I just wanted to set the record straight on the previous report.
"This is a spot called The Factory Rapids. It is the remnants of a dam that has since been washed out over many many years. I'm pretty sure that it was built by a stone quarry before the river was protected by the DNR. I will post a link to the official river maps that points this particular spot out. On these maps it says that it is impassable, THIS IS NOT TRUE. I was told that the maps were made before the dam washed out and are not current. You can portage very easily on the left bank (north) if you don't want to run it. Upon a quick look, we did it."
This is not a broken dam, it is natural rock formations from the natural water flow! It is very beautiful! I have never seen a map say that it is impassable, and you can not portage it in higher water levels.
It is a fun section to paddle. Factory Rapids is named after the sand factory that sits high above it on the bluff. The factory has nothing to do with the river other than being its name sake.
It is best to either do your research before you go or go with someone who has done it before.
Here are some informative links: