44
NORTH
AMERICALN VERTICAL DATUM
OF 1988 (NAVD 88)
OF 1988 (NAVD 88)
THE U.S.
PORTION OF THE PROJECT INCLUDED THE REMONUMENTATION AND REOBSERVATION OF AN 80,000 KILOMETER SUBSET OF THE VERTICAL CONTROL
PORTION OF THE
NATIONAL SPATIAL REFERENCE SYSTEM.
A MINIMUM-CONSTRAINT LEAST SQUARES ADJUSTMENT
OF
LEVELING DATA INVOLVING 709,000 MARKS WAS PERFORMED.
