I was debating going fishing today on the Clark Fork and was glad that I didn't. I headed down to the river with Cameron and a few other friends to check out the ice flows. It was literally a giant slushy. There were lots of ice chunks and there was quite a bit of ice build up on the banks of the river. Not sure how it is upstream, but I think its probably pretty similar and probably tough to fish in. Until the ice chunks stop flowing, there won't be any fishing for me.