How to reach:
From the intersection of Vista del Mar Avenue and Highway 1 on the east side of San Simeon, proceed 53.9 km (33.5 mi) NW on Highway 1 to the Sand Dollar Beach recreation area, continue 3.4 km (2.1 mi) NW on Highway 1 to a gravel pulloff on the west side of the highway. Park and continue on foot over a stile over the barbed wire fence and along a dirt trail 0.45 km (0.28 mi) west to the base of Mansfield Cone, climb down the rock scree bluff to a rock ledge at the water line. The bench marks are along the trail leading to Mansfield Cone and on the rock outcrops down near the water on the south side of Mansfield Cone. The tide gauges were located on top of the rock bluff directly below Mansfield Cone and the orifices were attached to a rock outcrop directly below.