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Levee breach in upper Mad River Slough floods lagoons, prompts shellfish sampling and precautionary closure
Summary
District staff reported a levee breach near Seahorse Ranch that flooded lagoons, triggered a temporary precautionary closure of shellfish harvesting and prompted water sampling; agencies removed an aqua dam and district staff say lab results are still pending while they continue to advocate for growers.
District staff told the Humboldt Bay Harbor, Recreation and Conservation District at its regular meeting that a levee breach in the far upper channel of Mad River Slough, near Seahorse Ranch, allowed impounded water to flood lagoons and damaged shellfish nursery operations.
The report said the breach produced road flooding, washouts, increased turbidity and an observed fish kill. District staff said they dispatched consultant SHN to collect water samples and that some samples were…
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