Sea-level Elevations - Online Data
Sea-level Elevations - Online Data
(OP)
Does anyone know of an online program that provides building elevations relative to sea level and/or building heights to local grade - preferably at no cost, and if possible, including the capability to locate heights of roof areas at different locations ?






RE: Sea-level Elevations - Online Data
for more accuracy you will need to hire a surveyor
in the US, most surveys are not relative to sea level anymore, that was replaced in 1929 and again in 1988 with national datum's. Only a few local communities still use mean sea level and since the sea level is rising, that is a moving target.
National Geodetic Vertical Datum of 1929 (NGVD29)
North American Vertical Datum of 1988 (NAVD 88)
RE: Sea-level Elevations - Online Data
RE: Sea-level Elevations - Online Data