.
Heilweil, V., Healy, R.W., and Harris, R., 2012, Noble gases and coupled heat/fluid flow modeling for evaluating hydrogeologic conditions of volcanic island aquifers. Journal of Hydrology, v. 464-465, p. 309-327, DOI:10.1016/j.jhydrol.2012.07.019.
Estimating groundwater recharge Estimating groundwater recharge
Groundwater recharge is the entry of fresh water into the saturated portion of the subsurface part of the hydrologic cycle, the modifier “saturated” indicating that the pressure of the pore water is greater than atmospheric. Briefly stated, recharge is downward flux across the water table. The term “groundwater recharge” can refer either to the multiple interacting processes generating...
Authors
David A. Stonestrom
Estimating groundwater recharge Estimating groundwater recharge
Understanding groundwater recharge is essential for successful management of water resources and modeling fluid and contaminant transport within the subsurface. This book provides a critical evaluation of the theory and assumptions that underlie methods for estimating rates of groundwater recharge. Detailed explanations of the methods are provided - allowing readers to apply many of the...
Authors
Richard W. Healy
Infiltration from an impoundment for coal‐bed natural gas, Powder River Basin, Wyoming: Evolution of water and sediment chemistry Infiltration from an impoundment for coal‐bed natural gas, Powder River Basin, Wyoming: Evolution of water and sediment chemistry
Development of coal‐bed natural gas (CBNG) in the Powder River Basin, Wyoming, has increased substantially in recent years. Among environmental concerns associated with this development is the fate of groundwater removed with the gas. A preferred water‐management option is storage in surface impoundments. As of January 2007, permits for more than 4000 impoundments had been issued within...
Authors
Richard W. Healy, Cynthia A. Rice, Timothy T. Bartos, Michael P. McKinley
Simulating water, solute, and heat transport in the subsurface with the VS2DI software package Simulating water, solute, and heat transport in the subsurface with the VS2DI software package
The software package VS2DI was developed by the U.S. Geological Survey for simulating water, solute, and heat transport in variably saturated porous media. The package consists of a graphical preprocessor to facilitate construction of a simulation, a postprocessor for visualizing simulation results, and two numerical models that solve for flow and solute transport (VS2DT) and flow and...
Authors
R. W. Healy
Water movement within the unsaturated zone in four agricultural areas of the United States Water movement within the unsaturated zone in four agricultural areas of the United States
Millions of tons of agricultural fertilizer and pesticides are applied annually in the USA. Due to the potential for these chemicals to migrate to groundwater, a study was conducted in 2004 using field data to calculate water budgets, rates of groundwater recharge and times of water travel through the unsaturated zone and to identify factors that influence these phenomena. Precipitation...
Authors
L.H. Fisher, R. W. Healy
Water Budgets: Foundations for Effective Water-Resources and Environmental Management Water Budgets: Foundations for Effective Water-Resources and Environmental Management
INTRODUCTION Water budgets provide a means for evaluating availability and sustainability of a water supply. A water budget simply states that the rate of change in water stored in an area, such as a watershed, is balanced by the rate at which water flows into and out of the area. An understanding of water budgets and underlying hydrologic processes provides a foundation for effective...
Authors
Richard W. Healy, Thomas C. Winter, James W. LaBaugh, O. Lehn Franke
Non-USGS Publications**
**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
Healy, R.W., and Essaid, H.I., 2012, VS2DI: Model use, calibration, and validation. Transactions of the ASABE, v. 55, no. 3, p. 1249-1260.
Heilweil, V., Healy, R.W., and Harris, R., 2012, Noble gases and coupled heat/fluid flow modeling for evaluating hydrogeologic conditions of volcanic island aquifers. Journal of Hydrology, v. 464-465, p. 309-327, DOI:10.1016/j.jhydrol.2012.07.019.
Estimating groundwater recharge Estimating groundwater recharge
Groundwater recharge is the entry of fresh water into the saturated portion of the subsurface part of the hydrologic cycle, the modifier “saturated” indicating that the pressure of the pore water is greater than atmospheric. Briefly stated, recharge is downward flux across the water table. The term “groundwater recharge” can refer either to the multiple interacting processes generating...
Authors
David A. Stonestrom
Estimating groundwater recharge Estimating groundwater recharge
Understanding groundwater recharge is essential for successful management of water resources and modeling fluid and contaminant transport within the subsurface. This book provides a critical evaluation of the theory and assumptions that underlie methods for estimating rates of groundwater recharge. Detailed explanations of the methods are provided - allowing readers to apply many of the...
Authors
Richard W. Healy
Infiltration from an impoundment for coal‐bed natural gas, Powder River Basin, Wyoming: Evolution of water and sediment chemistry Infiltration from an impoundment for coal‐bed natural gas, Powder River Basin, Wyoming: Evolution of water and sediment chemistry
Development of coal‐bed natural gas (CBNG) in the Powder River Basin, Wyoming, has increased substantially in recent years. Among environmental concerns associated with this development is the fate of groundwater removed with the gas. A preferred water‐management option is storage in surface impoundments. As of January 2007, permits for more than 4000 impoundments had been issued within...
Authors
Richard W. Healy, Cynthia A. Rice, Timothy T. Bartos, Michael P. McKinley
Simulating water, solute, and heat transport in the subsurface with the VS2DI software package Simulating water, solute, and heat transport in the subsurface with the VS2DI software package
The software package VS2DI was developed by the U.S. Geological Survey for simulating water, solute, and heat transport in variably saturated porous media. The package consists of a graphical preprocessor to facilitate construction of a simulation, a postprocessor for visualizing simulation results, and two numerical models that solve for flow and solute transport (VS2DT) and flow and...
Authors
R. W. Healy
Water movement within the unsaturated zone in four agricultural areas of the United States Water movement within the unsaturated zone in four agricultural areas of the United States
Millions of tons of agricultural fertilizer and pesticides are applied annually in the USA. Due to the potential for these chemicals to migrate to groundwater, a study was conducted in 2004 using field data to calculate water budgets, rates of groundwater recharge and times of water travel through the unsaturated zone and to identify factors that influence these phenomena. Precipitation...
Authors
L.H. Fisher, R. W. Healy
Water Budgets: Foundations for Effective Water-Resources and Environmental Management Water Budgets: Foundations for Effective Water-Resources and Environmental Management
INTRODUCTION Water budgets provide a means for evaluating availability and sustainability of a water supply. A water budget simply states that the rate of change in water stored in an area, such as a watershed, is balanced by the rate at which water flows into and out of the area. An understanding of water budgets and underlying hydrologic processes provides a foundation for effective...
Authors
Richard W. Healy, Thomas C. Winter, James W. LaBaugh, O. Lehn Franke
Non-USGS Publications**
**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.