Harmful Cyanobacterial Bloom (HCB) Recreational Use Advisories Lifted at Multiple Waterbodies

Wyoming Department of Environmental Quality  | view as a webpage

Wyoming Department of Environmental Quality

Harmful Cyanobacterial Bloom (HCB) Recreational Use Advisories Lifted at Multiple Waterbodies

The Wyoming Department of Health has lifted the recreational use advisories for harmful cyanobacterial blooms (HCBs) for the following lakes and reservoirs: Boysen Reservoir (Fremont County), Eden Reservoir (Sweetwater County), Festo Lake (Platte County), Flaming Gorge Reservoir (Sweetwater County), Fontenelle Reservoir (Lincoln County), Kemmerer City Reservoir (Lincoln County), Lake Viva Naughton (Lincoln County), Leazenby Lake / Hundred Springs Reservoir (Albany County), Ocean Lake (Fremont County), Pathfinder Reservoir (Carbon/Natrona Counties), Saratoga Lake (Carbon County), Toltec Reservoir (Albany County), Wheatland Reservoir #1 (Platte County), Wheatland Reservoir #3 (Albany County) and Woodruff Narrows Reservoir (Uinta County).

The recreational use advisory for Keyhole Reservoir (Crook County) remains in place.

Satellite imagery from the Cyanobacteria Assessment Network (CyAN) and other platforms indicated that cyanobacterial blooms have largely dissipated in each of the lakes and reservoirs where advisories are being lifted. The Wyoming Department of Health is working directly with water management agencies to remove advisory signs at the lakes and reservoirs.

Although most blooms occur during the warmer summer and fall months, some types of cyanobacteria are known to persist in freezing conditions and may continue to pose health risks to people and animals. As such, the Department of Health and Wyoming Livestock Board remind the public to avoid contact with and keep pets and livestock away from blue-green water and blooms that may look like floating grass clippings, mats, scums and pastes. Hunters and fishermen should rinse waterfowl and fish with clean water and discard all guts.

For more information on HCBs and recreational use advisories in Wyoming, visit WyoHCBs.org.

Questions about health effects and recreational use advisories can be directed to Dr. Karl Musgrave, State Environmental Health Epidemiologist / State Public Health Veterinarian, Wyoming Department of Health, at karl.musgrave@wyo.gov or (307) 777-5825.

Questions regarding HCB sampling and satellite imagery can be directed to Michael Thomas, Natural Resource Analyst, Wyoming Department of Environmental Quality, at michael.thomas@wyo.gov or (307) 777-2073, or Lindsay Patterson, Surface Water Quality Standards Coordinator, Wyoming Department of Environmental Quality, at lindsay.patterson@wyo.gov or (307) 777-7079.