East Kaweah Groundwater Sustainability Agency 2024 Second Amended Groundwater Sustainability Plan

East Kaweah Groundwater Sustainability Agency (EKGSA) | November 29th, 2024

Following submittal of an initial notification in 2017, EKGSA began development of the initial Groundwater Sustainability Plan (GSP) to comply with SGMA’s statutory and

Following submittal of an initial notification in 2017, EKGSA began development of the initial Groundwater Sustainability Plan (GSP) to comply with SGMA’s statutory and regulatory requirements and initiated planning by engaging with stakeholders and holding public meetings. Since, the GSA had adopted a revised 1st Amended GSP in 2022 and this 2nd Amended GSP in 2024 to address comments and plan deficiencies identified by the Department of Water Resources and State Water Resources Control Board. This GSP includes greater protections for the most vulnerable beneficial users, uses and property interests through revised sustainable management criteria (SMC), coordinated methodology between GSAs and surrounding Subbasins, consistency between different sustainability indicators’ SMC and a clarified sustainability path with predictive modeling to evidence the feasibility and likelihood that the Kaweah Subbasin will eliminate overdraft (achieve sustainability) by 2040. Due to size, this file has been divided. Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8, Part 9, Part 10, Part 11, Part 12, Part 13, Part 14, Part 15

East Kaweah GSA Groundwater Sustainability Plan

East Kaweah Groundwater Sustainability Agency (EKGSA) | February 17th, 2019

Final GSP delivered to the Department of Water Resources 1/31/20 per DWR; final online draft awaiting uploading per inquiry to EKGSA 2/13/20

Final GSP delivered to the Department of Water Resources 1/31/20 per DWR; final online draft awaiting uploading per inquiry to EKGSA 2/13/20

Eastern San Joaquin Groundwater Subbasin Groundwater Sustainability Plan

Eastern San Joaquin Groundwater Authority (ESJGA) | November 1st, 2019

In 2014, the California legislature enacted the Sustainable Groundwater Management Act (SGMA) in response to continued overdraft of California’s groundwater resources

In 2014, the California legislature enacted the Sustainable Groundwater Management Act (SGMA) in response to continued overdraft of California’s groundwater resources. The Eastern San Joaquin Groundwater Subbasin (Eastern San Joaquin Subbasin, or Subbasin) is one of 21 basins and subbasins identified by the California Department of Water Resources (DWR) as being in a state of critical overdraft. SGMA requires preparation of a Groundwater Sustainability Plan (GSP) to address measures necessary to attain sustainable conditions in the Subbasin. Within the framework of SGMA, sustainability is generally defined as long-term reliability of the groundwater supply and the absence of undesirable results. The Eastern San Joaquin Groundwater Authority (ESJGWA) was formed in 2017 in response to SGMA. A Joint Exercise of Powers Agreement establishes the ESJGWA, which is composed of 16 Groundwater Sustainability Agencies (GSAs): Central Delta Water Agency (CDWA), Central San Joaquin Water Conservation District (CSJWCD), City of Lodi, City of Manteca, City of Stockton, Eastside San Joaquin GSA (Eastside GSA) (composed of Calaveras County Water District [CCWD], Stanislaus County, and Rock Creek Water District), Linden County Water District (LCWD), Lockeford Community Services District (LCSD), North San Joaquin Water Conservation District (NSJWCD), Oakdale Irrigation District (OID), San Joaquin County No. 1, San Joaquin County No. 2 (with participation from California Water Service Company Stockton District [Cal Water]), South Delta Water Agency (SDWA), South San Joaquin GSA (composed of South San Joaquin Irrigation District [SSJID] including Woodward Reservoir, City of Ripon, and City of Escalon), Stockton East Water District (SEWD), and Woodbridge Irrigation District (WID). The ESJGWA is governed by a 16-member Board of Directors (ESJGWA Board), with one representative from each GSA. The Board is guided by an Advisory Committee, also with one representative from each GSA, that is tasked with making recommendations to the ESJGWA Board on technical and substantive matters. SGMA requires development of a GSP that achieves groundwater sustainability in the Subbasin by 2040. The GSP outlines the need to reduce overdraft conditions and has identified 23 projects for potential development that either replace groundwater use (offset) or supplement groundwater supplies (recharge) to meet current and future water demands. Although current analysis indicates that groundwater pumping offsets and/or recharge on the order of 78,000 acre-feet per year (AF/year) may be required to achieve sustainability, additional efforts are needed to confirm the level of pumping offsets and/or recharge required to achieve sustainability. These efforts include collecting additional data and a review of the Subbasin groundwater model, along with other efforts as outlined in the GSP. A Public Draft GSP was prepared and made available for public review and comment on July 10, 2019 for a period of 45 days ending on August 25, 2019. The ESJGWA received numerous comments from the public, reviewed and prepared responses to comments, and revised the Draft GSP. This Final GSP includes those edits and revisions. Comment letters and responses are included as appendices to the GSP.

