County advisers and staff say low dissolved oxygen likely caused Clear Lake fish kill; white sturgeon sampled Lake County advisory committee members and county water staff reported that vertical profiles taken after an early-September fish die-off showed extremely low dissolved-oxygen levels throughout the water column at multiple Clear Lake sites. The advisory committee recovered a large dead white sturgeon and has sent tissue samples to a lab; a written,

A shocking fish kill in Clear Lake has been linked to dangerously low dissolved oxygen levels, raising concerns about the health of local aquatic life.

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