Claudia C. Faunt
Claudia Faunt serves as the Program Chief for the Groundwater Availability and Use Section at the USGS California Water Science Center in San Diego, California.
As a USGS hydrologist, she has led studies that focused on regional groundwater flow systems, including the Central Valley of California. Her research has specialized in water availability, regional integrated hydrologic modeling, and hydrogeologic framework modeling. Claudia has been a hydrologist for the U.S. Geological Survey since 1988 and a part of the California Water Science Center since 1998. She received her Doctorate in Geological Engineering in 1994 from the Colorado School of Mines. In one of her most memorable moments, Claudia was interviewed by the news television program, 60 Minutes, to discuss groundwater resources. She also was named the Groundwater Resources Association of California’s (GRA) David Keith Todd Distinguished Lecturer for 2017; a lecture series dedicated to fostering interest and excellence in applied groundwater science and technology.
Other Publications
- Tiedeman, C.R., Hill, M.C., D'Agnese, F.A., and Faunt, C.C., 2001, Using ground-water model predictions to guide hydrogeologic data collection: MODFLOW-2001 and other modeling odysseys Conference Proceedings, eds. H.S. Seo, E. Poeter, C. Zheng, and O. Poeter, p. 195-201.
Science and Products
Filter Total Items: 67
A new ghost-node method for linking different models and initial investigations of heterogeneity and nonmatching grids
A flexible, robust method for linking parent (regional-scale) and child (local-scale) grids of locally refined models that use different numerical methods is developed based on a new, iterative ghost-node method. Tests are presented for two-dimensional and three-dimensional pumped systems that are homogeneous or that have simple heterogeneity. The parent and child grids are simulated using the blo
Authors
J.E. Dickinson, S.C. James, S. Mehl, M. C. Hill, S. A. Leake, G.A. Zyvoloski, C.C. Faunt, A.-A. Eddebbarh
Ground-water modeling of the Death Valley Region, Nevada and California
The Death Valley regional ground-water flow system (DVRFS) of southern Nevada and eastern California covers an area of about 100,000 square kilometers and contains very complex geology and hydrology. Using a computer model to represent the complex system, the U.S. Geological Survey simulated ground-water flow in the Death Valley region for use with U.S. Department of Energy projects in southern Ne
Authors
W.R. Belcher, C.C. Faunt, D. S. Sweetkind, J.B. Blainey, C. A. San Juan, R. J. Laczniak, M. C. Hill
Hydrogeologic framework refinement, ground-water flow and storage, water-chemistry analyses, and water-budget components of the Yuma area, southwestern Arizona and southeastern California
The ground-water and surface-water system in the Yuma area in southwestern Arizona and southeastern California is managed intensely to meet water-delivery requirements of customers in the United States, to manage high ground-water levels in the valleys, and to maintain treaty-mandated water-quality and quantity requirements of Mexico. The following components in this report, which were identified
Authors
Jesse E. Dickinson, Michael Land, Claudia C. Faunt, S. A. Leake, Eric G. Reichard, John B. Fleming, D. R. Pool
Physical and hydrochemical evidence of lake leakage near Jim Woodruff Lock and Dam and of ground-water inflow to Lake Seminole, and an assessment of karst features in and near the lake, southwestern Georgia and northwestern Florida
Hydrogeologic data and water-chemistry analyses indicate that Lake Seminole leaks into the Upper Floridan aquifer near Jim Woodruff Lock and Dam, southwestern Georgia and northwestern Florida, and that ground water enters Lake Seminole along upstream reaches of the lake’s four impoundment arms (Chattahoochee and Flint Rivers, Spring Creek, and Fishpond Drain). Written accounts by U.S. Army Corps o
Authors
Lynn J. Torak, Dianna M. Crilley, Jaime A. Painter
A guide for using the transient ground-water flow model of the Death Valley regional ground-water flow system, Nevada and California
This report is a guide for executing numerical simulations with the transient ground-water flow model of the Death Valley regional ground-water flow system, Nevada and California using the U.S. Geological Survey modular finite-difference ground-water flow model, MODFLOW-2000. Model inputs, including observations of hydraulic head, discharge, and boundary flows, are summarized. Modification of the
Authors
Joan B. Blainey, Claudia C. Faunt, Mary C. Hill
Occurrence and distribution of mercury in the surficial aquifer, Long Neck Peninsula, Sussex County, Delaware, 2003–04
In January 2001, mercury (Hg) was detected (500 nanograms per liter, ng/L, or greater) in the distribution system of the Long Neck Water Company (LNWC), Pot Nets, Delaware. By April 2001, two LNWC production wells had been taken off-line because discharge concentrations of total mercury (HgT) either had exceeded or approached the Federal limit of 2,000 ng/L. From October 2003 through January 2005,
Authors
Michael T. Koterba, A. Scott Andres, Joseph Vrabel, Dianna M. Crilley, Zoltan Szabo, John F. DeWild, George R. Aiken, Betzaida Reyes-Padro
Documentation of the Santa Clara Valley regional ground-water/surface-water flow model, Santa Clara Valley, California
The Santa Clara Valley is a long, narrow trough extending about 35 miles southeast from the southern end of San Francisco Bay where the regional alluvial-aquifer system has been a major source of water. Intensive agricultural and urban development throughout the 20th century and related ground-water development resulted in ground-water-level declines of more than 200 feet and land subsidence of as
Authors
R. T. Hanson, Zhen Li, C.C. Faunt
Modeling the Death Valley regional ground-water flow system
The development of a regional ground-water flow model of the Death Valley region in the southwestern United States is discussed in the context of the fourteen guidelines of Hill. This application of the guidelines demonstrates how they may be used for model calibration and evaluation, and to direct further model development and data collection.
