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  • State Advisory Issued for Lake Pillsbury Due to Harmful Algal Bloom

    Lake County Health Services is notifying residents and visitors of a DANGER advisory recommended by the California State Water Resources Control Board for Lake Pillsbury following State testing that identified elevated levels of cyanobacteria and associated toxins consistent with a harmful algal bloom. For information regarding harmful algal blooms and recreational water advisories, visit California’s Harmful Algal Blooms Portal at https://mywaterquality.ca.gov/habs/index.html

Alert Start Date: September 1, 2026

Alert End Date: N/A

Contact Information

Contact Name: Upper Lake Ranger District

Contact Number: (707) 275-2361

Contact Email: sm.fs.mendopao@usda.gov

Rec Sites Affected

Last updated September 1, 2026