State program ramps up sampling to test CSCI performance in intermittent streams

Nov 3, 2025

SWAMP reported statewide efforts to identify and monitor intermittent reference sites to evaluate whether the California Stream Condition Index (CSCI) performs reliably across flow regimes; teams will add data loggers, recon sites, and prioritize regions lacking coverage.

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Chad Laughlin (San Diego Regional Water Board) and Nathan Mack (California Department of Fish and Wildlife, Aquatic Biosassessment Lab) presented a statewide effort to evaluate the California Stream Condition Index (CSCI) in intermittent streams and to expand reference‑site coverage.

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