Man you boys have been livin in a hole all units in Colorado have been "high" units for a couple of year now.. LOL pun intended!
Best way is to find them for yourself... Here is a tip we have something called the continental divide runs north to south across the entire state and fair to say it is pry pretty high up along the continental divide - like higher than most places in the USA. Or at the very tippie top of the mountains water flows one of 2 directions but always down hill! Another tip is to look for river drainage or.. The major drainages are S Platte, N Platte, Yampa, Colorado, Gunnison, Dolores, Arkansas, and Rio Grande. Again water will flow one of 2 ways... Or ya look at a topo map and the numbers get "higher" as you go up look for numbers like 12,000, 13,000 or even 14,000 would fair to say be "high".
Good luck on your hunt to get high.