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Updates:
October 31, 2023: Harmful algal bloom (HAB) monitoring update
Recreational monitoring has ended for the season. Monitoring will resume in summer 2024. A harmful algal bloom may still be present at this waterbody. Know what to look for and check before recreating.
October 3, 2023: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Cottonwood Reservoir. Algae in the water is producing dangerous toxins that can make humans and animals sick.
TriCounty Health Department has issued a WARNING ADVISORY.
If you visit Cottonwood Reservoir:
- Do not swim or water ski
- Avoid areas of algae when boating
- Clean fish well and discard guts
- Keep animals away
- Don’t drink the water
- Know how to recognize a harmful algal bloom
September 27, 2023: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom is present at Cottonwood Reservoir. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
Be on the lookout if you visit Cottonwood Reservoir:
- Do not swim or water ski in areas of algae
- Avoid areas of algae when boating
- Clean fish well and discard guts
- Keep animals away
- Don’t drink the water
- Know how to recognize a harmful algal bloom
September 22, 2023: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: A harmful algal bloom has been reported at Cottonwood Reservoir. Algae in the water may be producing dangerous toxins that can make humans and animals sick.
Be on the lookout if you visit Cottonwood Reservoir:
- Do not swim or water ski in areas of algae
- Avoid areas of algae when boating
- Clean fish well and discard guts
- Keep animals away
- Don’t drink the water
- Know how to recognize a harmful algal bloom
August 29, 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: Boat Ramp SW side
August 18, 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: Boat Ramp SW side
June 26, 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: Boat Ramp SW side