Eastern San Joaquin Groundwater Subbasin Groundwater Sustainability Plan (Revised)

Eastern San Joaquin Groundwater Authority (ESJGA) | June 15th, 2022

In 2014, the California legislature enacted the Sustainable Groundwater Management Act (SGMA) in response to continued overdraft of California’s groundwater resources.

In 2014, the California legislature enacted the Sustainable Groundwater Management Act (SGMA) in response to continued overdraft of California’s groundwater resources. The Eastern San Joaquin Groundwater Subbasin (Eastern San Joaquin Subbasin, or Subbasin) is one of 21 basins and subbasins identified by the California Department of Water Resources (DWR) as being in a state of critical overdraft. SGMA requires preparation of a Groundwater Sustainability Plan (GSP) to address measures necessary to attain sustainable conditions in the Subbasin. Within the framework of SGMA, sustainability is generally defined as long-term reliability of the groundwater supply and the absence of undesirable results. The Eastern San Joaquin Groundwater Authority (ESJGWA) was formed in 2017 in response to SGMA. A Joint Exercise of Powers Agreement establishes the ESJGWA, which is composed of 16 Groundwater Sustainability Agencies (GSAs): Central Delta Water Agency (CDWA), Central San Joaquin Water Conservation District (CSJWCD), City of Lodi, City of Manteca, City of Stockton, Eastside San Joaquin GSA (Eastside GSA) (composed of Calaveras County Water District [CCWD], Stanislaus County, and Rock Creek Water District), Linden County Water District (LCWD), Lockeford Community Services District (LCSD), North San Joaquin Water Conservation District (NSJWCD), Oakdale Irrigation District (OID), San Joaquin County No. 1, San Joaquin County No. 2 (with participation from California Water Service Company Stockton District [Cal Water]), South Delta Water Agency (SDWA), South San Joaquin GSA (composed of South San Joaquin Irrigation District [SSJID] including Woodward Reservoir, City of Ripon, and City of Escalon), Stockton East Water District (SEWD), and Woodbridge Irrigation District (WID). The ESJGWA is governed by a 16-member Board of Directors (ESJGWA Board), with one representative from each GSA. The Board is guided by an Advisory Committee, also with one representative from each GSA, that is tasked with making recommendations to the ESJGWA Board on technical and substantive matters. SGMA requires development of a GSP that achieves groundwater sustainability in the Subbasin by 2040. The GSP outlines the need to reduce overdraft conditions and has identified 23 projects for potential development that either replace groundwater use (offset) or supplement groundwater supplies (recharge) to meet current and future water demands. Although current analysis indicates that groundwater pumping offsets and/or recharge on the order of 37,000 acre-feet per year (AF/year) may be required to achieve sustainability, additional efforts are needed to confirm the level of pumping offsets and/or recharge required to achieve sustainability. These efforts include collecting additional data and a review of the Subbasin groundwater model, along with other efforts as outlined in the GSP. A Public Draft GSP was prepared and made available for public review and comment on July 10, 2019 for a period of 45 days ending on August 25, 2019. The ESJGWA received numerous comments from the public, reviewed and prepared responses to comments, and revised the Draft GSP. This Final GSP includes those edits and revisions. Comment letters and responses are included as appendices to the GSP. On November 18, 2021, the ESJGWA received a Consultation Initiation Letter (Letter) from DWR. The Letter identified two potential deficiencies in the Subbasin GSPs which may preclude DWR’s approval, as well as potential corrective actions to address each potential deficiency. The Letter initiated consultation between DWR, the Plan Manager, the ESJGWA, and the Subbasin’s GSAs. In response to DWR’s comments, this GSP was revised in June 2022. DWR comments have also been addressed in a series of four technical memoranda appended to this revised GSP and referenced throughout the document. Due to size, this file has been divided into eight parts. Part 1,  Part 2,  Part 3,  Part 4,  Part 5,  Part 6,  Part 7,  Part 8

Eastern Tule Groundwater Sustainability Agency Tule Subbasin Groundwater Sustainability Plan

