NGVDNational Geodetic Vertical Datum
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60 m NGVD at the least muted sites (SL1, 2, 3, and ML), but was virtually absent at elevations of >0.
3 m NGVD measured at Scripp's Pier on 8 August 1983 (MEC, 1993).
To convert NGVD to feet above mean lower low water (as on tide tables), we multiplied by 3.
This is a departure from the current City NGVD 1929 vertical datum.
8 ft NGVD required for the diversion structure control elevation.
Vertical control in OC consists of 1,800 benchmarks on both datums NGVD 88 and NGVD 29.