Lakes are by far the most common feature of Algonquin, but there are also rivers, streams, a few marshes, and even a waterfall or two. On the rivers, expect to encounter beaver dams. The first few will be amusing, but after that you will start thinking thoughts about stylish fur caps. Their length is typically a few hundred meters. I can categorically state that you will not be having fun during long portages.
Mosquitoes seem to know to congregate at landing sites for portages.
You might consider renting a shoulder harness to help carry the canoe. See also Earth This Project Galactic Guide site owned by Alex McLintock .