Conservancy presentation challenges sediment modeling for Lake Malibu drawdown

Jun 18, 2026

Wild Rivers Conservancy told the committee the Stantec sediment model likely underestimates dry bulk density and phosphorus transport; the group urged direct site sampling before any drawdown proceeds.

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At the Community Development Committee's special meeting, Mark White of the Wild Rivers Conservancy presented technical slides questioning assumptions in Stantec's sediment-transport modeling and urged that direct dry bulk-density sampling at Lake Malibu be completed before any authorization is final.

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