Lost Creek Reservoir is approximately 10 miles northeast of Croydon in Morgan 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.
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Updates
November 1, 2024: Harmful algal bloom (HAB) and E. coli monitoring update
Recreational water quality monitoring has ended for the season. Monitoring will resume in summer 2025. Harmful algal blooms can occur year-round, so know what to look for and always check before recreating.
October 22, 2024: 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 visited: State park boat ramp, SE shore 400m from dam crossing, SW shore nearest the spillway.
October 10, 2024: Harmful algal bloom (HAB) monitoring update
BE CAREFUL: Our monitoring team saw visible signs of a harmful algal bloom at Lost Creek Reservoir. There could be algae in the water producing dangerous toxins. Know how to recognize a harmful algal bloom and avoid areas of algae when recreating.
- 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 24, 2024: Waterborne pathogen (E. coli) & HAB 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. No signs of harmful algae were observed.
Site sampled: SE shore, State Park boat ramp, SW shore, state park boat ramp
August 27, 2024: 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: State park boat ramp, SE shore 400m from dam crossing.
August 27, 2024: 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 visited: State park boat ramp, SE shore 400m from dam crossing, SW shore nearest the spillway.
July 17, 2024: 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: State park boat ramp, SE shore 400m from dam crossing.
July 17, 2024: 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 visited: State park boat ramp, SE shore 400m from dam crossing, SW shore nearest the spillway.
June 20, 2024: Waterborne pathogen (E. coli) & HAB 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. No signs of harmful algae were observed.
Site sampled: SE shore, State Park boat ramp, SW shore, state park boat ramp.