Yeah - if it's below 300cfs then it's not worth going all the way from 4mile, in my opinion. Maybe 275 bare minimum? However, Buttress rapid is still fun at lower levels. We used to put in immediately above Buttress, just after the bike path tunnel there's a couple of nice eddies. I've run Buttress down to 180 and still had fun. However, below 250, the little unnamed zig-zag rapid that is a few hundred yards below Buttress (not the second half of buttress, which also has a zig-zag) that thing can get tricky at lower water. Nothing life threatening, but it can get annoying, lots of annoyning broach spots there.
Does this condom make me look fat?