we were in the bozeman and missoula areas week before last. saw a couple of guys on the gallatin near the lava lake trailhead area. it looked low but doable if you chose your lines decent enough. above and below there it widened out quite a bit. the raft companies were still running trips, so a hard boat should be able to make it.
By the waterside I will lay my head.
Listen to the river sing sweet songs to rock my soul.