Sacramento Valley – Antelope

Statistics

Basin Notes

2003Bulletin 118 basin description

2014: Basin prioritization – medium. Comment: Nitrate issue in domestic wells. GW Use based on B118-03 and 2003 Tehama Co GW Inventory data.

2018: Basin draft priority – high. Comment: 1) CASGEM/WDL/GWIDS: Longterm hydrographs show groundwater level decline. Source: DWR 2) Basin priority changed from Medium to High.

2022: January 31 — Groundwater Sustainability Plan (GSP) submitted to the Department of Water Resources (DWR)

2023: October 26 — GSP deemed incomplete by DWR. GSA given 180 days to correct deficiencies.

December 11 — Addressing Groundwater Overdraft in the Sacramento Valley, Public Policy Institute of California

2025: GSP approved by DWR

At-A-Glance

Source: CA DWR
Source: CA DWR

California Water Library Documents About This Basin

Assessing Causes and Consequences of Winter Surface Water Dynamics in California's Central Valley Using Satellite Remote Sensing

Wiley Online Library | June 3rd, 2025

California's Central Valley is increasingly vulnerable to winter floods. A comprehensive spatial baseline of flood extents is critical for inundation analyses that can en

View Document Download

Statement of Findings regarding the Approval of the Sacramento Valley – Antelope Subbasin 2024 Groundwater Sustainability Plan

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

View Document Download

Groundwater sustainability and land subsidence in California’s Central Valley

Water (MDPI) | April 22nd, 2024

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 groundw

View Document Download

Statement of Findings regarding the Determination of Incomplete Status of the Sacramento Valley Basin -- Antelope Subbasin Groundwater Sustainability Plan

California Department of Water Resources (DWR) | October 26th, 2023

View Document Download

Thousands of domestic and public supply wells face failure despite groundwater sustainability reform in California’s Central Valley

Nature Portfolio (Springer Nature) | September 8th, 2023

View Document Download

Subsurface water flux in California's Central Valley and its source watershed from space geodesy

American Geophysical Union (AGU) | September 29th, 2022

We combine measurements from Global Positioning System positioning and Gravity Recovery and Climate Experiment gravity to infer change in water components in Central Vall

View Document Download

Groundwater Sustainability Plan Antelope Subbasin

Tehama County Flood Control and Water Conservation District | January 31st, 2022

For the full 4,074-page file, go to the Tehama County Flood Control and Water Conservation District or the California Department of Water Resources (DWR).

View Document Download

Critical Aquifer Overdraft Accelerates Degradation of Groundwater Quality in California's Central Valley During Drought

American Geophysical Union (AGU) | September 1st, 2021

It has been established that wells are at risk to run dry when groundwater levels decline during drought, but associated impacts to water quality are poorly understood. 

View Document Download

Multiscale Assessment of Agricultural Consumptive Water Use in California's Central Valley

American Geophysical Union (AGU) | May 4th, 2021

View Document Download

Groundwater development leads to decreasing arsenic concentrations in the San Joaquin Valley, California

Science of the Total Environment (Elsevier) | January 18th, 2021

In the San Joaquin Valley (SJV), California, about 10% of drinking water wells since 2010 had arsenic concentrations above the U.S. maximum contaminant level of 10μg/L.

View Document Download

Groundwater quality in the Redding–Red Bluff shallow aquifer study unit of the northern Sacramento Valley, California

U.S. Geological Survey (USGS) | April 23rd, 2020

 This study was designed to provide a statistically representative assessment of the quality of groundwater resources used for domestic drinking water in the Redding–

View Document Download

Domestic well vulnerability to drought duration and unsustainable groundwater management in California's Central Valley

Environmental Research Letters (IOP) | March 18th, 2020

Millions of Californians access drinking water via domestic wells, which are vulnerable to drought and unsustainable groundwater management. Groundwater overdraft and th

View Document Download

Geochemistry of Ground Water in the Sacramento Valley, California

U.S. Geological Survey (USGS) | July 13th, 1984

A geochemical investigation was done to evaluate temporal changes in water quality and to determine the processes that control water chemistry in shallow ground water of

View Document Download

GSA Information