UC Davis proposes hypolimnetic oxygenation pilot for Clear Lake to curb internal phosphorus loading
UC Davis researchers outlined a three-year pilot to inject oxygen into Clear Lake bottom waters to reduce internal phosphorus release, targeting the Oaks Arm as a demonstration to lower risks of harmful algal blooms; board members pressed on permitting, costs and how a pilot would be sustained after grant funding ends.
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Researchers from UC Davis told the Board that internal loading from lakebed sediments drives roughly 70% of the phosphorus that fuels summer algal blooms in Clear Lake. To reduce that source, the team proposed a hypolimnetic oxygenation system (HOS) pilot in the Oaks Arm for up to three years aimed at keeping bottom waters oxygenated to prevent phosphorus release.
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