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San Diego basin‑plan biological objective prompts debate over science, flood‑control channels and implementation
Summary
A State Water Board workshop on May 6 explored a proposed San Diego basin‑plan biological objective based on the California Stream Condition Index (CSCI ≈ 0.79); scientists endorsed the index while flood‑control agencies warned of conflicts where channels are actively maintained for flood protection.
The State Water Resources Control Board on May 6 hosted a workshop on the San Diego Regional Water Quality Control Board’s basin plan amendment to adopt a biological water‑quality objective based on the California Stream Condition Index (CSCI). Panelists and public commenters split largely along scientific‑and‑operational lines: scientists and environmental groups urged adoption and use of the CSCI threshold as the best available tool for measuring biological integrity, while flood‑control and county agencies warned that hard‑to‑restore, soft‑bottom flood channels require an implementation path that avoids unintended conflicts with flood‑control maintenance.
Scientists from the State Water Board’s monitoring programs and the Southern California Coastal Water…
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