It is a big water and worth an introduction with local expertise. Although not as plentiful as the Fork or the Pan, the trout in the Colorado are big river fish. Since the completion of Wolford reservoir and the I-70 Glenwood canyon, the Colorado river is clearer and is more fishable year round.
There are a variety of hatches from midges, drakes, bwos, yellow sallies, PMD's, stoneflies and caddis.
We start fishing from the Grizzly put in all the way down to Rifle. In the heat of summer, the river improves below the confluence with the Roaring Fork if it is flowing well because of the colder water it adds.
Down lower the Colorado opens out and the sun gets on to the water.
The big secret about the Colorado is the quality of the fishing as a result of a serious stocking program undertaken by the DOW. They have introduced hofers and other big rainbows into the river which together with the very big browns which live there have made for an excellent fishery.
Ed in March 2010 on the Colorado
For discussions of the various seasons see as follows: