Includes charts for all Great Lakes.

ArcGIS StoryMap featuring history and facts about the Great Lakes.

"While strict observance of these courses is recommended for all Masters, Navigating Officers of the Watch, and their vessels in the interest of safety, these are “recommended” and “voluntary” lake courses. They are recognized by government agencies and are delineated on general and other charts of the Great Lakes."

Individual maps are included for the following (scroll down page): Lake Huron and Erie, Lake Ontario, Lake Michigan and Lake Superior.

From the creators: "This series of river maps is done up in a style inspired by urban transit maps such as those pioneered by Harry Beck in the 1930s for the London Underground. Straight lines, 45-degree angles, simple geometry. The result is more of an abstract network representation than you would find on most maps, and it’s not meant to be taken too seriously — I would not recommend actually transiting through these rivers, as many portions of them are not navigable. But they do, nonetheless, connect us."