Sacramento Valley – South Yuba

Statistics

Basin Notes

2003Bulletin 118 basin description

2014: CASGEM prioritization: medium.

2016: Boundary modified with North American 5-021.64 subbasin

2018Draft Basin Prioritization – high. Comments: 1) CASGEM/WDL/GWIDS: Stable hydrographs. Source: DWR 2) Began using surface water in 1981 to mitigate previous declining groundwater levels; gwls have now recovered. Partly in response to this water table decline, the YCWA began to provide Yuba River water to Brophy Water District and South Yuba Water District in 1983. Monitoring indicates groundwater levels have recovered since the early 1980s. Currently both the Yuba North Subbasin and the Yuba South Subbasin are in good health. Source: Yuba County Water Supply Assessment, Magnolia Ranch DEIR, 2015 Priority set high because of inter-basin water transfers. Groundwater-related transfer  “Type A” in which local groundwater is pumped to compensate for diverted surface water. 2019: Basin boundary modification. Per DWR: “The first portion of the basin boundary modification is an external scientific revision to the eastern boundary of the North Yuba subbasin. The boundary utilizes a qualified map and follows geologic contacts of alluvial deposits and consolidated rocks of the Sierra Nevada. The second portion of the modification consists of two internal jurisdictional revisions. This first modifies the boundary between the South Yuba, North American, and Sutter subbasins to align with the Yuba County line and include Dry Creek Mutual Water Company’s jurisdictional boundary within the South Yuba subbasin. The second modifies the boundary between the North Yuba and Wyandotte Creek subbasins to follow and include the jurisdictional boundary of the Ramirez Water District within the North Yuba subbasin.” Draft phase 2 priority: high. December 27,

2019: December 27 – Yuba Water Agency published its Groundwater Sustainability Plan

2020: January 30 – GSP submitted to DWR

2021: November 18 — GSP approved by DWR

At-A-Glance

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

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Remedial Investigation Report for Former Titan 1-A Missile Facility, Lincoln, California

U.S. Army Corps of Engineers (USACE) | February 12th, 2025

Previous investigations have identified groundwater and soil vapor as the primary environmental matrices that have been impacted by the release and volatile organic compo

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Quality of groundwater used for domestic supply in the eastern Sacramento Valley and adjacent foothills, California

U.S. Geological Survey (USGS) | November 1st, 2024

More than 2 million Californians rely on groundwater from privately owned domestic wells for drinking-water supply. This report summarizes a water-quality survey of domes

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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

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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

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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

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Statement of Findings regarding the Approval of the South Yuba Subbasin Groundwater Sustainability Plan

California Department of Water Resources (DWR) | November 18th, 2021

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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. 

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Status and Understanding of Groundwater Quality in the Northern Sierra Nevada Foothills Domestic-Supply Aquifer Study Units, 2015–17: California GAMA Priority Basin Project

U.S. Geological Survey (USGS) | May 25th, 2021

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

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

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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

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Yuba Subbasins Water Management Plan: A Groundwater Sustainability Plan

Yuba Water Agency | December 27th, 2019

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A hybrid machine learning model to predict and visualize nitrate concentration throughout the Central Valley aquifer, California, USA

Science of the Total Environment (Elsevier) | June 9th, 2017

Intense demand for water in the Central Valley of California and related increases in groundwater nitrate concentration threaten the sustainability of the groundwater res

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Beale Air Force Base Environmental Cleanup Program Issue 67

U.S. Air Force | October 31st, 2015

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Hydrology, Hydraulics, and Water Management Technical Report

U.S. Bureau of Reclamation (USBR) | December 15th, 2014

This Technical Report describes pertinent hydrologic and hydraulic condition and water management operations for Shasta Lake, the Sacramento River, the Delta, and the CVP

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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

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Ground-water conditions at Beale Air Force Base and vicinity, California

U.S. Geological Survey (USGS) | April 15th, 1980

The U.S. Geological Survey was asked by the Air Force to make a study of ground-water conditions at the base. This report and an earlier data report have resulted

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