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Panel advances bill expanding geological-hazard definitions to include climate-driven risks
Summary
SB 831 would broaden the definition of geological hazards to include conditions exacerbated by climate change such as post-fire debris flow and inland/coastal erosion; the Appropriations Committee advanced the measure with sponsors saying it allows better use of the California Geological Survey's expertise.
The Assembly Appropriations Committee advanced SB 831 on July 2, 2025. The bill, presented by Sen. Cherry, would clarify and expand the definition of geological hazards to include conditions tied to natural disasters and climate change, such as mineral hazards, post-fire debris flows, and inland and coastal erosion.
Sen. Cherry said the change would update obsolete statutory language and give state agencies clearer direction on where to focus hazard planning and resources. Adam Harper of the California Construction and Industrial Materials Association told the committee the bill would let the California Geological Survey use expertise gained from post-fire slope-stability work to inform pre-fire planning and mapping of geologic and mineral hazards.
The Department of Finance recorded "no file" on the measure in the hearing. Committee members moved and seconded the bill; the committee reported SB 831 advanced on a roll call, with the transcript recording Republicans did not vote on the measure.
Supporters argued the clarification would help state and local agencies better plan for climate-amplified geologic hazards; no opposition witnesses were recorded in the hearing excerpt.
