Jonathan Traum
Jonathan Traum - California Water Science Center
Science and Products
Central Valley Hydrologic Model version 2 (CVHM2): Decision support tool for groundwater and land subsidence management Central Valley Hydrologic Model version 2 (CVHM2): Decision support tool for groundwater and land subsidence management
The San Joaquin Valley (SJV) of California is one of the world’s most productive agricultural regions. Reliance on groundwater has led to some of the greatest rates of human-induced land subsidence in the world in the 20th century, as well as more recently. The United States Geological Survey (USGS) has recently developed an integrated surface–subsurface hydrologic model, the Central...
Authors
Kirk Nelson, Nigel Quinn, Jonathan Traum
Groundwater sustainability and land subsidence in California’s Central Valley Groundwater sustainability and land subsidence in California’s Central Valley
The Central Valley of California is one of the most prolific agricultural regions in the world. Agriculture is reliant on the conjunctive use of surface-water and groundwater. The lack of available surface-water and land-use changes have led to pumping-induced groundwater-level and storage declines, land subsidence, changes to streamflow and the environment, and the degradation of water...
Authors
Claudia C. Faunt, Jonathan Traum, Scott Boyce, Whitney Seymour, Elizabeth Jachens, Justin Brandt, Michelle Sneed, Sandra Bond, Marina Marcelli
Models: Tools for estimating and predicting subsidence Models: Tools for estimating and predicting subsidence
No abstract available.
Authors
Vivek Bedekar, Tyler Hatch, Jonathan Traum, Gus Tolley, Abhishek Singh, Claudia C. Faunt
Klamath natural flow study, Upper Klamath Basin groundwater flow model Klamath natural flow study, Upper Klamath Basin groundwater flow model
The purpose of the Upper Klamath Basin Groundwater Flow Model (UKBGFM) is to simulate groundwater conditions in the Upper Klamath Basin under historical and predevelopment conditions. The UKBGFM quantifies estimates of and changes in groundwater levels, storage, pumping, drainage flow to tile drains, evapotranspiration, and flow between the Upper Klamath Basin and neighboring basins. The...
Authors
Jonathan Traum, Scott Boyce
Hydrologic and geochemical characterization of the Petaluma River watershed, Sonoma County, California Hydrologic and geochemical characterization of the Petaluma River watershed, Sonoma County, California
Executive SummaryThe objectives of the study are to (1) develop an updated assessment of the hydrogeology and geochemistry of the Petaluma valley watershed (PVW) and (2) develop an integrated hydrologic model for the PVW. The purpose of this report is to describe the conceptual model of the hydrologic, hydrogeologic, and water-quality characteristics of the PVW and a numerical...
Authors
Jonathan Traum, Nicholas Teague, Donald Sweetkind, Tracy Nishikawa
A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA
Intense demand for water in the Central Valley of California and related increases in groundwater nitrate concentration threaten the sustainability of the groundwater resource. To assess contamination risk in the region, we developed a hybrid, non-linear, machine learning model within a statistical learning framework to predict nitrate contamination of groundwater to depths of...
Authors
Katherine Ransom, Bernard Nolan, Jonathan Traum, Claudia C. Faunt, Andrew Bell, Jo Gronberg, David Wheeler, Celia Zamora, Bryant Jurgens, Gregory E. Schwarz, Kenneth Belitz, Sandra Eberts, George Kourakos, Thomas Harter
Water availability and land subsidence in the Central Valley, California, USA Water availability and land subsidence in the Central Valley, California, USA
The Central Valley in California (USA) covers about 52,000 km2 and is one of the most productive agricultural regions in the world. This agriculture relies heavily on surface-water diversions and groundwater pumpage to meet irrigation water demand. Because the valley is semi-arid and surface-water availability varies substantially, agriculture relies heavily on local groundwater. In the...
Authors
Claudia C. Faunt, Michelle Sneed, Jonathan Traum, Justin Brandt
Water availability and subsidence in California's Central Valley Water availability and subsidence in California's Central Valley
The Central Valley in California (USA) covers about 52,000 km2 and is one of the most productive agricultural regions in the world. This agriculture relies heavily on surface-water diversions and groundwater pumpage to meet irrigation water demand. Because the valley is semi-arid and surface-water availability varies substantially, agriculture relies heavily on local groundwater. In the...
Authors
Claudia Faunt, Michelle Sneed, Jonathan Traum, Justin Brandt
Hydrologic model of the Modesto Region, California, 1960-2004 Hydrologic model of the Modesto Region, California, 1960-2004
Strategies for managing water supplies and groundwater quality in the Modesto region of the eastern San Joaquin Valley, California, are being formulated and evaluated by the Stanislaus and Tuolumne Rivers Groundwater Basin Association. Management issues and goals in the basin include an area in the lower part of the basin that requires drainage of the shallow water table to sustain...
