Eric Reichard
Dr. Eric Reichard is Scientist Emeritus at the U.S. Geological Survey (USGS).
Eric Reichard is an Emeritus Scientist with the USGS California Water Science Center (CAWSC). He served as the Regional Director of the USGS Southwest Region from 2022-25, providing leadership to the ten USGS Science Centers in Arizona, California, and Nevada, and representing the Region at the national level. He served as CAWSC Center Director from 2009-2022, and previously worked as a Research Hydrologist and Program Chief at the CAWSC. During his tenure at the USGS, he led projects addressing a variety of hydrologic issues, including groundwater flow and transport, integrated groundwater-surface water management, saltwater intrusion, and water resources economics. He received a B.A. in Economics from the University of Rochester, and an M.S. and Ph.D. in Hydrogeology from Stanford University. He also served as a Research Fellow at the Harvard School of Public Health.
Science and Products
Filter Total Items: 26
Assessment of regional management strategies for controlling seawater intrusion Assessment of regional management strategies for controlling seawater intrusion
Simulation-optimization methods, applied with adequate sensitivity tests, can provide useful quantitative guidance for controlling seawater intrusion. This is demonstrated in an application to the West Coast Basin of coastal Los Angeles that considers two management options for improving hydraulic control of seawater intrusion: increased injection into barrier wells and in lieu delivery...
Authors
E.G. Reichard, T.A. Johnson
Ground-water quality of coastal aquifer systems in the West Coast Basin, Los Angeles County, California, 1999-2002 Ground-water quality of coastal aquifer systems in the West Coast Basin, Los Angeles County, California, 1999-2002
The extensive use of ground water throughout the Central and West Coast Basins of Los Angeles County during the first half of the 20th century resulted in declining water levels, widespread seawater intrusion, and deterioration of water quality along most reaches of the coast. In order to control seawater intrusion in the West Coast Basin, freshwater is injected into a series of wells at...
Authors
Michael Land, Eric G. Reichard, Steven M. Crawford, Rhett R. Everett, Mark W. Newhouse, Colin F. Williams
Evaluation of tracer tests completed in 1999 and 2000 on the upper Santa Clara River, Los Angeles and Ventura Counties, California Evaluation of tracer tests completed in 1999 and 2000 on the upper Santa Clara River, Los Angeles and Ventura Counties, California
The interaction of surface water and hyporheic water along the Santa Clara River in Los Angeles and Ventura Counties, California, was evaluated by conducting tracer tests and analyzing water-quality data under different flow conditions in October 1999 and May 2000. Tracer and water-quality samples were collected at multiple river and hyporheic sites as well as at the Los Angeles County...
Authors
Marisa H. Cox, Gregory O. Mendez, Charles R. Kratzer, Eric G. Reichard
Geohydrology, geochemistry, and ground-water simulation-optimization of the Central and West Coast Basins, Los Angeles County, California Geohydrology, geochemistry, and ground-water simulation-optimization of the Central and West Coast Basins, Los Angeles County, California
Historical ground-water development of the Central and West Coast Basins in Los Angeles County, California through the first half of the 20th century caused large water-level declines and induced seawater intrusion. Because of this, the basins were adjudicated and numerous ground-water management activities were implemented, including increased water spreading, construction of injection...
Authors
Eric G. Reichard, Michael Land, Steven M. Crawford, Tyler D. Johnson, Rhett R. Everett, Trayle V. Kulshan, Daniel J. Ponti, Keith L. Halford, Theodore A. Johnson, Katherine S. Paybins, Tracy Nishikawa
Probing the Los Angeles Basin; insights into ground-water resources and earthquake hazards Probing the Los Angeles Basin; insights into ground-water resources and earthquake hazards
No abstract available.
Authors
John W. Hillhouse, E.G. Reichard, D.J. Ponti, James W. Hendley, Peter H. Stauffer
U.S. drinking water challenges in the twenty-first century U.S. drinking water challenges in the twenty-first century
The access of almost all 270 million U.S. residents to reliable, safe drinking water distinguishes the United States in the twentieth century from that of the nineteenth century. The United States is a relatively water-abundant country with moderate population growth; nonetheless, current trends are sufficient to strain water resources over time, especially on a regional basis. We have...
Authors
Ronnie B. Levin, Paul R. Epstein, Tim E. Ford, Winston Harrington, Erik R. Olson, Eric G. Reichard
Evaluation of surface-water/ground-water interactions in the Santa Clara River Valley, Ventura County, California Evaluation of surface-water/ground-water interactions in the Santa Clara River Valley, Ventura County, California
The interactions of surface water and ground water along the Santa Clara River in Ventura County, California, were evaluated by analyzing river-discharge and water-quality data and geohydrologic information collected by the U.S. Geological Survey between 1993 and 1995 for the Piru, Fillmore, and Santa Paula subbasins. Measurements of discharge and water quality were made at multiple...
