The Glenn Groundwater Authority was created by forming a Joint Exercise of Powers Agreement, signed by nine local agencies, with the purposes of being a Groundwater Sustainability Agency for the Glenn County portion of the Colusa Subbasin. A tenth member joined the Glenn Groundwater Authority October 14, 2019.

Glenn Groundwater Authority Member Agencies include:

  • City of Orland
  • City of Willows
  • County of Glenn
  • Glenn-Colusa Irrigation District
  • Glide Water District
  • Kanawha Water District
  • Monroeville Water District
  • Orland-Artois Water District
  • Princeton-Codora-Glenn Irrigation District
  • Provident Irrigation District


The notice declaring the Glenn Groundwater Authority’s decision to become a Groundwater Sustainability Agency and its intent to manage groundwater within the Glenn County portion of the Colusa Subbasin submitted to the Department of Water Resources (DWR) can be found on the DWR SGMA Portal at:

A copy of the Joint Powers Agreement (JPA) and resolutions from each member agency can also be found on the DWR SGMA Portal.


Board Meetings are open to the public.  See the GGA Meetings page for more information. 

List of Directors and Alternates

County of GlennGrant CarmonTom Arnold
City of OrlandBruce RoundyPete Carr; Ed Vonasek (2nd Alternate)
City of WillowsGary Hansen (23/24 Chair)Cal Water- Tavis Beynon
Glide Water DistrictMatt DeadmondVacant
Glenn-Colusa Irrigation DistrictJohn Amaro (23/24 Vice-Chair)Vacant
Orland-Artois Water DistrictChuck SchonauerEmil Cavagnolo
Kanawha Water DistrictRandy HansenWade Danley
Monroeville Water DistrictMark LohseSeth Fiack
Princeton-Codora-Glenn Irrigation District & Provident Irrigation DistrictGary EnosJered Shipley

For questions, comments, or to sign up to be on the interested parties list, please contact the GGA Program Manager:

Lisa Hunter

[email protected]

225 N Tehama St., Willows, CA 95988

(530) 934-6540


Social Media for Colusa Subbasin SGMA




Drought Resources

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