The Boca Raton inlet is classic example of the constant migration of sand southward along the Florida coast. As the Gulf Stream, the largest river on earth, moves north just offshore there is a counter current of one-half to one knot moving south. So jetties have a tendency to build sand along their north edge and lose sand along their southern end.

The Boca inlet has been recently dredged and the entrance is much better than it was. The current is considerable and there is a draw bridge that must be traversed. Sailor running this inlet with a following current should exercise caution so they are not swept into the bridge.

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