Upper Santa Ana Valley – Temescal

Statistics

Basin Notes

2003: Bulletin 118 basin description

2014: CASGEM basin prioritization – medium. Comment: Groundwater quality impaired by nitrates and inorganics in some wells (B‐118).

2016: Basin boundary modification with Elsinore 8-004, which partitioned the Elsinore Basin in two basins and aligned the boundaries.

2018: Draft basin priority – Medium

Fnal basin priority:  Medium.

2022: January 27 – GSP submitted to DWR

2024: January 18 – GSP approved by DWR

 

At-A-Glance

Source: CA DWR
Source: CA DWR

California Water Library Documents About This Basin

Statement of Findings regarding the Approval of the Upper Santa Ana Valley - Temescal 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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Temescal Basin Groundwater Sustainability Plan

Temescal Basin Groundwater Sustainability Agency | January 27th, 2022

Wishing to provide a framework for cooperative groundwater management and SGMA compliance, the City of Corona (Corona), City of Norco (Norco), and the Home Gardens Coun

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Bulletin No. 39-W, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel and Santa Ana River Basins and Antelope Valley and Water Supply Summary for Southern Portion of California 1954

California Department of Water Resources (DWR) | June 1st, 1956

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Bulletin No. 39-U, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel, and Santa Ana River Basins and Antelope Valley and Water Supply Summary for Southern Portion of California 1952

California Department of Water Resources (DWR) | August 1st, 1955

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Bulletin No. 39-V, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel, and Santa Ana River Basins and Antelope Valley and Water Supply Summary for Southern Portion of California 1953

California Department of Water Resources (DWR) | August 1st, 1955

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Bulletin No. 39-T, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel, and Santa Ana River Basins and Antelope Valley, Water Supply Summary for Southern Portion of California 1951

California Department of Water Resources (DWR) | June 1st, 1955

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Bulletin No. 39-S, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los angeles, San Gabriel, and Santa Ana River Basins and Antelope Valley and Water Supply Summary for Southern Portion of California 1950

California Department of Water Resources (DWR) | April 1st, 1955

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Bulletin No. 39-R, Southern California Area Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel, and Santa Ana River Basins and Antelope Valley

California Department of Water Resources (DWR) | July 1st, 1954

 

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Bulletin No. 39-Q, South Coastal Basin Investigation, Ground Water Levels and Precipitation Records in Los Angeles, San Gabriel and Santa Ana River Basins and Antelope Valley and Water Supply Summary for Southern Portion of California 1948

California Department of Water Resources (DWR) | July 1st, 1953

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Bulletin No. 39-B, South Coastal Basin Investigation, Records of Ground Water Levels at Wells for the Year 1933, Precipitation Records for the Season 1932-33

California Department of Water Resources (DWR) | January 1st, 1934

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Wells of Southern California

Scientific American | March 22nd, 1902

In the Series of Water Supply Irrigation Papers, the United States Geological Survey has in press, but not yet published, the “Wells of Southern California" (Nos. 59

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GSA Information