How to reach:
To reach the tidal bench marks from the north bound Baltimore-Washington Expressway (State Highway 295) take the Water View exit east to State Highway 2 (Hanover Street). Proceed north on Hanover Street for 2.4 km (1.5 mi) to Fort Avenue. Turn right and travel east on Fort Avenue for 2.9 km (1.8 mi) to the entrance of Fort McHenry. Turn left onto Wallace Avenue, then right again onto Nimitz Drive, and then left onto Halsey Road to its end. Turn right and continue past a gate to the U.S. Corps of Engineers (COE) compound. The bench marks are located in the U.S. Naval Reserve compound, the COE compound, and on the Fort McHenry grounds. The tide gage and staff are located on the COE pier.