The Blue River below Green Mountain Reservoir is a classic Colorado tailwater known for its clear flows, consistent temperatures, and thriving trout population.
The Blue River below Green Mountain Reservoir is a hidden gem in the Colorado fly fishing scene, especially during the winter months. With fewer crowds and tranquil surroundings, this stretch of river offers a peaceful retreat for anglers willing to brave the cold. The crisp mountain air, coupled with the chance to hook into some sizable brown and rainbow trout, makes this a spot worth visiting.
Winter conditions mean technical fishing is key, as low flows and gin-clear water demand stealth and precision. Target the deeper pools and slower runs where trout are conserving energy, and don’t be afraid to switch flies often to match their picky appetites. It's a challenge, but the rewards can be spectacular.
| Month | Primary Hatches | Effective Patterns |
|---|---|---|
| December | Midges | Zebra Midge (#20-24), Mercury Midge (#20-22) |
| January | Midges | Black Beauty (#20-24), Top Secret Midge (#20-22) |
| February | Midges, Baetis | Blue Wing Olive Emerger (#18-22), WD-40 (#20-22) |
Winter fishing requires patience. Focus on deeper pools and seams where trout are holding, and keep presentations subtle and natural.
Dry fly opportunities are rare but possible on sunny afternoons when midges are hatching.
A two-fly rig with a small midge pattern and a split shot to get deep is your best setup. Adjust weights frequently to keep flies in the strike zone.
Slowly strip streamers through deeper runs and undercut banks for a shot at larger, predatory trout.
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.