The Kansas City District, U.S. Army Corps of Engineers at Rathbun Lake is actively responding to a potentially toxic blue-green algae bloom with site-specific sampling and temporary beach closures. Algal toxin data from samples collected on August 7, 2019, from Buck Creek and Island View beaches have tested positive for the algal toxin microcystin in concentrations exceeding Iowa Department of Natural Resources state beach advisory threshold of 20 micrograms per liter of microcystin.