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Chowchilla subbasin GSAs to use Davis Engineering for demand management and subsidence planning; Madera share capped at $60,000
Summary
An informational item introduced a proposed contract with Davis Engineering totaling $193,400 (shared across four GSAs) to develop demand management programs and subsidence mitigation measures for the Chowchilla Subbasin; Madera County's share will not exceed $60,000 and the contract runs Sept. 2025–June 2026
Madera County staff presented an informational overview of a proposed contract between the Chowchilla Subbasin GSAs and Davis Engineering to develop groundwater demand‑management programs and subsidence mitigation measures.
Why it matters: The State Water Resources Control Board requested the Chowchilla GSAs prepare demand‑management programs and specific subsidence mitigation triggers; engineering support is needed to plan implementation steps and to be ready to act if triggers are met.
Contract summary
- Contractor and scope: Davis Engineering; three task groups: (1) development of groundwater demand management program and subsidence mitigation measures (including timelines for voluntary and mandatory responses if triggers occur); (2) coordination meetings with GSA staff and technical teams; (3) public workshops and GSA meeting support.
- Cost and cost‑share: Total not‑to‑exceed $193,400, split proportionally by gross acreage across the four GSAs in the Chowchilla Subbasin. The Madera County GSA portion will not exceed $60,000. Triangle T Water District received permission to move $33,000 from an existing DWR grant to offset its share.
- Timeline: Contract period September 2025–June 2026. The scope is planning and readiness work; implementation of measures would occur only if triggers are reached and GSAs choose to implement.
Public comment and committee notes
Staff said this is informational only and that the contract will be coordinated through the Chowchilla GSP advisory group. Committee members asked whether the item will return to committee; staff responded it is for awareness and will be managed through the subbasin advisory process.
Ending: No committee action required. The contract aims to prepare GSAs in the Chowchilla Subbasin for demand‑management and subsidence mitigation work required by the State Water Resources Control Board.
