Cowan Lake State Park, OH, Site 226. When we arrived at this site we were 1 0f 3 trailers on our loop. But as the weekend approached the rigs got thicker and thicker….The Blue/Green algae signs at each and every water location scared us off enough. Unfortunately the dogs didn’t go swimming at this park That aside the park was very nice, with lots of gorgeous sites include #120. Although the were not available to us during our booking, they had a tremendous amount of full service sites