Apalachicola Reserve, Florida

Tidal Range

Apalachicola Bay is in an area of transition between the semidiurnal tides of southwest Florida and the diurnal tides of northwest Florida. Its tides are, therefore, classified as mixed tides, which accounts for the number of tides, ranging from 1 to 5 daily. The normal tidal range in the bay is one to two feet with a maximum range of three feet.


River Flow

The mean annual discharge of the river is approximately 25,000 cubic feet per second (cfs) 21 miles upriver, which includes the discharge of the Chipola River. Minimum and maximum flows average 6,000 cfs and 200,000 cfs respectively, though yearly flows vary considerably. Apalachicola River discharge accounts for 35 percent of the total fresh water runoff from the west coast of Florida.

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