Franklin Lock and Dam, Navigation lock and dam in Olga, United States.

Franklin Lock and Dam is a concrete lock on the Caloosahatchee River at Olga, about 33 miles upstream from the Gulf Intracoastal Waterway. Its chamber measures 56 feet wide, 400 feet long and 14 feet high, with welded structural steel sector gates, and the lift is usually 2 to 3 feet. The channel through it is 90 feet wide and 8 feet deep.

The lock was completed in 1965 and named after a former mayor of Fort Myers who championed waterway development in the region. It has since become a vital part of local infrastructure for navigation and water management.

The lock is named after Walter P. Franklin (1871–1967), a businessman and mayor of Fort Myers. Boaters announce themselves on Marine VHF radio channel 13 before locking through, and a passage usually takes 15 to 20 minutes. About 15,000 vessels pass each year, roughly 97% of them recreational.

Visitors should arrive during daylight hours to see the lock in operation and watch boats pass through the system. There are viewing areas where you can easily observe the locking process from a good vantage point.

The lock chamber measures 56 feet wide, 400 feet long and 14 feet high, and the lift is usually only 2 to 3 feet. About 15,000 vessels pass through each year, roughly 97% of them recreational, alongside some 13,000 tons of goods. Boaters announce themselves on Marine VHF channel 13.