Vina Groundwater Sustainability Agency

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Oroville, CA
Vina Groundwater Sustainability Agency

The Vina Groundwater Sustainability Agency (GSA) manages groundwater to ensure a reliable water supply for rural areas, agriculture, and environmental needs, now and in the future.

04/29/2026

The Vina GSA has released a strawman proposal for land subsidence monitoring and we want your input. Join us May 7 for a Discussion Session
https://www.vinagsa.org/gsp-periodic-evaluation #:~:text=%C2%A0Strawman%20Proposals%20%E2%80%93%20for%20consideration%20and%20discussion

10/22/2025

We recently posted about Towed Transient Electromagnetic (tTEM) scans being completed across the Vina Subbasin. These innovative scans provide 3D subsurface—underground—data, helping us map where water can most effectively migrate down to recharge our groundwater. Two scans were completed just north and south of Chico.

tTEM scans map electrical resistivity, which tells us how easily an electrical current flows through the soil. Finer soil allows electrical currents to flow more easily than coarse-grained soil. The lower numbers or gray colors on the figure represent finer soil (easier-flowing current), and the higher numbers or yellow to red represent coarse-grained soil.

The figures below help us assess which areas will most easily allow water to migrate to groundwater. However, we still need to test for other factors, such as existing water. To validate our findings, we began Cone Penetrometer Tests (CPT) in August. CPT will give us critical details like actual material types, estimates for how easily water can move through the soil, and how deep the existing water is located. This multi-layered approach ensures we identify effective locations for future recharge projects!

09/18/2025

The Vina Groundwater Sustainability Agency (GSA) adopted a two-part fee structure to fund essential groundwater management activities required under the Sustainable Groundwater Management Act (SGMA).

Part 1 – Base Fee
$12.62 per usable parcel within the GSA boundary—Covers basic agency operations, governance, staffing, and compliance activities that keep the GSA functioning.

Part 2 – User Group Fee
Covers the cost of sustainably managing groundwater, including monitoring and modeling.

- Group 1 – Agricultural Users: $4.22 per cropped acre
- Group 2 – Domestic/Municipal Users (residential, industrial, commercial): $0.96 per parcel
- Group 3 – Grazing/Vacant Parcels: No Part 2 fee

Example: A typical residential home on 0.25 acres will pay $13.58 for FY 2026.

These fees ensure the GSA can meet State requirements, maintain local control, and protect reliable groundwater supplies for agricultural, residential, and environmental needs—now and in the future.

Learn more, see the full FAQ, or view the Fee Study Report at www.vinagsa.org.

09/16/2025

Sustainable groundwater management starts with you. Sign up for our newsletter for tips to support sustainability at home, engage with groundwater management efforts, and learn more about our work to protect groundwater in the Vina Subbasin.

Sign up at vinagsa.org.

09/09/2025

Interested in shaping groundwater sustainability for our region? The Vina GSA is launching a year-long effort to evaluate and potentially amend its Groundwater Sustainability Plan (GSP) in response to state recommendations and new data. We want to hear from you as we consider updates!

Learn more at the Board meeting on September 10.

09/08/2025

The Vina GSA Board is meeting on September 10 to discuss evaluation and possible amendments to the Vina Groundwater Sustainability Plan and a Demand Reduction Strategies Project tax incentive inquiry. You’re invited to join the conversation!

Join us on September 10 at 3:30 PM located at Chico City Council Chamber, 421 Main Street, Chico CA.

Learn more about our Board and projects at vinagsa.org.

09/05/2025

It’s Protect Your Groundwater Day! Help us celebrate by being a responsible steward of the Vina Subbasin. You can help ensure our groundwater supply remains sustainable by:

- Testing your well each year to understand and maintain its quality.
- Using smart practices, like maintaining your septic system appropriately.
- Watering wisely at home and on your property.
- Staying up to date on the latest groundwater projects.

Learn more at vinagsa.org.

08/25/2025

The Vina Groundwater Sustainability Agency’s Stakeholder Advisory Committee (SHAC) is meeting this in August. Mark your calendar: This Wednesday, August 27, the SHAC will meet to discuss the roadmap for the Groundwater Sustainability Plan Periodic Evaluation, the Demand Reduction Strategies Project: Extend Orchard Replacement Tax Incentive Inquiry, and Stakeholder Understanding.

Meeting details:
August 27 | 9 a.m. to 12 p.m.
Butte County Library, Chico Branch | 1108 Sherman Avenue, Chico, CA 95926

Learn more about the SHAC and how you can get involved at www.vinagsa.org/stakeholder-advisory-committee-shac

07/22/2025

Ever heard of an 'Underground MRI?' Our team is using Towed Transient Electromagnetic (tTEM) scans to peek down as deep as 200 feet, mapping out what's beneath our feet. This "Earth MRI" details soil and rock layers, showing how water moves. Why? This vital data will help us pinpoint the best spots for groundwater recharge projects to secure our water sustainability and resilience in the Vina Subbasin. Check out the video to see the equipment in action! Learn more about this project at www.vinagsa.org/water-supply-and-recharge-project-implemented-by-butte-county.

Address

308 Nelson Avenue
Oroville, CA
95965

Website

https://www.vinagsa.org/

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