Beach and Lake Monitoring

Find current beach and lake conditions here.

From Memorial Day to Labor Day, multiple Winnebago County lakes and beaches are monitored to ensure the safety of residents who want to enjoy the water on hot summer days. In partnership with the University of Wisconsin-Oshkosh's ERIC Lab, the Winnebago County Health Department monitors the water quality at beaches on Lake Winnebago, Lake Butte des Mortes, and Lake Poygan.

UWO students collect water samples from public access points and analyze the samples for E. coli bacteria, blue-green algae, and their toxins to protect swimmers and other recreational water users. If a water test is concerning, the beach will close for swimming until E. coli bacteria or blue-green algae levels go down. Before you head out to the beach, be sure to check beach condition reports.