Division of Water Quality
Otter Creek Reservoir Recreational Monitoring
Otter Creek Reservoir is located in Piute County near Antimony. 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.
Looks Good!
There are no current health advisories for this water body.
Conditions may change quickly. Check before entering the water and know how to spot a harmful algal bloom.
Updates
October 1, 2026: Harmful algal bloom (HAB) monitoring update
GOOD NEWS: Our monitoring team did not see any visible signs of a harmful algal bloom. Learn more about harmful algal blooms.
Site(s) visited: Beach Access
August 17, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Otter Creek Reservoir. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
If you visit the area:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep animals away
- Don't drink the water
- Know how to recognize a harmful algal bloom
August 14, 2026: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: Our crew has observed a potentially harmful algal bloom at Otter Creek Reservoir. There could be algae in the water producing dangerous toxins. We collected samples and results are pending. Check back here for updates.
In the meantime we recommend:
- Do not swim or water ski in areas of algae
- Avoid areas of algae when boating
- Clean fish well and discard skin and guts
- Keep pets and livestock away from the water and shoreline
- Don't drink the water
- Know how to recognize a harmful algal bloom
Site(s) sampled: Beach Access, Tamarisk Point Campground
July 29, 2026: Waterborne pathogen (E. coli) monitoring update
GOOD NEWS: E. coli counts were measured below recreational thresholds. Sampling suggests that the water is safe from harmful bacteria and viruses.
Site(s) sampled: Beach Access, Upper Dam
July 15, 2026: Harmful algal bloom (HAB) monitoring update
GOOD NEWS: Our monitoring team did not see any visible signs of a harmful algal bloom. Learn more about harmful algal blooms.
Site(s) visited: Beach Access, Tamarisk Point Campground
June 16, 2026: Harmful algal bloom (HAB) monitoring update
GOOD NEWS: Our monitoring team did not see any visible signs of a harmful algal bloom. Learn more about harmful algal blooms.
Site(s) visited: Beach Access
June 12, 2026: Waterborne pathogen (E. coli) monitoring update
GOOD NEWS: E. coli counts were measured below recreational thresholds. Sampling suggests that the water is safe from harmful bacteria and viruses.
Site(s) sampled: Beach Access