Blue-green Algae in Colorado
2 confirmed blue-green algae reports in Colorado, none currently active. About this disease: symptoms and prevention.
2
Reports on record
0
Currently active
0
Last 7 days
0
Last 30 days
Recent reports
Blue-green Algae
Historical · Aug 13, 2026
Gunnison
Iola Basin, Blue Mesa Reservoir; NPS caution signs posted, do not let pets drink the water
Source ↗Blue-green Algae
Historical · Aug 7, 2026
Hasty
West boat ramp cove, John Martin Reservoir State Park, Bent County; toxin at 10 ug/L against an 8 ug/L threshold, keep dogs leashed and out of the water. East ramp tested clean
Source ↗