The map and table below are continually updated with the most current information on recreational use health advisories issued and lifted throughout the season for monitored and sampled water bodies.
Remember: Only a fraction of all water bodies in Oregon are visually monitored or sampled due to limited physical and monetary resources. A water body with no recreational health advisory is not an indication that a bloom is not present. You are your own best advocate when ensuring your safety, and that of your family and pets. Be aware and "when in doubt, stay out."
Douglas County Permanent Recreational Use Health Advisory: South Umpqua River and Lawson Bar
Pools in the bedrock along the rivers edge are known to develop cyanobacteria (blue-green algae) blooms that can be harmful to pets and people if accidental ingestion occurs. Signs have been posted at several access areas along the river.
= Advisory in effect. 
= Advisory has been lifted. 
= Permanent advisory.
The advisory for North Tenmile Lake was lifted on September 13, 2019. Due to technical issues, we are unable to update the map at this time.