East Turlock Subbasin Groundwater Sustainability Agency (ETSGSA)
ETSGSA Logo: Add updated logo (file provided separately) above or to the left of the header – wherever it looks best!
Who We Are
The East Turlock Subbasin Groundwater Sustainability Agency (ETSGSA) is the local agency responsible for implementing the Sustainable Groundwater Management Act (SGMA) in the eastern portion of the Turlock Subbasin.
We are dedicated to the sustainable management of groundwater resources and our goal is to ensure the long-term availability of groundwater for our community.
East Turlock Subbasin GSA consists of five agencies:
Ballico-Cortez Water District
Eastside Water District
Merced County
Merced Irrigation District
Stanislaus County
Current Information
Groundwater Use Fee Deposit Invoices
2025 Groundwater Use Fee Deposit Invoices were mailed to landowners in mid-June. If you received a bill and need support, email us at etsgsa-support@formationenv.com, call us at (209) 407-1233, or attend one of our scheduled drop-in support events.
Key Resources:
Deposit Invoice Cover Letter
Example of Deposit Invoice
Drop-In Support Flyer
Details of the Groundwater Use Fee: https://turlockgroundwater.org/prop-218-groundwater-use-fee
Groundwater Accounting Platform (GAP)
The Groundwater Accounting Platform (GAP) is the online platform that allows landowners and water users in the East Turlock Subbasin to track and manage consumptive groundwater use on irrigated parcels.
Key Resources:
GAP Activity Guide
GAP FAQ
Submit a Help Desk Ticket: https://groundwateraccounting.org/help
Rules & Regulations
ETS GSA adopted Rules & Regulations on January 23, 2025.
January 2025 Adopted Rules and Regulations
Reclassification Appeal Policy and Application
Demand Reduction Plan
Priority Action Area Maps
Priority Action Area Plans
Contact ETSGSA
Phone: (209) 407-1233
Mailing Address: 731 East Yosemite Avenue, Suite B #318, Merced, CA 95340
Regular Meetings
Sign up to be notified of meetings:
Board of Directors Meeting
The ETSGSA Board of Directors normally meets on the 3rd Thursday of every month 9 am at Cortez Hall.
Location: CORTEZ HALL 12937 North Cortez Avenue Turlock, California 95380
Online: Meeting attendance is also possible for the public on Zoom at: https://us02web.zoom.us/j/6488069477
Upcoming Dates:
June 26
July 24
August 28
September 25
Technical Advisory Committee (TAC) Meeting
The ETSGSA Technical Advisory Committee normally meets on the 2nd Tuesday of every month at 12 pm.
Location: TURLOCK IRRIGATION DISTRICT 333 East Canal Drive, Turlock, California Conference Room 203
Online: The meeting will also be available to the public on Zoom at: https://us02web.zoom.us/j/84623931634?pwd=MDUvYUYySjZZZDRmekM0VkJZOWtRdz09.
Upcoming Dates:
June 10
July 8
August 12
September 9