Authors
Eric George Reichard, Steven M. Crawford, Katherine S. Paybins, Peter Martin, Michael Land, Tracy Nishikawa
Numerical model of a tracer test on the Santa Clara River, Ventura County, California Numerical model of a tracer test on the Santa Clara River, Ventura County, California
To better understand the flow processes, solute-transport processes, and ground-water/surface-water interactions on the Santa Clara River in Ventura County, California, a 24-hour fluorescent-dye tracer study was performed under steady-state flow conditions on a 45-km reach of the river. The study reach includes perennial (uppermost and lowermost) subreaches and ephemeral subreaches of...
Authors
Tracy Nishikawa, Katherine S. Paybins, John A. Izbicki, Eric G. Reichard
Management of groundwater supply and water quality in the Los Angeles Basin, California Management of groundwater supply and water quality in the Los Angeles Basin, California
Water use and water needs in the coastal Los Angeles Basin in California have been very closely tied to the development of the region during the last 150 years. The first water wells were drilled in the mid-1800s. Currently about 40% of the water supply (9.4 m3 s-1) in the region is provided by groundwater. Other sources of water supply include reclaimed water and surface water imported...
Authors
E.G. Reichard, S.M. Crawford, M.T. Land, K.S. Paybins
Statistical analysis and mathematical modeling of a tracer test on the Santa Clara River, Ventura County, California Statistical analysis and mathematical modeling of a tracer test on the Santa Clara River, Ventura County, California
To better understand flow processes, solute-transport processes, and ground-water/surface-water interactions on the Santa Clara River in Ventura County, California, a 24-hour fluorescent-dye tracer study was performed under steady-state flow conditions on a 28-mile reach of the river. The study reach includes perennial (uppermost and lowermost) subreaches and ephemeral subreaches of the...
Authors
Katherine S. Paybins, Tracy Nishikawa, John A. Izbicki, Eric G. Reichard
Seawater intrusion in aquifers underlying the oxnard plain, Ventura County, California Seawater intrusion in aquifers underlying the oxnard plain, Ventura County, California
[No abstract available]
Authors
John A. Izbicki, Eric G. Reichard, Tracy Nishikawa, Peter Martin
Implications of uncertainty in exposure assessment for groundwater contamination Implications of uncertainty in exposure assessment for groundwater contamination
Decision-making on regulation, mitigation, and treatment of drinking water contamination depends, in part, on estimates of human exposure. Assessment of past, present and potential future exposure levels requires quantitative characterization of the contaminant sources, the transport of contaminants and the level of actual human exposure to the contaminated water. Failure to consider the
Authors
Eric G. Reichard, John A. Izbicki, Peter Martin
Non-USGS Publications**
Konikow, L.F., Reichard, E.G. and King, M.J. (2023), John D. Bredehoeft (1933-2023)—A Geologist at the Frontiers of Hydrogeology. Groundwater, 61: 446-451. https://doi.org/10.1111/gwat.13313
**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: 26
Assessment of regional management strategies for controlling seawater intrusion Assessment of regional management strategies for controlling seawater intrusion
Simulation-optimization methods, applied with adequate sensitivity tests, can provide useful quantitative guidance for controlling seawater intrusion. This is demonstrated in an application to the West Coast Basin of coastal Los Angeles that considers two management options for improving hydraulic control of seawater intrusion: increased injection into barrier wells and in lieu delivery...
Authors
E.G. Reichard, T.A. Johnson
Ground-water quality of coastal aquifer systems in the West Coast Basin, Los Angeles County, California, 1999-2002 Ground-water quality of coastal aquifer systems in the West Coast Basin, Los Angeles County, California, 1999-2002
The extensive use of ground water throughout the Central and West Coast Basins of Los Angeles County during the first half of the 20th century resulted in declining water levels, widespread seawater intrusion, and deterioration of water quality along most reaches of the coast. In order to control seawater intrusion in the West Coast Basin, freshwater is injected into a series of wells at...
Authors
Michael Land, Eric G. Reichard, Steven M. Crawford, Rhett R. Everett, Mark W. Newhouse, Colin F. Williams
Evaluation of tracer tests completed in 1999 and 2000 on the upper Santa Clara River, Los Angeles and Ventura Counties, California Evaluation of tracer tests completed in 1999 and 2000 on the upper Santa Clara River, Los Angeles and Ventura Counties, California
The interaction of surface water and hyporheic water along the Santa Clara River in Los Angeles and Ventura Counties, California, was evaluated by conducting tracer tests and analyzing water-quality data under different flow conditions in October 1999 and May 2000. Tracer and water-quality samples were collected at multiple river and hyporheic sites as well as at the Los Angeles County...
