Public warned of cyanobacterial blooms in waters around Wyoming
August 2, 2021
On July 30, 2021, the Wyoming Department of Health has issued harmful cyanobacterial bloom (HCB) recreational use advisories for:
Big Sandy Reservoir
Eden Reservoir
Flaming Gorge Reservoir
West Granite Springs Reservoir
Pathfinder Reservoir
Saratoga Lake
Woodruff Narrows Reservoir
The Wyoming Department of Health is working directly with resource management agencies to ensure that signs are posted at all waterbodies with advisories. Additional details regarding advisories as well as other HCB resources can be found at WyoHCBs.org.
WDH issues recreational use advisories when cyanobacterial cell densities or cyanotoxin concentrations pose a risk to people engaging in swimming or similar water contact activities in areas where cyanobacterial blooms occur. HCBs may also pose a health risk to animals. Bloom advisories are issued when a HCB is present and toxins may be present. Toxin advisories are issued when cyanotoxins exceed recreational thresholds. Waterbodies under an advisory are not closed since HCBs may only be present in certain areas and conditions can change frequently. Advisories will remain in place until blooms have fully dissipated and cyanotoxin concentrations are below recreational use thresholds identified in Wyoming's HCB Action Plan.
If you encounter a potential HCB, the Wyoming Department of Health and Wyoming Livestock Board recommend the following:
• Avoid contact with water in the vicinity of the bloom, especially in areas where cyanobacteria are dense and form scums.
• Do not ingest water from the bloom. Boiling, filtration and/or other treatments will not remove toxins.
• Rinse fish with clean water and eat only the fillet portion.
• Avoid water spray from the bloom.
• Do not allow pets or livestock to drink water near the bloom, eat bloom material, or lick fur after contact.
• If people, pets, or livestock come into contact with a bloom, rinse off with clean water as soon as possible and contact a doctor or veterinarian.
Questions about health effects and recreational use advisories can be directed to Courtney Tillman, Surveillance Epidemiologist, Wyoming Department of Health, at courtney.tillman@wyo.gov or (307) 777-5522.
Questions regarding cyanobacteria sampling can be directed to Kelsee Hurshman, Natural Resource Analyst, Wyoming Department of Environmental Quality, at kelsee.hurshman1@wyo.gov or (307) 777-2073.
Current HCB Recreational Use Advisories
Big Sandy Reservoir
West Shore, Dam Area
Bloom
7/28/2021
Eden Reservoir
South Outlet
Bloom
7/28/2021
Flaming Gorge Reservoir
Buckboard Marina, Firehole Beach
Bloom
7/29/2021
West Granite Springs
West Causeway
Bloom
7/29/2021
Leazenby Lake
South Beach
Bloom
7/20/2021
Pathfinder Reservoir
Bishops Point
Bloom
7/29/2021
Saratoga Lake
West Boat Ramp, West Beach
Bloom
7/29/2021
Woodruff Narrows
North Boat Ramp
Bloom
7/28/2021
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