The ecosystems associated with this district include marshes, dwarf cypress, prairies, rocklands, and mangroves. Soils are sand, clay, limestone, and organic deposits. The ecosystems associated with this district include pine flatwoods, prairies, cypress ponds, mangroves, and dunes. It is a sandhill karst terrain with many solution basins. The permeable sands and rapid internal drainage of this region make it the principal recharge area of the Florida aquifer.
Soils are sand, clay, and organic deposits.
The ecosystems associated with this district include sandhills and sand pine scrub. It is located in northwestern quarter of the Florida peninsula and extends north-northwest to the eastern side of the Panhandle. The landscapes include rolling karst plains, stream-sculptured hills, flats, swamps, and sandhills. The karst plain in the central part of the district grades to sandy flatwoods toward the west and south. The northern part of the district is upland with moderate to high clay content in the soil.