Due to system maintenance, access to the Geographic Names Information System and the GNIS download files will
be unavailable beginning 3 pm Mountain Time July 29 through 31. Systems will be available Monday morning,
Information about undersea feature names and the Advisory
Committee on Undersea Features of the U.S. Board on Geographic
Names can be obtained from the GEOnet
Names Server (GNS), developed and maintained by the National
Geospatial-Intelligence Agency (NGA).