A. 
All street grades in the city shall be established by reference to the bench mark fixed and established by the United States Geological Survey, the location of which bench mark is in the vestibule of the County Courthouse, at the front door thereof, which courthouse is located on the westerly side of H Street, between Fifth and Sixth Streets. The elevation of such bench mark is 29.447 feet above low tide.
B. 
The bench mark is fixed and established as the city base for the establishing of all elevations.
(Prior code § 12-101)