Authors
Marisa H. Cox, Gregory O. Mendez, Charles R. Kratzer, Eric G. Reichard
Geohydrology, geochemistry, and ground-water simulation-optimization of the Central and West Coast Basins, Los Angeles County, California Geohydrology, geochemistry, and ground-water simulation-optimization of the Central and West Coast Basins, Los Angeles County, California
Historical ground-water development of the Central and West Coast Basins in Los Angeles County, California through the first half of the 20th century caused large water-level declines and induced seawater intrusion. Because of this, the basins were adjudicated and numerous ground-water management activities were implemented, including increased water spreading, construction of injection...
Authors
Eric G. Reichard, Michael Land, Steven M. Crawford, Tyler D. Johnson, Rhett R. Everett, Trayle V. Kulshan, Daniel J. Ponti, Keith L. Halford, Theodore A. Johnson, Katherine S. Paybins, Tracy Nishikawa
Probing the Los Angeles Basin; insights into ground-water resources and earthquake hazards Probing the Los Angeles Basin; insights into ground-water resources and earthquake hazards
No abstract available.
Authors
John W. Hillhouse, E.G. Reichard, D.J. Ponti, James W. Hendley, Peter H. Stauffer
U.S. drinking water challenges in the twenty-first century U.S. drinking water challenges in the twenty-first century
The access of almost all 270 million U.S. residents to reliable, safe drinking water distinguishes the United States in the twentieth century from that of the nineteenth century. The United States is a relatively water-abundant country with moderate population growth; nonetheless, current trends are sufficient to strain water resources over time, especially on a regional basis. We have...
Authors
Ronnie B. Levin, Paul R. Epstein, Tim E. Ford, Winston Harrington, Erik R. Olson, Eric G. Reichard
Evaluation of surface-water/ground-water interactions in the Santa Clara River Valley, Ventura County, California Evaluation of surface-water/ground-water interactions in the Santa Clara River Valley, Ventura County, California
The interactions of surface water and ground water along the Santa Clara River in Ventura County, California, were evaluated by analyzing river-discharge and water-quality data and geohydrologic information collected by the U.S. Geological Survey between 1993 and 1995 for the Piru, Fillmore, and Santa Paula subbasins. Measurements of discharge and water quality were made at multiple...
Authors
Eric George Reichard, Steven M. Crawford, Katherine S. Paybins, Peter Martin, Michael Land, Tracy Nishikawa
Numerical model of a tracer test on the Santa Clara River, Ventura County, California Numerical model of a tracer test on the Santa Clara River, Ventura County, California
To better understand the flow processes, solute-transport processes, and ground-water/surface-water interactions on the Santa Clara River in Ventura County, California, a 24-hour fluorescent-dye tracer study was performed under steady-state flow conditions on a 45-km reach of the river. The study reach includes perennial (uppermost and lowermost) subreaches and ephemeral subreaches of...
Authors
Tracy Nishikawa, Katherine S. Paybins, John A. Izbicki, Eric G. Reichard
Management of groundwater supply and water quality in the Los Angeles Basin, California Management of groundwater supply and water quality in the Los Angeles Basin, California
Water use and water needs in the coastal Los Angeles Basin in California have been very closely tied to the development of the region during the last 150 years. The first water wells were drilled in the mid-1800s. Currently about 40% of the water supply (9.4 m3 s-1) in the region is provided by groundwater. Other sources of water supply include reclaimed water and surface water imported...
Authors
E.G. Reichard, S.M. Crawford, M.T. Land, K.S. Paybins
Statistical analysis and mathematical modeling of a tracer test on the Santa Clara River, Ventura County, California Statistical analysis and mathematical modeling of a tracer test on the Santa Clara River, Ventura County, California
To better understand flow processes, solute-transport processes, and ground-water/surface-water interactions on the Santa Clara River in Ventura County, California, a 24-hour fluorescent-dye tracer study was performed under steady-state flow conditions on a 28-mile reach of the river. The study reach includes perennial (uppermost and lowermost) subreaches and ephemeral subreaches of the...
Authors
Katherine S. Paybins, Tracy Nishikawa, John A. Izbicki, Eric G. Reichard
Seawater intrusion in aquifers underlying the oxnard plain, Ventura County, California Seawater intrusion in aquifers underlying the oxnard plain, Ventura County, California
[No abstract available]
Authors
John A. Izbicki, Eric G. Reichard, Tracy Nishikawa, Peter Martin
Implications of uncertainty in exposure assessment for groundwater contamination Implications of uncertainty in exposure assessment for groundwater contamination
Decision-making on regulation, mitigation, and treatment of drinking water contamination depends, in part, on estimates of human exposure. Assessment of past, present and potential future exposure levels requires quantitative characterization of the contaminant sources, the transport of contaminants and the level of actual human exposure to the contaminated water. Failure to consider the
Authors
Eric G. Reichard, John A. Izbicki, Peter Martin
Non-USGS Publications**
Konikow, L.F., Reichard, E.G. and King, M.J. (2023), John D. Bredehoeft (1933-2023)—A Geologist at the Frontiers of Hydrogeology. Groundwater, 61: 446-451. https://doi.org/10.1111/gwat.13313
**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.