BEND, OR -- Public Affairs Officer Jean Nelson-Dean of Deschutes National Forest warns the public of the dangers of blue-green algae and what to watch out for to make their own assessments of safe waters. The Oregon Health Authority says when in doubt, stay out. Dangerous water can look pea green, red-ish brown, foamy, scummy, and thick like paint. Many health problems can be caused by algae such as skin irritation, rash, diarrhea, and cramps. Blooms can also have dangerous health effects on pets. More information on closures of lakes due to algae can be found on the Ochoco and Deschutes Forest websites.