Dangerous levels of Cyanotoxins have been detected at nine Clear Lake sites including: Clearlake Oaks, Elem Indian Colony shoreline, Sulphur Bank Mercury Mine shoreline, Lily Cove, Austin Park, Redbud Park, Shady Acres, Jago Bay, and Lakeport, Library Park. Public Health urges boaters and other recreational lake users to avoid direct contact with or use of waters containing cyanobacteria in Lake County and to follow all posted signage regarding safe activities.