File:Lake Huron bathymetry map 2.pngThe same map but shaded: Lake Huron bathymetry map.png Attribution (in addition to the author of this map): The NGDC in it's copyright notice says: As
File:Lake Ontario bathymetry map 2.pngauthor of the work and Great Lakes Bathymetry and GLOBE (see above and the Source section) You are free: to share – to copy, distribute and transmit the work
File:Great Lakes bathymetry map 2.pngauthor of the work and Great Lakes Bathymetry and GLOBE (see above and the Source section) You are free: to share – to copy, distribute and transmit the work