High cell counts of harmful algae found in Lane County lake – The Oregon Health Authority issued a recreational health advisory Wednesday, June 13, for Dorena Reservoir, located six miles east of Cottage Grove in Lane County. Water monitoring has confirmed the presence of harmful algae above Oregon Health Authority recreational guideline values for cell counts. Harmful algae at this level are likely to be associated with cyanotoxin concentrations that can be harmful to humans and animals.
