How to reach:
To reach the tidal bench marks from the intersection of U.S. Highway 90 and State Road 23 in Gretna, proceed south on State Road 23 for 121 km (75 mi) to Venice, then through Venice for 1.3 km (0.8 mi) to Elhzys Marine where public launch facilities are available. Proceed by boat south on the Mississippi River for 15.8 km (8.5 nm) to Pass-A-Loutre, then east on Pass-A-Loutre and North Pass for 23 km (12 nm) to the Chevron Oil Company facility on the north shore of North Pass. The bench marks are located inside a dike surrounding seven fuel tanks. The tide station was located on the west end of the oil company pier beside the workers living quarters.