How to reach: To reach the tidal bench marks from the intersection of State Routes 3 and 14 (Exit 11 on State Route 3), proceed east on State Route 14 for 1.1 km (0.7 mi) to State Route 139, then continue west on State Route 139 for 7.2 km (4.5 mi) to Town Pier Road, then turn right and proceed SE for 1.1 km (0.7 mi) on Town Pier Road to the Brant Rock Town Pier. The bench marks are near the town pier, along State Route 139 at the bridge over Green River Harbor, and along the ocean sea wall in Brant Rock (near the intersection of State Route 139 and Ocean Street). The tide guage and staff were located near the midpoint of the Brant Rock Town Pier.
