Caution continues for Lake Wilderness due to cyanobacteria bloom scum formations and low levels of the toxin microcystin.  Lab results from samples pulled on Monday, April 20, 2015 indicated toxin levels were well below the recreational threshold, however, caution signs will remain posted as required by the Washington State Department of Health recreational guidelines.

Most of the shorelines within the Lake Wilderness Park were clear with no scum formations; however, cyanobacteria can float on the lake surface and be blown about from one shoreline to another on the wind.

Fishing is allowed during caution postings and the Health Department recommends avoiding contact with any visible scum formations, avoid areas of scum when boating, clean fish well with freshwater and discard the guts.  As an extra precaution do not eat the fish liver or organ meats.

Cyanobacteria bloom toxins can threaten the health of people and pets if contacted or ingested and contact with visible scum formations should always be avoided.  Young children and pets are particularly at risk. Young children playing at the shoreline may contact the scum or get it in their mouths and pets may drink it or lick it off their fur.  Common symptoms include nausea, vomiting, diarrhea, and eye or skin irritation.  If water with visible scum is contacted or ingested, notify your doctor or veterinary and follow their instructions.