How to reach:
To reach the tidal bench marks from the Guam International Airport, exit the airport and turn right (north) on Highway 10A, follow it to the intersection with Highway 16 and turn right, follow 16 to the intersection with Highway 10 and turn left, follow 10 to the turn off for Highway 32 and turn left. Highway 32 will take you onto the campus of the University of Guam, stay on it past the main campus buildings to a three way stop, continue straight, and down a steep hill, to the Marine Laboratory building. The tidal bench marks are located on the University of Guam property. The tide gauge instruments are located on the east wall of room 104, in the lower level of the Marine Lab.