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Lower Bowns Reservoir Recreational Monitoring

Lower Bowns Reservoir is located on the eastern slope of Boulder Mountain, south of Torrey. DEQ’s recreational water quality monitoring checks for two health concerns: Harmful Algal Blooms (HABs) and Waterborne Pathogens (E. coli). Find the most recent monitoring information below.

Updates:

October 31, 2023: Harmful algal bloom (HAB)  monitoring update

Recreational monitoring has ended for the season. Monitoring will resume in summer 2024. Waterborne pathogens may still arise at this waterbody. Know what to look for and check before recreating.


October 11, 2023: Harmful algal bloom (HAB) monitoring update

BE CAREFUL: A harmful algal bloom has been reported at Lower Bowns Reservoir. Algae in the water may be producing dangerous toxins that can make humans and animals sick. 

If you visit Lower Bowns Reservoir we recommend:

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