 The last navigation improvements at Fort Pierce were authorized by the U.S. Congress in the Water Resources Development Act of 1988 dated November 17, 1988 and construction was completed in August 1996.The existing entrance channel is 400 feet wide and 30 feet deep, the interior channel is 250 feet wide and 28 feet deep, the existing turning basin is 1,100 feet square and 28 feet deep, and the north access channel is located immediately north of the main turning basin is 1,250 feet long, 250 feet wide and 28 feet deep.In late 2014 dredging efforts were completed in Fort Pierce Harbor.