152 Table 9. Area of swamps and marshes on general highway maps of Collier, Hendry, and Lee counties. County Major Wetland Acres Colliera 820,000 Hendryb 240,000 Leec 90,000 Corkscrew 60,000 Okaloacoochee 90,000 Fahkahatchee 30,000 Big Cypress 620,000 Total 1,150,000 800,000 aApril 1966 june 1969 June 1971