BTW, I wouldn't do anything in tha San Isabel drainage at this time of year. The trail in there is barely maintained and doesn't get much foot traffic. The first mile of that trail crosses the creek 5 times, all of them with no bridge. With high water it would totally suck. The Rito Alto Drainage is much deeper inset, and has a lot more trees compared to the N Crestone drainage. I think your looking at a snowlevel in there around 10,000-ft. I wouldn't do it this time of year. We took a trip of the Rito Alto the 3rd week of June last year and I remember the upper tree covered areas close to Rito Alto Peak still showing intermitant snow.