Falling out of the eastern front of the Bitterroots just north of Hamilton, Bear Creek is the best and highest quality class V creek that can be run after work by Missoula boaters.
However, despite the high quality of this section, three factors combine to make Bear a rather infrequently run creek. First, a fairly long hike in and out makes every run something of a mission. Second, the rapids are stacked and the back to back nature with lots of wood consequences means Bear has a high intimidation factor. Third, no good correlations with any online gauges means that you have to drive to the trailhead to check the level...and with the flashy nature of this creek, it can be difficult to find ideal flows.
Just over a mile above the trailhead, you come to the last commonly run rapid on the creek: Brave Bear. Take a look from here, realizing that you can scout much better from creek level on the other side when you get down there, and continue up the trail for a little over a mile. If you get to a point where you can see snowy peaks upstream and the valley floor below you, you have gone too far.
The first rapid, which some have been calling The Big Easy, and others just "The Put In" is a long, multi-tiered slide that is guaranteed to leave you grinning. Watch out of the undercut boulder at the bottom on the left...and if the move here looks too intimidating, the level might be too high.
Jason Schroeder, visiting from Hood River, two strokes into his first time paddling in Montana.

And wishing he was a little further right at the bottom. The logs on the right are sticking in the undercut boulder, and are actually helping the situation right now.

Below here is a quick portage of a river wide old growth log that could be there for years, then a sweet bouldery, wood filled barfight called, simply, the Gnar. It runs better than it looks, and leads into Airplane, a sweet banking slide that is a lot bigger than it looks here.

Catch the eddy immediately below Airplane and see if Log Drop is clean. Currently, it is not (see behind Ben), and this necessitates a seal launch into the slide in the second half of this cool and unique rapid (you kind of have to see it to understand).

Bottom of Log Drop.

Some bouldery drops lead to the Tijuana Crack Whore, one of the signature Bear rapids. Here, a technical boulder drop dumps onto a low angle banking slide, which turns left and drops down into a very narrow crack. Elbow pads recommended. Here is Nic Cole in the entry.

And Schroeder, droppin' in to the filthy part.

EJ Etherington getting kinky in the crack (photo Ben Litz)

And Ben Litz showing how it's done at low water. You can clearly see the crack on his left. (Photo EJ Etherington)

Ben Litz in the runout.

Random slide.

Another random slide above Hotel California...with Ben going one round with a hole.

Below the sticky hole backed up with wood known as Hotel California (you can check in anytime you like...etc), an easy portage on river left brings you to the brink of the granddaddy of Bitterroot rapids: Brave Bear. The Brave one is a combo of ledge to slide to pillow to slide to ledge to...well, you get the idea. It's big and awesome.
Here are Ben and Nick, checking out the pillow move and the top part of the rapid.

Author demonstrating poor form "It's GOOD!" on the entry.

Pillow rides...not just for the bedroom anymore.

(courtesy EJ Etherington, thisriverlife.blogspot.com)
Ben trying to get left below the pillow. This may be the crux move...a boof into a big seam.

And for scale...in the runout, with the lower half of Brave Bear visible above.

Below here, it sort of looks good. But it is manky, wood filled, and hauling ass. Many teams have attempted to continue below here, few have gotten far.

Flows: Picture of the gauge rock, coming soon.