# # National Water Information System # 2024/10/03 # # # Date Retrieved: USGS Water Data for the Nation Help System # Code Description 10s 47s ASVD02 American Samoa Vertical Datum of 2002 BARGECANAL New York State Barge Canal datum COE1912 U.S. Corps of Engineers datum adjustment 1912 GUVD04 Guam Vertical Datum of 2004 IGLD International Great Lakes Datum LMSL Local Mean Sea Level MLLW Mean Lower Low Water tidal datum NAVD88 North American Vertical Datum of 1988 NGVD29 National Geodetic Vertical Datum of 1929 NMVD03 Northern Marianas Vertical Datum of 2003 OLDAK Old Alaska (Mainland) and Aleutian Island Datum OLDPR Old Puerto Rico and Virgin Island Datum PRVD02 Puerto Rico Vertical Datum of 2002 VIVD09 Virgin Islands Vertical Datum of 2009