The U.S. Army Corps of Engineers (USACE) Jacksonville District will start releasing water from Lake Okeechobee this weekend as part of its effort to manage rising water levels.
The discharges are scheduled to begin Friday (June 1). The target flow for the Caloosahatchee Estuary is 4,000 cubic feet per second (cfs) as measured at Moore Haven Lock (S-77) located in the southwest part of the lake. The target flow for the St. Lucie Estuary is 1,800 cfs as measured at St. Lucie Lock (S-80) near Stuart. Additional runoff from rain in the St. Lucie basins could occasionally result in flows that exceeds the target.
“Historic rain across the region since the middle of May has caused the lake to rise more than a foot,” said Col. Jason Kirk, Jacksonville District commander. “We have to be prepared for additional water that could result from a tropical system. The lake today is above the stage when Irma struck in September, which eventually caused the water level to exceed 17 feet. A similar storm could take the lake to higher levels.”
Today, the lake stage is 14.08 feet, up 1.25 feet from its 2018 low which occurred May 13. The lake is currently in the Operational Low Sub-Band as defined by the 2008 Lake Okeechobee Regulation Schedule (LORS), but within one foot of the Intermediate Sub-Band. Under current conditions, LORS authorizes USACE to discharge up to 4,000 cfs to the Caloosahatchee (measured at S-77) and up to 1,800 cfs to the St. Lucie (measured at S-80).
“Forecasts indicate more rain is on the way in the coming week,” said Kirk. “Additionally, long-range predictions indicate increasing probabilities of above-average precipitation for the rest of the wet season. We must start aggressively managing the water level to create storage for additional rain in the coming wet season.”
For more information on water level and flows data for Lake Okeechobee, visit the Jacksonville District water management website at http://www.saj.usace.army.mil/Missions/CivilWorks/WaterManagement.aspx.
Release no. 18-034