Okeechobee Waterway of Orlando and extending southward through the Kissimmee River Basin to the Everglades National Park to Florida Bay. The U.S. Army Corps of Engineers manages five locks and dams along the Okeechobee Waterway. The St. Lucie lock was built in 1941 for navigation and flood-control purposes. In 1944, the connecting spillway structure was built for flood and regulatory flow control through the St. Lucie Canal to manage the water level in Lake Okeechobee. The Port Mayaca Lock and Dam was built in 1977 for navigation purposes, to permit the raising of water levels in Lake Okeechobee, and to moderate the
Crystal Lake (south Winter Haven, Florida) Crystal Lake (south Winter Haven, Florida) Crystal Lake is a circular natural freshwater lake, with a small cove on its northwest corner, on the south side of Winter Haven, Florida. It has a surface area. This Crystal Lake is one of seven Crystal Lakes in Polk County, Florida. The Polk County Water Atlas says it is also sometimes called Lake Cunningham. Crystal Lake is bordered on the north and northwest by residences. The rest of the lake is bordered by citrus groves or vacant land. There is no public access to this lake. However, persons have been using a dirt