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About the Vina Groundwater Sustainability Agency (Vina GSA)

Vina Subbasin: Groundwater Management Factsheet


The Vina Subbasin is a portion of the larger Sacramento Valley Groundwater Basin covering approximately 184,917 acres. The subbasin is located entirely within Butte County and is generally bounded by Tehama County to the north, the alluvial basin to the east (as defined by Bulletin 118), the border of the Western Canal Water District, and the Sacramento River to the west.

The Vina Subbasin has two Groundwater Sustainability Agencies (GSA): Vina GSA and Rock Creek Reclamation District GSA.

Vina GSA

Vina GSA: Governs the majority of the subbasin and consists of the following entities:

  • City of Chico
  • County of Butte
  • Durham Irrigation District

    The Vina GSA has 5 Board of Director seats (3 for the Member Agency Directors, 2 for Stakeholder Directors).