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Hyrum Reservoir Recreational Monitoring

Hyrum Reservoir is located south of Logan in Cache County. 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: Waterborne pathogen (E. coli)  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.


June 27, 2023: Waterborne pathogen (E. coli) monitoring update

GOOD NEWS: E. coli counts were measured below Utah Department of Health recreational thresholds. Sampling suggests that the water is safe from harmful bacteria and viruses.

Site sampled: Hyrum State Park day use area and swim beach

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