Authors
F. A. D'Agnese, C.C. Faunt, M. C. Hill
Methods for using groundwater model predictions to guide hydrogeologic data collection, with application to the Death Valley regional groundwater flow system
Calibrated models of groundwater systems can provide substantial information for guiding data collection. This work considers using such models to guide hydrogeologic data collection for improving model predictions by identifying model parameters that are most important to the predictions. Identification of these important parameters can help guide collection of field data about parameter values a
Authors
C. R. Tiedeman, M. C. Hill, F. A. D'Agnese, C.C. Faunt
The site-scale saturated zone flow model for Yucca Mountain: Calibration of different conceptual models and their impact on flow paths
This paper presents several different conceptual models of the Large Hydraulic Gradient (LHG) region north of Yucca Mountain and describes the impact of those models on groundwater flow near the potential high-level repository site. The results are based on a numerical model of site-scale saturated zone beneath Yucca Mountain. This model is used for performance assessment predictions of radionucli
Authors
G. Zyvoloski, E. Kwicklis, A.-A. Eddebbarh, B. Arnold, C. Faunt, B.A. Robinson
The saturated zone at Yucca Mountain: An overview of the characterization and assessment of the saturated zone as a barrier to potential radionuclide migration
The US Department of Energy is pursuing Yucca Mountain, Nevada, for the development of a geologic repository for the disposal of spent nuclear fuel and high-level radioactive waste, if the repository is able to meet applicable radiation protection standards established by the US Nuclear Regulatory Commission and the US Environmental Protection Agency (EPA). Effective performance of such a reposito
Authors
A.-A. Eddebbarh, G.A. Zyvoloski, B.A. Robinson, E. M. Kwicklis, P.W. Reimus, B.W. Arnold, T. Corbet, S.P. Kuzio, C. Faunt
A three-dimensional numerical model of predevelopment conditions in the Death Valley regional ground-water flow system, Nevada and California
In the early 1990's, two numerical models of the Death Valley regional ground-water flow system were developed by the U.S. Department of Energy. In general, the two models were based on the same basic hydrogeologic data set. In 1998, the U.S. Department of Energy requested that the U.S. Geological Survey develop and maintain a ground-water flow model of the Death Valley region in support of U.S. D
Authors
Frank A. D'Agnese, G. M. O'Brien, C.C. Faunt, W.R. Belcher, C. San Juan
Science and Products
Filter Total Items: 67
A new ghost-node method for linking different models and initial investigations of heterogeneity and nonmatching grids
A flexible, robust method for linking parent (regional-scale) and child (local-scale) grids of locally refined models that use different numerical methods is developed based on a new, iterative ghost-node method. Tests are presented for two-dimensional and three-dimensional pumped systems that are homogeneous or that have simple heterogeneity. The parent and child grids are simulated using the blo
Authors
J.E. Dickinson, S.C. James, S. Mehl, M. C. Hill, S. A. Leake, G.A. Zyvoloski, C.C. Faunt, A.-A. Eddebbarh
Ground-water modeling of the Death Valley Region, Nevada and California
The Death Valley regional ground-water flow system (DVRFS) of southern Nevada and eastern California covers an area of about 100,000 square kilometers and contains very complex geology and hydrology. Using a computer model to represent the complex system, the U.S. Geological Survey simulated ground-water flow in the Death Valley region for use with U.S. Department of Energy projects in southern Ne
Authors
W.R. Belcher, C.C. Faunt, D. S. Sweetkind, J.B. Blainey, C. A. San Juan, R. J. Laczniak, M. C. Hill
Hydrogeologic framework refinement, ground-water flow and storage, water-chemistry analyses, and water-budget components of the Yuma area, southwestern Arizona and southeastern California
The ground-water and surface-water system in the Yuma area in southwestern Arizona and southeastern California is managed intensely to meet water-delivery requirements of customers in the United States, to manage high ground-water levels in the valleys, and to maintain treaty-mandated water-quality and quantity requirements of Mexico. The following components in this report, which were identified
Authors
Jesse E. Dickinson, Michael Land, Claudia C. Faunt, S. A. Leake, Eric G. Reichard, John B. Fleming, D. R. Pool
Physical and hydrochemical evidence of lake leakage near Jim Woodruff Lock and Dam and of ground-water inflow to Lake Seminole, and an assessment of karst features in and near the lake, southwestern Georgia and northwestern Florida
Hydrogeologic data and water-chemistry analyses indicate that Lake Seminole leaks into the Upper Floridan aquifer near Jim Woodruff Lock and Dam, southwestern Georgia and northwestern Florida, and that ground water enters Lake Seminole along upstream reaches of the lake’s four impoundment arms (Chattahoochee and Flint Rivers, Spring Creek, and Fishpond Drain). Written accounts by U.S. Army Corps o
