How to reach:
To reach the tidal bench marks from the intersection of I-95 and Route 22 in Aberdeen, proceed east on Route 22 for 4.8 km (3.0 mi) to the main gate of Aberdeen Proving Grounds, continue on Route 22 (Harford Boulevard) for 1.4 km (0.9 mi), then turn right on Maryland Boulevard and go 0.3 km (0.2 mi), then turn left on Aberdeen Boulevard and go 2.3 km (1.4 mi) to a firehouse, bear left at split in the road and continue 0.5 km (0.3 mi) to the AMSAA/ARL building on the left. Pick up visitor's badges at the visitor's desk and proceed to the UNDEX test pond with APG escort. The bench marks are located in the vicinity of the test pond. The tide gage was located at the SW end of the concrete dock at the barge basin.