Stay away from algae and scum in the water.
Do not let pets and other animals go into or drink the water, or eat scum on the shore.
Keep children away from algae in the water and on the shore.
Do not drink the water or use it for cooking.
For fish caught here, throw away guts and clean fillets with tap water or bottled water before cooking.
Do not eat shellfish from this water.
Here's the link to the full article:
Health Advisory (advice in article) for Crowley Lake