I actually ran this 10 mile run on Fri. Jun 28th and Sat. Jun 29th, both at around 700 when taking off flows coming in from Muddy creek. The run is located about 10 miles up Kebler pass going to Crested Butte, then turn into Erickson Springs campround and go all the way back to the trailhead to parking area. The overall character of this fantastic class II+ to III run is non-stop small waves with small sections of real fun larger rapids, nothing over class III. About half way down the run is a mandatory portage due to a riverwide spruce at river level. It is easy to see and easy portage on left side. The shallow nature of the creek does make you pay attention to following the main flow of water it splits apart in many sections going around islands. This big creek has become my second favorite run of all time. There is total solitude, great campground, no crowds, great hiking right there, and non-stop waves in a very clean creek bed. I believe this might still go good all the way down to 500 at the North Fork at Sommerset guage, maybe lower.