This past summer, I took my kids to the Animas River in Durango. They caught several 10-14 inch rainbows. They had a better time at Groundhog Lake a about 1.5 hours north of Durango. 16" or so was the average - for both cutthroats and rainbows. There was a lot of top water action!
Please forgive my younger son's goofy look. He was trying to do a Lee24 impression.
RH