47
NORTH
AMERICAN VERTICAL DATUM
OF 1988 (NAVD 88)
OF 1988 (NAVD 88)
NAVD 88 DOES NOT CONTAIN USGS, COE, OR STATE DOT THIRD-ORDER LEVELING DATA.
USGS PERSONNEL HAVE PERFORMED PILOT STUDIES
TO DETERMINE HOW TO BEST INCORPORATE THEIR THIRD-ORDER DATA INTO NAVD 88
(ABOUT A 5-10 YEAR PROGRAM)