Authors
Steven Phillips, Diane Rewis, Jonathan Traum
Examples of deformation-dependent flow simulations of conjunctive use with MF-OWHM Examples of deformation-dependent flow simulations of conjunctive use with MF-OWHM
The dependency of surface- and groundwater flows and aquifer hydraulic properties on deformation induced by changes in aquifer head is not accounted for in the standard version of MODFLOW. A new USGS integrated hydrologic model, MODFLOW-OWHM, incorporates this dependency by linking subsidence and mesh deformation with changes in aquifer transmissivity and storage coefficient, and with...
Authors
Randall Hanson, Jonathan Traum, Scott Boyce, Wolfgang Schmid, Joseph Hughes
Documentation of a groundwater flow model (SJRRPGW) for the San Joaquin River Restoration Program study area, California Documentation of a groundwater flow model (SJRRPGW) for the San Joaquin River Restoration Program study area, California
To better understand the potential effects of restoration flows on existing drainage problems, anticipated as a result of the San Joaquin River Restoration Program (SJRRP), the U.S. Geological Survey (USGS), in cooperation with the U.S. Bureau of Reclamation (Reclamation), developed a groundwater flow model (SJRRPGW) of the SJRRP study area that is within 5 miles of the San Joaquin River...
Authors
Jonathan Traum, Steven Phillips, George Bennett, Celia Zamora, Loren Metzger
Groundwater Modeling Comparison Groundwater Modeling Comparison
The Central Valley has four hydrologic regions, from north to south: the Sacramento Valley, the Delta & Eastside Streams, the San Joaquin Basin, and the Tulare Basin. Water flows from Sacramento Valley, Tulare Basin, and the San Joaquin Basin, into the Delta & Eastside Streams through the Central Valley's only natural outlet, the Carquinez Strait, on its way to the Pacific Ocean.
Central Valley Hydrologic Model Version 2 Central Valley Hydrologic Model Version 2
The Central Valley Hydrologic Model version 2 (CVHM2) is an integrated surface–subsurface hydrologic model, representing the major components of the hydrologic system of California’s Central Valley. This new decision support tool is useful for testing water management strategies in California's Central Valley.
Science and Products
Central Valley Hydrologic Model version 2 (CVHM2): Decision support tool for groundwater and land subsidence management Central Valley Hydrologic Model version 2 (CVHM2): Decision support tool for groundwater and land subsidence management
The San Joaquin Valley (SJV) of California is one of the world’s most productive agricultural regions. Reliance on groundwater has led to some of the greatest rates of human-induced land subsidence in the world in the 20th century, as well as more recently. The United States Geological Survey (USGS) has recently developed an integrated surface–subsurface hydrologic model, the Central...
Authors
Kirk Nelson, Nigel Quinn, Jonathan Traum
Groundwater sustainability and land subsidence in California’s Central Valley Groundwater sustainability and land subsidence in California’s Central Valley
The Central Valley of California is one of the most prolific agricultural regions in the world. Agriculture is reliant on the conjunctive use of surface-water and groundwater. The lack of available surface-water and land-use changes have led to pumping-induced groundwater-level and storage declines, land subsidence, changes to streamflow and the environment, and the degradation of water...
Authors
Claudia C. Faunt, Jonathan Traum, Scott Boyce, Whitney Seymour, Elizabeth Jachens, Justin Brandt, Michelle Sneed, Sandra Bond, Marina Marcelli
Models: Tools for estimating and predicting subsidence Models: Tools for estimating and predicting subsidence
No abstract available.
Authors
Vivek Bedekar, Tyler Hatch, Jonathan Traum, Gus Tolley, Abhishek Singh, Claudia C. Faunt
Klamath natural flow study, Upper Klamath Basin groundwater flow model Klamath natural flow study, Upper Klamath Basin groundwater flow model
The purpose of the Upper Klamath Basin Groundwater Flow Model (UKBGFM) is to simulate groundwater conditions in the Upper Klamath Basin under historical and predevelopment conditions. The UKBGFM quantifies estimates of and changes in groundwater levels, storage, pumping, drainage flow to tile drains, evapotranspiration, and flow between the Upper Klamath Basin and neighboring basins. The...
