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
Okeechobee Plain to as part of the Kissimmee Embayment. The two major geographic features bounding the Okeechobee Plain are the Osceola Plain to the north and Caloosahatchee Incline to the southwest. Okeechobee Plain The Okeechobee Plain is a major geologic feature of Florida formed during the Pliocene and Pleistocene epochs and named for Okeechobee County, Florida, United States. The Okeechobee Plain is a dry prairie or grassland The Okeechobee Plain is within the Kissimmee/Okeechobee Lowland established by the Florida Department of Environmental Protection's Lake Bioassessment/Regionalization Initiative. The Okeechobee Plain was created during the Pliocene and Pleistocene's wild climatic times through continuous depositing