Lake Elsinore Marina & RV Resort 32700 Riverside Dr, Lake Elsinore, CA92530 Lake Elsinore Marina & RV Resort claims to have the "best boat launch in town." It has a 233-ft. wide concrete boat…More launch area with a gentle slope. It also features several docks. The shoreline is expansive and the view is wonderful. A U-turn after the guard house will be necessary to get to the handicapped ramp. The marina & RV resort is located on the south end of Riverside Drive just north of Grand Avenue.