Aerial of the Seven Sister Islands on the St. Johns River

Fast facts

The 18-county district had a population of 5.96 million people as of 2023.
The main water body in the district is the northerly flowing St. Johns River, the longest river entirely in Florida.
Other significant water bodies are the St. Marys, Nassau, Matanzas, Halifax and Ocklawaha rivers and the Indian River Lagoon.
There are 148 known springs and 1,400 lakes in the district.
Counties entirely or partially within the district are Alachua, Baker, Bradford, Brevard, Clay, Duval, Flagler, Indian River, Lake, Marion, Nassau, Okeechobee, Orange, Osceola, Putnam, St. Johns, Seminole and Volusia.
The District currently maintains 115 miles of U.S. Army Corps of Engineers (USACE) / District constructed flood control levees, 175 miles of farm/project levees, 12 major flood control structures, 113 minor water control structures, 25 weirs, and 11 pump stations. In addition, the District maintains 90 miles of canals, more than 1,600 miles of roadways and trails, and three navigational locks.
The District owns or manages 779,725 acres of land (through transfers, donations, fee-simple purchases and less-than-fee acquisitions). The majority of the property is open for the public to enjoy.