I fished that area only once (last August, week prior to Labor Day), so I am no expert by any stretch, but I'll share what I learned.
1) You've got three (3) major rivers
; Taylor River, East River, and Gunnison River to choose from... but there are other (smaller) streams with wild fish as well. Access can be a bit tricky on all... which brings me to #2.
2) Check in at the Orvis shop in Almont
(right where the three rivers come together)... spend some money, and look for an older gent named Dennis. The dude is an expert on the Taylor River and has a special midge pattern (D's Midge). Dennis is a top notch guy, and ties flies for Charlie Craven's shop near Denver, CO. Seriously, if you're a fly tyer make sure you look this guy up!
3) If you're lucky, the Kokanee Salmon
will be up into the Gunnison and East Rivers. If they are, fish a Mickey Finn streamer in the deep holes and HANG ON!
4) The area below Taylor Dam is home to some truly gigantic Rainbow Trout. The Mysis Shrimp
that wash through the gates are a major part of their diet... make sure you have proper patterns.
5) The fish below Taylor Dam also see massive amounts of pressure
. As a result they are very conditioned to "typical" patterns and approaches... leave the beadhead's in your fly box.
6) Make sure you fish right up until dark
. These rivers run clear and bright with anglers, mink, and osprey all well represented. I did the most damage during "happy hour" fishing the banks with soft hackles down and across. Runs that were devoid of fish all day come alive when the shadows get long.
7) Great steak house
right on main street in downtown Gunnison... I don't recall the name, but ask the guys at the fly shop in Almont.
That's all I got. Our trip planned for this year fell apart... so I'll have to live vicariously through you.