A few of the reasons why

**NAVD**88 is more accurate than its predecessor is that it includes adjustments for observed gravity, 1,001,500 (km) of land was leveled, and 450,000 benchmarks were created. In contrast, the process for calculating**NAVD**29 included only 106,724 (km) of leveling and 100,000 benchmarks.The elevation in NAVD 88 would be:

**54.2 + -0.609 = 53.5**91 or 53.6 ft. Remember, if you add a negative number to the existing elevation, the resulting elevation will be a lower number. In the second example, the conversion factor for Arroyo Seco is 2.99. So for a structure affected by flooding from Arroyo Seco, the elevation in NAVD 88 would be:People also ask

What is the elevation of NAVD 88?

What is the conversion factor for NAVD 88?

What is a vertical datum?

What is the North American vertical datum?

Using a fixed reference point as a baseline (i.e., a zero

**elevation**point),**elevation**values can be consistently measured and**compared**among various maps and surveys. The North American Vertical Datum of 1988 (**NAVD**88) is the official vertical datum of the United States, having superseded the older National Geodetic Vertical Datum of 1929 (NGVD ...The elevation in NAVD 88 would be:

**54.2 + -0.609 = 53.5**91 or 53.6 ft. Remember, if you add a negative number to the existing elevation, the resulting elevation will be a lower number. In the second example, the conversion factor for Arroyo Seco is 2.99. So for a structure affected by flooding from Arroyo Seco, the elevation in NAVD 88 would be:- 885KB

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Anyone who uses

**elevation**information in Broward County needs to know about, understand and apply the new measuring standards. A conversion application is available so that users can readily convert**elevation**data from**NAVD**88 to NGVD 29, and vice versa. You are able to**compare**“apples to apples” using the free conversion software VERTCON.The upgrade to

**NAVD**88 means that the values we associate with the**height**of water – what many people think of as mean sea level – will change. Within the SFWMD boundaries, measurements of water levels in**NAVD**88 will be approximately -0.6 feet to -1.8 feet lower than they are in NGVD 29, as**elevation**difference varies by geographic location.The product refers to an altitude or an

**elevation**(orthometric**height**). State the vertical datum name and year in that document. Example: "Vertical coordinate information is referenced to the North American Vertical Datum of 1988 (**NAVD**88)."Dec 01, 2019 · Base Flood

**Elevation**Definition (BFE) The Base Flood**Elevation**is the**elevation**of flood water rise during the “base flood”. These**elevations**are indicated per location within a flood zone on the Flood Insurance Rate Maps or FIRMS. The BFE is used in determining the appropriate Design Flood**Elevation**for new construction.Within the boundaries of the District, the

**NAVD**88**elevation**number is a shift of approximately 0.7 to 1.1 feet lower that the**elevation**in the NGVD 29 standard. This variation is due to geographical differences. For example, a water level for Lake Panasoffkee of 39.24 feet in NGVD 29 will be 38.36 in the**NAVD**88 standard.