The Upper Castaic Lake closed Monday due to ongoing health concerns about toxic blue-green algae, reported the Department of Water Resources (DWR). On Monday, the DWR  alerted the public to the closure of Castaic Upper Lake. An ongoing toxic blue-green algae bloom has forced parts of the lake to close since late September. A danger advisory was put in place ...

State officials are warning boaters and swimmers about the danger of toxic algae in Pyramid Lake, which can cause serious illness. Don’t miss a thing. Get breaking KHTS Santa Clarita News Alerts delivered right to your inbox. The California Department of Water Resources issued a warning for those who use the lake to avoid direct contact with or use of waters containing ...