How to reach:
To reach the tidal bench marks from the east end of the U.S. Highway 17 bridge over Cooper River in Mt. Pleasant, proceed north on U.S. Highway 17 for 12.1 km (7.5 mi) to Hamlin Drive (S-10-504), then turn right and proceed SE on Hamlin Drive for 1.8 km (1.1 mi) to the entrance to Old Hamlin Farms, then turn right onto the dirt driveway and proceed 0.3 km (0.2 mi) to the O.D. Hamlin residence. The bench marks are along the dirt driveway leading to the residence. The tide gage and staff were on the Hamlin private pier.