When water levels are high, additional storage is needed to hold excess surface water on private and public lands in the greater Everglades system. Dispersed water storage projects are needed to help reduce the amount of water delivered into Lake Okeechobee during the wet season and discharged to coastal estuaries for flood control. Nearly one million acre-feet of water storage is needed upstream of Lake Okeechobee.
The Nicodemus Slough project encompasses 15,859 acres of eastern Glades County in central south Florida. The slough is located immediately west of Lake Okeechobee and about six miles northwest of Moore Haven. Fisheating Creek meanders along the northern project boundary but remains separated from the project by a series of dikes and canals.
The Nicodemus Slough project began operating in late 2014. When Lake Okeechobee levels are high, water is pumped from the lake's rim canal west to the highest of the project site. The water then moves in a sheetflow east across the site through a series of basins. Nicodemus Slough is capable of providing up to 34,000 acre-feet or 11 billion gallons of water.
The project objectives include reducing high stages in the lake, reducing harmful freshwater discharges to coastal estuaries, improving water quality by reducing phosphorus loads, and rehydrating wetlands that enhance plant and wildlife habitat. Additionally, the project can provide stored water back to the lake or the Caloosahatchee River as needed in dry periods.
Nicodemus Slough provides temporary storage for 34,000 acre-feet of water drawn from Lake Okeechobee. Between the pumping of water from Lake Okeechobee and the retention of rainfall on the project, 53,120 acre-feet of water was retained in 2015 and not discharged. In addition, the project was able to deliver 2,686 acrefeet of water to the Caloosahatchee River when desired.