10/15/2026
β οΈ A Toxin Advisory is in effect at several locations at the reservoir due to harmful cyanobacterial blooms (HCBs).
π Custer Cove Campground, the Marina, Reno Cove Camp, and Wh***ey Gulch Ramp
At these locations, toxin levels are unsafe for swimming or fishing; avoid areas near blooms.
A Bloom Advisory also remains in effect for the entire reservoir.
The Wyoming Department of Environmental Quality (DEQ), the Wyoming Department of Health, and the Wyoming Livestock Board recommend that you:
π« Do not swim in or come into contact with green water, floating scums or clumps.
π« Do not ingest water from a bloom; boiling, filters, and other treatments will not make the water safe.
π£ Rinse fish with clean water and eat only the fillet portion.
π§ Avoid water spray from a bloom.
πΎ Do not allow pets or livestock to drink water, eat bloom material, or lick their fur after contact.
If contact occurs, rinse with clean water immediately and contact a doctor or veterinarian if symptoms develop.
Learn more, view the live advisory map, or report a suspected bloom at WyoHCBS.org.
Visitors can still enjoy hiking, biking, camping away from the shoreline, and wildlife viewing. Please keep a close eye on kids and pets near the water.
Photos courtesy of the Wyoming DEQ.