The Blue River below Green Mountain Reservoir is a classic Colorado tailwater known for its clear flows, consistent temperatures, and thriving trout population. Flowing through rugged canyons and picturesque valleys, this stretch of the Blue offers anglers excellent opportunities to target wild rainbows and browns in a tranquil, scenic setting.
The Blue River near Green Mountain Reservoir remains a winter haven for fly anglers seeking solitude and striking scenery. While flows are on the lower side, the clear and cold water sets the stage for technical fishing. With trout concentrated in deeper runs and pools, precise nymphing is the name of the game. This section is a treat for anglers who love a challenge and don’t mind bundling up against the chill.
Dry fly activity is sparse in the winter, but nymphing rigs with small midges and Blue Wing Olive patterns are performing well. Streamers can still coax the occasional aggressive bite, particularly from larger trout looking for an easy meal. Dress warmly, pack some hand warmers, and get ready for a rewarding day on the water.
| Month | Primary Hatches | Effective Patterns |
|---|---|---|
| December | Midges, BWOs | Zebra Midge (#20-24), Blue Wing Olive Emerger (#18-22) |
| January | Midges | Black Beauty (#20-24), WD-40 (#20-22) |
| February | Midges, BWOs | Top Secret Midge (#20-22), Parachute Adams (#18-20) |
Focus on slower water and deeper runs where trout conserve energy during the colder months.
Opportunities are limited, but keep an eye out for sporadic midge hatches on warmer days. Use small, delicate presentations.
Run a tandem rig with a Zebra Midge and Blue Wing Olive nymph. Adjust your indicator depth frequently to find where the fish are holding.
Smaller streamers stripped slowly through pools can entice larger fish. Olive and black patterns are particularly effective.
The Blue River near Green Mountain Reservoir features public access points, but be aware of private property boundaries. A valid Colorado fishing license is required, and catch-and-release practices are encouraged to maintain the fishery.