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
Lake Eva (Lake Alfred, Florida) Lake Eva (Lake Alfred, Florida) Lake Eva, located west of Polk County Road 557, is on the north side of the city of Lake Alfred, Florida. This lake is somewhat kidney-shaped and has a surface area of . Lake Eva in inside the Lake Alfred city limits and is west of Polk County Road 557. Its east shore is bordered by some homes with large lots. The northeast, north and west shores are bordered by citrus groves. A swampy area is on the south shore and a grassy area is along the southeast shore. Lake Eva is completely surrounded by