Ground-water resources of the Marine Corps Base, Twentynine Palms, San Bernardino County, California

U.S. Geological Survey (USGS) | January 2nd, 1978

Ground-water resources of the Yucca Valley-Joshua Tree area, San Bernardino County, California

U.S. Geological Survey (USGS) | July 18th, 1972

Ground-water storage depletion in Pahrump Valley, Nevada-California, 1962-1975

U.S. Geological Survey (USGS) | July 1st, 1982

Groundwater and Urban Growth in the San Joaquin Valley

Public Policy Institute of California (PPIC) | September 20th, 2021

The San Joaquin Valley is ground zero for the Sustainable Groundwater Management Act (SGMA). It has the largest groundwater deficit in California and faces some of the

The San Joaquin Valley is ground zero for the Sustainable Groundwater Management Act (SGMA). It has the largest groundwater deficit in California and faces some of the worst impacts from overdraft, including land subsidence and drying wells. SGMA will help the region address these issues—while also building its climate resilience. But this will require hard work, not only by farmers—the largest groundwater users—but also by the valley’s urban water utilities, which serve a growing population while relying mostly on groundwater. As the valley confronts limits on groundwater pumping, urban utilities, local land use authorities, other water users, and state agencies must all engage to ensure a smooth transition for the region’s residents.

Groundwater Availability within the Salton Sea Basin

Lawrence Livermore National Laboratory (LLNL) | January 29th, 2008

Groundwater Conditions Report Water Year 2021

California Department of Water Resources (DWR) | March 15th, 2022

Groundwater Depletion in the United States (1900-2008)

U.S. Geological Survey (USGS) | June 1st, 2013

A natural consequence of groundwater withdrawals is the removal of water from subsurface storage, but the overall rates and magnitude of groundwater depletion in the Unit

A natural consequence of groundwater withdrawals is the removal of water from subsurface storage, but the overall rates and magnitude of groundwater depletion in the United States are not well characterized. This study evaluates long-term cumulative depletion volumes in 40 separate aquifers or areas and one land use category in the United States, bringing together information from the literature and from new analyses. Depletion is directly calculated using calibrated groundwater models, analytical approaches, or volumetric budget analyses for multiple aquifer systems. Estimated groundwater depletion in the United States during 1900–2008 totals approximately 1,000 cubic kilometers (km3). Furthermore, the rate of groundwater depletion has increased markedly since about 1950, with maximum rates occurring during the most recent period (2000–2008) when the depletion rate averaged almost 25 km3 per year (compared to 9.2 km3 per year averaged over the 1900–2008 time-frame). 

Groundwater Discharge by Evapotranspiration, Dixie Valley, West-Central Nevada, March 2009–September 2011

U.S. Geological Survey (USGS) | April 30th, 2015

Groundwater Sustainability Plan for the Northern and Central Delta-Mendota Regions

San Luis & Delta-Mendota Water Authority (SLDMWA) | November 30th, 2019

Table of Contents Executive Summary Introduction Plan Area Governance and Administration Outreach and Communication Basin Setting Sustainable M

Table of Contents Executive Summary Introduction Plan Area Governance and Administration Outreach and Communication Basin Setting Sustainable Management Criteria Sustainability Implementation Plan Implementation Technical Studies Appendices A. Coordination Agreements B. Common Chapter C. Outreach Documentation D. Water Budget Model Documentation E. Hydrographs for Sustainable Management Criteria F. Quality Assurance Program G. Noticing and Adoption Implementation H. Elements Guide

Groundwater Sustainability Plan for the San Joaquin River Exchange Contractors GSP Group in the Delta-Mendota Subbasin (5-022.07)

San Joaquin River Exchange Contractors Water Authority (SJRECWA) | June 30th, 2022

The GSP was adopted by the SJREC GSA on December 13, 2019. The GSP has been amended in response to the January 21, 2022 DWR Determination letter to Delta-Mendota Subbasin

The GSP was adopted by the SJREC GSA on December 13, 2019. The GSP has been amended in response to the January 21, 2022 DWR Determination letter to Delta-Mendota Subbasin’s Point of Contact that included evaluation of the San Joaquin River GSA’s Groundwater Sustainability Plan (GSP). The amended plan was adopted by the SJRECGSA Board on July 5, 2022. On March 2nd, 2023, the Department of Water Resources announced decisions for Groundwater Sustainability Plans (GSPs), finding that numerous subbasins were found to be inadequate. One of these subbasins—the Delta-Mendota Subbasin in San Joaquin, Stanislaus, Merced, Fresno, Madera, and San Benito counties—includes a region for which the Exchange Contractors are responsible for developing the GSP. Due to size, this file has been divided. Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8