MELVERN, Kan. – The U.S. Army Corps of Engineers announce the existence of a blue-green algae bloom at theOutlet Campground River Pond and Outlet Swim Beach/Fish Rearing Pond downstream of Melvern Lake. These ponds are currently under a warning based on cyanobacteria/toxin results from August 3 testing conducted by the Kansas Department of Health and Environment. As a result the swim beach at Outlet Swim Beach/Fish Rearing Pond is closed until further notice. All other facilities in Outlet Park and Melvern Lake remain open.