Continental divides define watersheds and can be found on every continent except Antarctica. The Great Divide, which stretches from Alaska through the Rockies into Mexico, and eventually along the Andes in South America, is the best known continental divide in North America, however, it’s not the only one. This map shows the various divides and their watersheds.
The green line, the Laurentian Divide, defines the watershed for Hudson Bay, meaning all rivers within the region eventually drain into the big northern bay. As you can see this includes all of Manitoba, most of Saskatchewan, some of Alberta, northern Ontario and Quebec, and ends up defining the western border of Labrador. Everything south of this line flows into the Gulf of Mexico via the Mississippi River. Several sacred places in Saskatchewan are located on the continental divide.
There are few drives I enjoy more than through the hills and gullies of the Missouri Coteau in southern Saskatchewan. The climbs are steep and the valleys deep with lots of blind hills that make you feel like you are flying. The highways generally are poor but passable with little shoulder and weeds window high right next to the road. On a recent journey through the Coteau I stopped on the Laurentian Continental Divide just south of Assiniboia and created this video report that’s less than 2 minutes long.