Herbert is a great day trip worth the drive. I ran this a few times last year. I do’t have current beta so expect some changes due to rock shifts and wood forming. I don’t think I will have to time to post a better report before leaving for the summer. So here is “better than nothing”.
I have not run this river yet this year. Expect wood, and be ready for it.
It was pretty flooded/pushing when we ran it. Walking trail and put in right bellow glacier. River right of island was no go-log jam, river left went. Pretty clear of wood for a bit longer, then things start to get steep. There was a long series of class III IV. I think at lower water it would be II-ish. Similar feel to Eagle River. At low flow watch for undercut rocks and possible foot entrapment. Those rapids end and the river turns left, a big pool had formed just past the turn left. A steep rapid leads into a short gentle section, then another supper steep rapid that takes you under a foot bridge. There is a big eddy on river right just after bridge. River wide log jam just past eddy. Make sure you pull out after this bridge. Walk the fishing trail over the bridge and put in just down river. Rest is pretty chill, a couple splashes but mostly just moving around wood. When we ran it water was high enough that we could just scoot around trees, at lower levels it may be river wide, so practice some caution here, there may be dragons.