The U.S. Army Corps of Engineers has finalized a key report that authorizes additional rehabilitation work on the Herbert Hoover Dike that surrounds Lake Okeechobee in south Florida. The Corps’ Jacksonville District received notification Tuesday (Aug. 30) that the dam safety modification report for the dike has been approved, marking the culmination of a four-year effort to conduct a risk assessment of the 143-mile earthen structure and develop alternatives for its rehabilitation.