Sustainable Groundwater Management Act (SGMA)


Map of groundwater subbasins in Glenn County

Click here to download the map.

The Sustainable Groundwater Management Act (SGMA) is a collection of Bills (SB 1168, AB 1739, SB 1319) that were signed into law by Governor Brown on September 16, 2014. The intent of the Act was to mandate comprehensive groundwater management throughout the state.  The Act focuses on local control, but provides state oversight and state intervention if local efforts fail to manage groundwater conditions effectively. Implementation will take place over the next several years.

Regionally, eligible local agencies have committed to undertake the responsibility of SGMA implementation by serving as a Groundwater Sustainability Agencies as provided by the law.  The Groundwater Sustainability Agencies were given authorities and responsibilities to sustainably manage groundwater within their jurisdiction while avoiding six undesirable results, including significant and unreasonable:

  • Chronic lowering of groundwater levels

  • Reduction of groundwater storage

  • Seawater intrusion

  • Degraded water quality

  • Land subsidence

  • Depletions of interconnected surface water

Local SGMA Implementation

Colusa Subbasin
Corning Subbasin
Butte Subbasin
Glenn County Sustainable Groundwater Management Act (SGMA) Updates
Glenn County: Subbasin Factsheet (6/3/19)
SGMA presentation at December 3, 2018 Glenn County Growers Meeting
Glenn County SGMA Working Group Meetings (2016-2017)

Countywide Projects

Data Management and Hydrogeologic Conceptual Model Project (2016-2018)

Links to Statewide Information and Activities

Department of Water Resources
State Water Resources Control Board

Stay Informed
If you would like to receive notices about SGMA implementation in Glenn County, please join our email list.  Email and request to be added.