The city of Casper has closed water access to Lake McKenzie due to the possible presence of harmful cyanobacterial blooms.
In a press release, the city advised both humans and animals — in particular, dogs — to stay away from the north Casper lake for the time being. The Wyoming Department of Environmental Quality (DEQ) is investigating the blooms, which are dense concentrations of what is often known as blue-green algae. The blooms can be harmful to both people and pets.