I don't know what it's running right now, but low water runs are very swiss cheesey. There has been a bunch of posts about this run on the Buzz, but they were a couple years ago. There is a guy named Atom who has taken lots of CO boaters down the upper box. He is the MAN when it comes to this run. I ran it a couple years ago with him and it would have been a freakin' muti-day trip if we couldn't have followed him. It isn't too hard a low flows, just the most sieved out run I've ever seen. Very hard to boat scout everything. I suggest trying to get a hold of Atom, from Taos, or Badkins, from the front range area (I think he was with Atom last spring). I don't mean to discourage you at all. You just should know that this is a tough river to navigate from your boat at a low flow. One drop through the wrong slot could mean bad news.