First Moses Lake now Potholes Reservoir. Late last week, the Grant County Health District issued an advisory for the public to avoid contact with Potholes Reservoir because of blue-green algae. A recent water sample taken by the State Department of Ecology showed toxin levels higher than state recreational guidelines.
Less than two weeks ago, the Department of Ecology issued a similar warning for Moses Lake.
Caution and warning signs have been posted around public access points to the reservoir and will remain posted until the algae toxin levels are below guidelines for two consecutive weeks. Pets and livestock are also at risk of illness or even death if the water is consumed.