Authors
Lynn J. Torak, Dianna M. Crilley, Jaime A. Painter
A guide for using the transient ground-water flow model of the Death Valley regional ground-water flow system, Nevada and California
This report is a guide for executing numerical simulations with the transient ground-water flow model of the Death Valley regional ground-water flow system, Nevada and California using the U.S. Geological Survey modular finite-difference ground-water flow model, MODFLOW-2000. Model inputs, including observations of hydraulic head, discharge, and boundary flows, are summarized. Modification of the
Authors
Joan B. Blainey, Claudia C. Faunt, Mary C. Hill
Occurrence and distribution of mercury in the surficial aquifer, Long Neck Peninsula, Sussex County, Delaware, 2003–04
In January 2001, mercury (Hg) was detected (500 nanograms per liter, ng/L, or greater) in the distribution system of the Long Neck Water Company (LNWC), Pot Nets, Delaware. By April 2001, two LNWC production wells had been taken off-line because discharge concentrations of total mercury (HgT) either had exceeded or approached the Federal limit of 2,000 ng/L. From October 2003 through January 2005,
Authors
Michael T. Koterba, A. Scott Andres, Joseph Vrabel, Dianna M. Crilley, Zoltan Szabo, John F. DeWild, George R. Aiken, Betzaida Reyes-Padro
Documentation of the Santa Clara Valley regional ground-water/surface-water flow model, Santa Clara Valley, California
The Santa Clara Valley is a long, narrow trough extending about 35 miles southeast from the southern end of San Francisco Bay where the regional alluvial-aquifer system has been a major source of water. Intensive agricultural and urban development throughout the 20th century and related ground-water development resulted in ground-water-level declines of more than 200 feet and land subsidence of as
Authors
R. T. Hanson, Zhen Li, C.C. Faunt
Modeling the Death Valley regional ground-water flow system
The development of a regional ground-water flow model of the Death Valley region in the southwestern United States is discussed in the context of the fourteen guidelines of Hill. This application of the guidelines demonstrates how they may be used for model calibration and evaluation, and to direct further model development and data collection.
Authors
F. A. D'Agnese, C.C. Faunt, M. C. Hill
Methods for using groundwater model predictions to guide hydrogeologic data collection, with application to the Death Valley regional groundwater flow system
Calibrated models of groundwater systems can provide substantial information for guiding data collection. This work considers using such models to guide hydrogeologic data collection for improving model predictions by identifying model parameters that are most important to the predictions. Identification of these important parameters can help guide collection of field data about parameter values a
Authors
C. R. Tiedeman, M. C. Hill, F. A. D'Agnese, C.C. Faunt
The site-scale saturated zone flow model for Yucca Mountain: Calibration of different conceptual models and their impact on flow paths
This paper presents several different conceptual models of the Large Hydraulic Gradient (LHG) region north of Yucca Mountain and describes the impact of those models on groundwater flow near the potential high-level repository site. The results are based on a numerical model of site-scale saturated zone beneath Yucca Mountain. This model is used for performance assessment predictions of radionucli
Authors
G. Zyvoloski, E. Kwicklis, A.-A. Eddebbarh, B. Arnold, C. Faunt, B.A. Robinson
The saturated zone at Yucca Mountain: An overview of the characterization and assessment of the saturated zone as a barrier to potential radionuclide migration
The US Department of Energy is pursuing Yucca Mountain, Nevada, for the development of a geologic repository for the disposal of spent nuclear fuel and high-level radioactive waste, if the repository is able to meet applicable radiation protection standards established by the US Nuclear Regulatory Commission and the US Environmental Protection Agency (EPA). Effective performance of such a reposito
Authors
A.-A. Eddebbarh, G.A. Zyvoloski, B.A. Robinson, E. M. Kwicklis, P.W. Reimus, B.W. Arnold, T. Corbet, S.P. Kuzio, C. Faunt
A three-dimensional numerical model of predevelopment conditions in the Death Valley regional ground-water flow system, Nevada and California
In the early 1990's, two numerical models of the Death Valley regional ground-water flow system were developed by the U.S. Department of Energy. In general, the two models were based on the same basic hydrogeologic data set. In 1998, the U.S. Department of Energy requested that the U.S. Geological Survey develop and maintain a ground-water flow model of the Death Valley region in support of U.S. D
Authors
Frank A. D'Agnese, G. M. O'Brien, C.C. Faunt, W.R. Belcher, C. San Juan