Authors
Jonathan Traum, Scott Boyce
Hydrologic and geochemical characterization of the Petaluma River watershed, Sonoma County, California Hydrologic and geochemical characterization of the Petaluma River watershed, Sonoma County, California
Executive SummaryThe objectives of the study are to (1) develop an updated assessment of the hydrogeology and geochemistry of the Petaluma valley watershed (PVW) and (2) develop an integrated hydrologic model for the PVW. The purpose of this report is to describe the conceptual model of the hydrologic, hydrogeologic, and water-quality characteristics of the PVW and a numerical...
Authors
Jonathan Traum, Nicholas Teague, Donald Sweetkind, Tracy Nishikawa
A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA
Intense demand for water in the Central Valley of California and related increases in groundwater nitrate concentration threaten the sustainability of the groundwater resource. To assess contamination risk in the region, we developed a hybrid, non-linear, machine learning model within a statistical learning framework to predict nitrate contamination of groundwater to depths of...
Authors
Katherine Ransom, Bernard Nolan, Jonathan Traum, Claudia C. Faunt, Andrew Bell, Jo Gronberg, David Wheeler, Celia Zamora, Bryant Jurgens, Gregory E. Schwarz, Kenneth Belitz, Sandra Eberts, George Kourakos, Thomas Harter
Water availability and land subsidence in the Central Valley, California, USA Water availability and land subsidence in the Central Valley, California, USA
The Central Valley in California (USA) covers about 52,000 km2 and is one of the most productive agricultural regions in the world. This agriculture relies heavily on surface-water diversions and groundwater pumpage to meet irrigation water demand. Because the valley is semi-arid and surface-water availability varies substantially, agriculture relies heavily on local groundwater. In the...
Authors
Claudia C. Faunt, Michelle Sneed, Jonathan Traum, Justin Brandt
Water availability and subsidence in California's Central Valley Water availability and subsidence in California's Central Valley
The Central Valley in California (USA) covers about 52,000 km2 and is one of the most productive agricultural regions in the world. This agriculture relies heavily on surface-water diversions and groundwater pumpage to meet irrigation water demand. Because the valley is semi-arid and surface-water availability varies substantially, agriculture relies heavily on local groundwater. In the...
Authors
Claudia Faunt, Michelle Sneed, Jonathan Traum, Justin Brandt
Hydrologic model of the Modesto Region, California, 1960-2004 Hydrologic model of the Modesto Region, California, 1960-2004
Strategies for managing water supplies and groundwater quality in the Modesto region of the eastern San Joaquin Valley, California, are being formulated and evaluated by the Stanislaus and Tuolumne Rivers Groundwater Basin Association. Management issues and goals in the basin include an area in the lower part of the basin that requires drainage of the shallow water table to sustain...
Authors
Steven Phillips, Diane Rewis, Jonathan Traum
Examples of deformation-dependent flow simulations of conjunctive use with MF-OWHM Examples of deformation-dependent flow simulations of conjunctive use with MF-OWHM
The dependency of surface- and groundwater flows and aquifer hydraulic properties on deformation induced by changes in aquifer head is not accounted for in the standard version of MODFLOW. A new USGS integrated hydrologic model, MODFLOW-OWHM, incorporates this dependency by linking subsidence and mesh deformation with changes in aquifer transmissivity and storage coefficient, and with...
Authors
Randall Hanson, Jonathan Traum, Scott Boyce, Wolfgang Schmid, Joseph Hughes
Documentation of a groundwater flow model (SJRRPGW) for the San Joaquin River Restoration Program study area, California Documentation of a groundwater flow model (SJRRPGW) for the San Joaquin River Restoration Program study area, California
To better understand the potential effects of restoration flows on existing drainage problems, anticipated as a result of the San Joaquin River Restoration Program (SJRRP), the U.S. Geological Survey (USGS), in cooperation with the U.S. Bureau of Reclamation (Reclamation), developed a groundwater flow model (SJRRPGW) of the SJRRP study area that is within 5 miles of the San Joaquin River...
Authors
Jonathan Traum, Steven Phillips, George Bennett, Celia Zamora, Loren Metzger
Groundwater Modeling Comparison Groundwater Modeling Comparison
The Central Valley has four hydrologic regions, from north to south: the Sacramento Valley, the Delta & Eastside Streams, the San Joaquin Basin, and the Tulare Basin. Water flows from Sacramento Valley, Tulare Basin, and the San Joaquin Basin, into the Delta & Eastside Streams through the Central Valley's only natural outlet, the Carquinez Strait, on its way to the Pacific Ocean.
Central Valley Hydrologic Model Version 2 Central Valley Hydrologic Model Version 2
The Central Valley Hydrologic Model version 2 (CVHM2) is an integrated surface–subsurface hydrologic model, representing the major components of the hydrologic system of California’s Central Valley. This new decision support tool is useful for testing water management strategies in California's Central Valley.