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Natural Resources - Groundwater

In September 2014, Governor Jerry Brown signed legislation requiring that California's critical groundwater resources be sustainably managed by local agencies, through the Sustainable Groundwater Management Act (SGMA). In Siskiyou County there are four basins that fall under the requirements of SGMA; the Shasta, Scott and Butte Valley Basins and the Tulelake Subbasin. To carry out the requirements of SGMA, the Siskiyou County Flood Control and Water Conservation District serves as the Groundwater Sustainability Agency (GSA) for the three basins, and the Siskiyou County Board of Supervisors serves as a member of the GSA for the Tulelake Subbasin; alongside Tulelake Irrigation District, Modoc County and the City of Tulelake.

These GSA's are required to develop Groundwater Sustainability Plans four each of the basins by January 31, 2022, that will assess the current and projected future conditions of the basins, and will establish management and monitoring activities and long-term goals. For more information on Groundwater Sustainability Plans, please visit the following link:  

SGMA is a locally driven & public process that will include several opportunities for public input and participation. Advisory committees have been established for each of the basins, made up of members of the public. Advisory committee meetings will be public, and meeting agendas will be distributed prior to each meeting to provide the public with opportunities to attend and provide public comment and input.  In addition, If you would like to submit or provide public comment directly to the GSA's please attend the Siskiyou County Flood Control & Water Conservation District meetings during the Siskiyou County Board of Supervisors meetings (visit for information on those dates and agendas), or regular meetings held by the Tulelake GSA (please contact the Tulelake Irrigation District at (530) 667-2449) . If you are unable to attend any of the meetings and would like to provide public comment, or would like to be added to the SGMA outreach list, please email Matt Parker at  

SGMA Public Outreach:

April 17th Staff Report as Approved by the Siskiyou County Flood Control and Water Conservation District

Advisory Committee's:

Formation resolutions:    

Committee Task and Guidelines

Advisory Committee Meetings & Activities

  • Butte -
    • April 5th, 2018     Agenda
    • June 12th, 2018     CANCELLED    
  • Shasta

GSA Meetings & Activities:

Board of Supervisors/Flood Control District Meeting Agendas

Flood Control District Meeting Minutes

Published Documents/Planning Efforts:

GSP Initial Notifications:     Butte     Scott     Shasta

Shasta Valley Basin Boundary Modification Proposal

Shasta Basin boundary modification workshop on 3/14 & 3/15:     Meeting Notice     Powerpoint Presentation

Shasta Basin boundary modification workshop on 5/31/18:     Draft Proposed Map     Presentation Slides

Flood Control District Public Hearing regarding Shasta Boundary line modification: June 12th at 130pm     Presentation

DWR Boundary Modification Initial Notification Submittal

SGMA Maps:

Siskiyou Overview Map

Shasta Valley Basin Map

Scott Valley Basin Map

Butte Valley Basin Map