i was west of fort Collins early last week and they were spawning there. the lake sits at about 11,500 feet for reference.
i also went to a lake just east of winter park yesterday and i didn't see them spawning at the inlet but the fish i did see were just cruising, they weren't rising at all on the lake and i couldn't get them to take any sort of wet or dry flies so i dont really know if they were pre or post spawn. and that lake sits at 11,900 feet.
hopefully this helps a little. let us know how you did if you do go up.
Reply by: bron Posted: 7/16/2017 6:17:40 PM Points: 16348
Ive had 2 trips above 10000' in the last 3 weeks and it seemed like the cutties I caught were at the tail end of the spawn. We caught alot of fish but I only got egged one time. It seems like it has happened early this year.
Reply by: Chad L. Posted: 7/16/2017 6:50:22 PM Points: 26
Good to know guys. Also glad to see guys getting up there for those fish. They look great as far as colors but it stinks seeing 30 fish in 6 inches of water, or 20 tails out the back of a submerged log.