In cooperation with the Army Corp of Engineers and Idaho Department of Environmental Quality, Public Health – Idaho North Central District is issuing a health advisory due to the presence of cyanobacteria.
This harmful algal bloom was found at the extreme upper end of Dworshak Reservoir, upstream of the Grandad boat launch at Reservoir Mile 46 on the North Fork of the Clearwater River located in Clearwater County. Recent samples taken indicate present concentrations of toxin-producing cyanobacteria that may cause illness to humans and animals. The public is urged to use caution when recreating in or near the water, especially when ingestion is at risk.
For more information about harmful algal blooms, including a map of advisories currently in effect throughout Idaho, visit DEQ’s website by clicking here.
