58
BENEFITS
OF NAVD 88
(CONTINUED)
(CONTINUED)
Detection and Removal of height errors due to blunders
Minimization of effects of systematic
errors in leveling data
Replacement of both NGVD 29 and IGLD 55
with a single datum
Remonumentation and incorporation of 80,000 km of new leveling data not previously adjusted to NGVD 29
Orthometric Heights compatible with GPS-Derived Orthometric Heights computed using the High-Resolution
Geoid Model called Geoid99
