Re: Cache la Poudre River, Fort Collins?
Your closest places to get a line wet are west of Cheyenne: North Crow Diversion is filled with stockers, Granite, Crystal, and North Crow Res. have some 10-15 inch fish with occasional bigs, but I've actually recommend spinning tackle for all those. In the same area of Vedauwoo you can find many beaver ponds with beautiful brookies they just don't get too big. Then further west of Laramie are the fishable rivers you'll probably be most interested in for fly fishing: French creek, N. Platte, and Douglas Creek are typical freestones. The North Platte is fishable from the headwaters in Colorado through Saratoga/Seminole/Alcova/Casper before it starts to turn into catfish water by the time it gets to the Nebraska boarder northeast of Cheyenne.
Poudre and Big T are your options to the south before having to go through Denver. Also the St. Vrain.