Bulletin No. 39, South Coastal Basin Investigation, Records of Ground Water Levels at Wells

California Department of Water Resources (DWR) | December 1st, 1932

Bulletin No. 52-B Salinas Basin Investigation Summary Report

California Department of Water Resources (DWR) | December 13th, 1946

The Board of Supervisors and the Flood Control and Water Conservation Conmittee of the County of Monterey became concerned in April 1944 over the intrusion of saline wate

The Board of Supervisors and the Flood Control and Water Conservation Conmittee of the County of Monterey became concerned in April 1944 over the intrusion of saline water in the ground water supply utilized for irrigation, domestic and industrial purposes in the lower reaches of the Salinas Basin near Monterey Bay. The entire agricultural and urban development in the basin depends on an adequate supply of ground water of good quality. There had been some abandonment of wells in the Salinas Basin near the bay shore due to excessive salinity as early as 1938. Accelerated encroachment of the contamination occurred in 1943, and the matter was brought to public attention in 1944. The County of Monterey and the Department of Public Works, State of California, executed a contract on July 10, 1944, providing for maintenance in cooperation an investigation of the water resources of the Salinas Valley in Monterey County and conditions relative thereto which obtain in the valley or affect the water supplies available therefor. It further provides that the Department shall prepare a report based on the investigation setting forth the physical facts pertinent to water supply and to salt water Intrusion, and if possible, incorporate findings as to a method or methods of solving the problems involved.

Bulletin No. 6 Sutter-Yuba Counties Investigation

California State Water Resources Control Board (SWRCB) | August 27th, 1952

Bulletin No. 81 Intrusion of Salt Water into Ground Water Basins of Southern Alameda County

California Department of Water Resources (DWR) | December 31st, 1960

Bulletin No. 84 Mojave River Ground Water Basins Investigation

California Department of Water Resources (DWR) | August 15th, 1967

Click here for Bulletin No. 84 maps and plates.

Click here for Bulletin No. 84 maps and plates.

Butte Subbasin Groundwater Sustainability Plan

Publisher not available | December 1st, 2021

The Butte Subbasin is identified by California Department of Water Resources (DWR) as a medium priority basin. Therefore, the Butte Subbasin GSAs must develop, adopt, and

The Butte Subbasin is identified by California Department of Water Resources (DWR) as a medium priority basin. Therefore, the Butte Subbasin GSAs must develop, adopt, and submit a GSP (or GSPs) to DWR for the entire Butte Subbasin by January 31, 2022. The Butte Subbasin is managed by eleven GSAs, which are working together under a Subbasin Cooperation Agreement1 to develop one GSP for the entire Subbasin. This Butte Subbasin GSP satisfies the requirements established by SGMA and DWR, and outlines the strategy by which the Butte Subbasin GSAs will maintain sustainable groundwater management through the implementation period until 2042.

California Code of Regulations: Sustainable Groundwater Management Act Basin Boundary Regulations

California Department of Water Resources (DWR) | October 7th, 2015

These regulations specify the information a local agency is required to provide when requesting that the Department revise the boundaries of a basin or subbasin, includin

These regulations specify the information a local agency is required to provide when requesting that the Department revise the boundaries of a basin or subbasin, including the establishment of new subbasins, and the methodology and criteria used by the Department to evaluate a modification to existing basin or subbasin boundaries.

California Code of Regulations: Title 23. Waters Division 2. Department of Water Resources Chapter 1.5. Groundwater Management Subchapter 2. Groundwater Sustainability Plans

California Department of Water Resources (DWR) | May 17th, 2016

ARTICLE 1. Introductory Provisions § 350. Authority and Purpose These regulations specify the components of groundwater sustainability plans, alternatives

ARTICLE 1. Introductory Provisions § 350. Authority and Purpose These regulations specify the components of groundwater sustainability plans, alternatives to groundwater sustainability plans, and coordination agreements prepared pursuant to the Sustainable Groundwater Management Act (Part 2.74 of Division 6 of the Water Code, beginning with Section 10720), and the methods and criteria used by the Department to evaluate those plans, alternatives, and coordination agreements, and information required by the Department to facilitate that evaluation. Note: Authority cited: Section 10733.2, Water Code. Reference: Sections 10733.2 and 10733.4, Water Code.

California Groundwater Ambient Monitoring and Assessment (GAMA) Program Priority Basin Project: Domestic-Supply Assessment

U.S. Geological Survey (USGS) | March 14th, 2024

California Groundwater Conditions Update – Spring 2019

California Department of Water Resources (DWR) | October 3rd, 2022

DWR has completed an evaluation of state-wide groundwater level data reported in spring 2019 for California groundwater basins. Spring data correspond to the time period

DWR has completed an evaluation of state-wide groundwater level data reported in spring 2019 for California groundwater basins. Spring data correspond to the time period immediately before the typical irrigation season begins in a region. This helps show groundwater levels before summer crop irrigation and other uses. In Central and Northern California, the pre-irrigation season is in March, while in Southern California, that season is typically earlier. The Spring 2019 Groundwater Level Data Coverage map (Figure 1) shows a comparison between total spring 2019 reporting and typical reporting in previous years. Typical reporting includes wells with water level data submitted to DWR over the past five spring seasons (2015-2019) by CASGEM Monitoring Entities, other local agencies, and well owners. Although the reporting percentage is high and coverage is good, there are still gaps in spring 2019 coverage throughout the state, including portions of Tulare, Kern, San Bernardino, Riverside, and Imperial counties.