Glad to hear the info is helpful , my nike altimeter watch is +- 200 ft depending on barometric pessure , I dont update the watch to current baro press.
The TH is approx 6700 ft , where we camped is 8700 ft, to the left above the springs... the sheltered areas next to Watkins , I assume its 9300 ft . Took us less than 3 hours to campsite ,probably 2.5-3 miles ,great veiws of the canyon on the left, parallel with trail.
Didnt see any running water around Watkins Glacier , the springs is your best bet , fill up there , crystal clear , however we didnt boil it but we survived ! LOL I know its ideal to camp higher but I think you have to be at least 10K for a longer duration of time to really acclimate, so we drank LOTS of water to help ,also an aspirin helps thin the blood out in the am before heading up.
Also on the annual pass, its good for a whole year from date of purchase ,not Dec 31st. Under 16 yo ,no summit pass required . I want to try skiing Clear Creek next May/June , terrain looks awesome. I am leaving for HB Ridge in the am, should be fun on the ice ....Have a great time !