USGS Catalog http://geoport.whoi.edu/thredds/gom_bathy.html


Dataset Size Last Modified
     Folder  Gulf of Maine Digital Elevation Models (DEMs)   --
         USGS Gulf of Maine DEM (15 arc sec)   --
         USGS Gulf of Maine DEM (3 arc sec) V1.0   --

THREDDS at USGS WHCMSC see Info
THREDDS Data Server [Version 4.6.13 - 2019-02-12T05:56:39-0700] Documentation