Eastern Tule Groundwater Sustainability Agency (ETGSA) | January 17th, 2020

Eastern Tule Groundwater Sustainability Agency Tule Subbasin Groundwater Sustainability Plan (Revised)

Eastern Tule Groundwater Sustainability Agency (ETGSA) | July 12th, 2022

This Plan addresses the items identified in the SGMA regulations specific to the ETGSA, including descriptions of the physical characteristics, the ETGSA water budget (h

This Plan addresses the items identified in the SGMA regulations specific to the ETGSA, including descriptions of the physical characteristics, the ETGSA water budget (historic and future), specific monitoring features and locations, quantifiable measurable objectives, interim milestones and minimum thresholds for the applicable sustainable management criteria including depth to groundwater, groundwater storage, groundwater quality, and land subsidence between 2020 and 2040, and those projects and management actions proposed to implement during the 20 year planning horizon to achieve the Sustainability Goal. These projects and management actions will be critical to the success of the Plan, which initially focus the ETGSA to implement an accounting system to track and monitor groundwater data to help inform and develop policies to adaptively manage to reduce groundwater overdraft while minimizing impacts to agriculture production and economic impacts to the local communities. Due to size, this file has been divided. Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7, Part 8

Eastside Aquifer Subbasin Groundwater Sustainability Plan

Salinas Valley Basin Groundwater Sustainability Agency | January 13th, 2022

The 2014 California Sustainable Groundwater Management Act (SGMA) requires that medium- and high-priority groundwater basins and subbasins develop Groundwater Sustainabil

The 2014 California Sustainable Groundwater Management Act (SGMA) requires that medium- and high-priority groundwater basins and subbasins develop Groundwater Sustainability Plans (GSPs) that outline how groundwater sustainably will be achieved in 20 years, and then maintained for an additional 30 years. This GSP fulfills that requirement for the Salinas Valley—Eastside Aquifer Subbasin (Subbasin), which is designated by the DWR as a medium priority groundwater subbasin. Plan approved by DWR 4/27/23.

Eel River Groundwater Sustainability Plan

Humboldt County Groundwater Sustainability Agency | January 29th, 2022

In 2015, Humboldt County received a planning grant from DWR for technical studies and planning which led to the submission in December 2016 of a Groundwater Sustainabili

In 2015, Humboldt County received a planning grant from DWR for technical studies and planning which led to the submission in December 2016 of a Groundwater Sustainability Plan (GSP) Alternative, a streamlined version of a GSP. The GSP Alternative was disapproved by DWR in 2019 primarily because objective management criteria had not been established for 10 years; a quantitative estimate of sustainable yield was not developed; and the GSP Alternative did not quantify the impacts of groundwater use on surface water systems and determine at what point they are significant and unreasonable. As a result of the GSP Alternative being disapproved, formation of a Groundwater Sustainability Agency (GSA) was required and development of a full GSP was required by January 31, 2022. This is that document. Due to file size, this document has been divided into sections. Part 1, Part 2, Part 3, Part 4, Part 5 Click here for the Eel River Valley GSP page at the California Department of Water Resources

Elsinore Valley Subbasin Groundwater Sustainability Plan

Elsinore Valley Municipal Water District | December 23rd, 2021

The Elsinore Valley Subbasin is located within the service area of Elsinore Valley Municipal Water District (EVMWD or District). No other agencies overlap the boundaries

The Elsinore Valley Subbasin is located within the service area of Elsinore Valley Municipal Water District (EVMWD or District). No other agencies overlap the boundaries of this subbasin therefore no inter-agency coordination was required for the development of this GSP. Two outside technical experts participated as the technical advisory committee for the GSP development. EVMWD conducted public outreach throughout the development of the GSP.

Enhancing Water Supply through Invasive Plant Removal: A Literature Review of Evapotranspiration Studies on Arundo Donax

Nature Conservancy | February 11th, 2019

Removal of the invasive, non-native plant Arundo donax (Arundo, giant reed) along riparian corridors is being considered by groundwater sustainability agencies

Removal of the invasive, non-native plant Arundo donax (Arundo, giant reed) along riparian corridors is being considered by groundwater sustainability agencies as a potential water savings strategy that could provide co-benefits for groundwater sustainability as well as native ecosystem restoration. Arundo is a fast growing, densely vegetated reed that has purportedly high-water consumption (i.e., transpiration). This paper is intended to help agencies develop estimates of the water supply benefits that could be realized from Arundo removal.