I stayed in Estes Park last September and fished RMNP. We got skunked. A big cold front came in and the temps dropped 40 degrees over night and it started to snow. Fishing was very very tough. However i enjoyed it alot, so much so i want to go back. We fished all over, roaring river, fall river, glacier creek, big thompson, sprauge lake, and dream lake. we did catch fish, the last day we were there the sun came back out when i was on fall river and i was catching a bunch of browns and a single tiny brookie, which finished my grand slam. Caught greenbacks in dream lake, rainbow in big thompson and i dont know what the deal was but i missed a TON of fish. if i would have hooked each one i missed, i would have been super happy, prolley had caught 30-40 of them the trip instead of 10 or so that i did.