St. Marys River flows into the northern tip of Cumberland Sound and the path of the AICW, just north of Fernandina, FL, and serves as the coastal state line between Georgia and Florida. The town of St. Marys is an easy trip up the St. Marys River, departing the Waterway at flashing green marker #29, statute mile 713.
GEORGIA AND FLORIDA-ST MARYS RIVER: Temporary Aton Established.
Due to shoaling, St Marys River Temporary Buoy 6A has been established in position 30-42-51.900N 081-32-00.600W. Mariners are advised to exercise caution while transiting the area.