If you're looking for a longer video on a classic Ontario river, you might want to take a look at this one. It was produced back around 2002/2003 and shows the video quality of the day but it is still a really good documentary on the Petawawa.
Fun footage Rob. Watching them lose all their stuff around the 27min. mark was a good warning, not to mention the bit where the guy is floating downstream and bumps into his canoe.