Mariposa County hears SB 552 drought‑resilience plan; adoption deferred pending data follow‑up

Mariposa County received a presentation on a drought resilience plan prepared to comply with Senate Bill 552, which consultants said focuses on state small water systems, individual wells and socially vulnerable residents. The presentation outlined the county’s exposure to drought — noting heavy reliance on fractured hard‑rock wells and a long record of groundwater studies — and emphasized the practical difficulties of interconnecting remote small systems because of high per‑mile pipeline costs.

The county’s consultant recommended that, with available county resources, the most economical and effective approach is to construct strategically located emergency water supplies (wells and storage tanks) to support vulnerable state small water systems and individual well owners during drought emergencies. The presentation said primary funding sources are expected to be grants from the Department of Water Resources tied to SB 552 implementation.

Why it matters: The plan responds to a state requirement aimed at preventing loss of drinking water during droughts in small and rural communities and directs county planning toward concrete emergency‑supply projects rather than costly consolidation in many parts of Mariposa County.

Board questions focused on local data and next steps. Supervisors and staff pressed the consultant for details on data sources (the consultant said the maps and outage information come from the Department of Water Resources vulnerability tool and offered to return with precise time periods and sources) and on whether certain recommendations were sufficiently tailored to county conditions. A supervisor raised concerns that some recommendations — including language about sustainable grazing and meadow restoration — were high‑level and asked how the Water Agency Advisory Board (the local task force under the plan) would convert those guidelines into specific, implementable actions.

Public and staff responses: Senior Planner Ben Goger supported the plan and highlighted nature‑based strategies in the draft (prescribed fire, riparian restoration, sustainable grazing) as complementary efforts that can aid groundwater recharge. Public Works Director Shannon Hansen and the consultant said the draft is intended as a living document; staff will compile supervisors’ questions and return with clarifying information and more locally specific recommendations prior to any formal adoption.

Next step: The board recorded receipt of the presentation and directed staff to provide detailed follow‑up and a return agenda for formal consideration; no adoption occurred at this meeting.

Representative quote: “This plan fills a gap, strengthens coordination, focuses on vulnerable populations, and positions the county to respond effectively during future droughts,” the project manager said in the presentation.

Ending: Staff said they would provide the supervisors’ questions in advance and return with answers and a recommended path to adoption at a future meeting.