Trappe River Dells

The only significant drop on this river, and it can be quite a doozy. With any reasonably boatable flow, you will probably want to scout, and many will be likely to portage! (Low-water, maybe just class II-II+, higher water class III possibly pushing very nearly class IV-.) The river drops 20' in a relatively short distance, through a fairly complex boulder-bed and bedrock drop.

Some maps may show this area as "Trappe River Dells County Park". From a Marathon County brochure:

"Trappe River Dells Park – Located in the Town of Texas, this undeveloped park consists of 80 acres of woods. It is not accessible from other  public lands or roads. The County has no current plans to develop the woods into a functioning park. Rather, it will remain as a passive open space."