From The Fort Collins Coloradoan (Miles Blumhardt):
Tuesday, Windsor announced it was closing Windsor Lake Reservoir because the water tested positive for cyanobacteria, also known as blue-green algae. The test was conducted Thursday.
The popular lake’s swim beach and dog beach have been roped off. Swimming, bathing and pets are not allowed in the water. Rentals and concessions will not be available during the closure.
Permitted motorized and non-motorized boaters are allowed on the lake but tubing and water skiing are not allowed. Boat traffic actually agitates the water and helps reduce the bacteria, which is why it is allowed. Non-motorized boaters can recreate in the reservoir at their own risk.
“Out of an abundance of caution last week, we issued a precautionary health advisory,” Eric Lucas, Windsor’s Director of Parks, Recreation & Culture, stated in a release. “A new sample has been sent to the state laboratory today and we will continue to test weekly until the bacteria clears up.”