Gage zero refers to the gage height above sea level, not height above the riverbed. When you see 17.28 NGVD on the various Corps websites, it means that the sea level reference reading was the National Geodetic Vertical Datum of 1927.
That means the river was 62.04 feet above sea level, not 62.04 feet deep.
Posted on March 20 at 8:34 a.m.
Gage zero refers to the gage height above sea level, not height above the riverbed. When you see 17.28 NGVD on the various Corps websites, it means that the sea level reference reading was the National Geodetic Vertical Datum of 1927.
That means the river was 62.04 feet above sea level, not 62.04 feet deep.
Sounds like your source is confused.
On River level nearing flood stage