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Blue River | Colorado

Blue River Colorado Fly Fishing Information

Giant Blue River Rainbow Trout Fly Fishing

The Blue River begins near the town of Breckenridge, where it then flows 10 miles into Dillon Reservoir.  It is then released from the bottom of Lake Dillon’s dam and makes its way 20 miles into Green Mountain Reservoir.  From here it makes it’s way along HWY 9 to the Colorado River.

The Blue River has the ability to grow big trout.  This is largely due to the year-round season and the presence of mysis shrimp.  Mysis shrimp live in Dillon Reservoir and periodically flush out of the bottom of the dam.  Mysis shrimp are pure protein and trout love them.  Mysis are a small semi white and clear shrimp and are the main food source for the fish below the dam.

The Blue River near the Breckenridge area is different from the other stretches of the river.  The Blue is half the size in Breckenridge and is not tailwater controlled.  Average fish size is 10-16 inches and is a mix of brown, rainbow and brook trout.  The fish in this stretch are much more forgiving and is a great place for any fly fisher entering the sport.  The Blue below Green Mountain Reservoir is a trout haven.  This is mainly because of the long stretch of private water that rarely sees pressure.  Fish in this stretch can live a sheltered life from angling pressure.  Access is limited to right below the dam and near the confluence of the Colorado.  The bug life in this lower section is also incredible.  Massive stoneflies and drake can be seen here hatching in the summer.

Blue River Below Dillon Real Time Stream Flows

Blue River Hatches
Summer – Stoneflies, Green Drakes, Pale Morning Duns, Tricos, Terrestrials, Caddis, Yellow Sallies, Red Quills, Midges
Fall – Baetis, Terrestrials, Caddis, Midges
Spring – Blue Winged Olives, Stoneflies, Caddis, Midges
Winter – Midges

Blue River Flies:

Breckenridge Flow Link >>
Silverthorne Flow Link >>
Green Mountain Flow Link >