San Joaquin Valley – Pleasant Valley

Statistics

Basin Notes

2003: Bulletin 118 basin description

2014: CASGEM basin prioritization – Low

2016: Basin boundary modification with subbasin Kern County 5-022.14 approved  Basin boundary modification with Westside 5-022.09 approved 

Revised basin  boundary description

2018: Draft basin priority – medium. Declining groundwater and subsidence comments:

  • 1) CASGEM/WDL/GWIDS: Longterm hydrographs show groundwater level decline. Source: DWR 2) Basin Boundary modification request reports overdraft conditions as submitted by local managers. ” Most of these hydrographs indicate water-level declines through the early 1990s, then relatively stable levels from the early 1990s to about 2005. After 2005, water levels in many wells began to decline again. Water-level declines after 2005 in most wells ranged from about five to ten feet per year. Hydrographs in report appendix show long-term GWL decline.” Source: Technical Report on Hydrogeologic Conditions in Pleasant Valley Sub-Basin, March, 2016, Kenneth D. Schmidt and Associates Groundwater Quality Consultants for the Pleasant Valley Water District Coalinga, California downloadable at CA DWR SGMA Portal.
  • Sources: 1) Current Land Subsidence in the San Joaquin Valley, USGS; 2) 2014 – Land Subsidence from Groundwater Use in California, California Water Foundation / James W. Borchers / Michael Carpenter, Luhdorff & Salmanini, April 2014; 3) Progress Report: Subsidence in the Central Valley, California, Jet Propulsion Laboratory, California Institute of Technology, NASA 2015-16

Final Basin Prioritization: Medium.

2022: GSP submitted to DWR

2024: January 18 – DWR deemed GSP incomplete

July 16 – Revised GSP submitted to DWR

July 18 – DWR opens public comment until 9/16

At-A-Glance

Source: CA DWR
Source: CA DWR

California Water Library Documents About This Basin

Statement of Findings Regarding the Determination of Inadequate Status of the San Joaquin Valley – Pleasant Valley Subbasin 2024 Groundwater Sustainability Plan

California Department of Water Resources (DWR) | February 27th, 2025

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Replenishing Groundwater in the San Joaquin Valley: 2024 Update

Public Policy Institute of California (PPIC) | June 6th, 2024

Strategies to replenish groundwater basins—long used in some areas of the San Joaquin Valley—have increasingly come into focus as the region seeks to bring its overd

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Statement of Findings regarding the Determination of Incomplete Status of the San Joaquin Valley – Pleasant Valley Subbasin Groundwater Sustainability Plan

California Department of Water Resources (DWR) | January 18th, 2024

The Department of Water Resources (Department) is required to evaluate whether a submitted groundwater sustainability plan (GSP or Plan) conforms to specific requirements

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Modeling the dynamic penetration depth of post-1950s water in unconfined aquifers using environmental tracers: Central Valley, California

Journal of Hydrology (Elsevier) | December 5th, 2022

The penetration depth of post-1950s recharge (D-1950) in aquifers is a marker that is frequently used to identify groundwater that is susceptible to anthropogenic contami

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Pleasant Valley Groundwater Sustainability Plan

Pleasant Valley Groundwater Sustainability Agency | February 22nd, 2022

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Modesto Subbasin Groundwater Sustainability Plan

Stanislaus and Tuolumne Rivers Groundwater Basin Association (STRGBA) | January 31st, 2022

This Groundwater Sustainability Plan (GSP) covers the entire Modesto Subbasin (5-22.02), designated a high-priority basin by the Department of Water Resources (DWR). The

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Drought impacts to water footprints and virtual water transfers of the Central Valley of California

American Geophysical Union (AGU) | June 23rd, 2017

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Land subsidence in the San Joaquin Valley, California, USA, 2007–2014

Copernicus Publications | November 12th, 2015

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GSA Information