Fishing Report: Blue River in Silverthorne

The Blue River near Silverthorne is a catch-and-release fishery, and anglers are encouraged to use barbless hooks. Respect the private property boundaries along certain sections and use designated public access points. Always carry a valid Colorado fishing license and practice responsible fishing to protect this unique tailwater environment.

Flowing out of Dillon Reservoir, the Blue River is a well-known tailwater fishery prized for its cold, clear waters and large, wary trout. Below the dam, you'll find trophy-sized rainbow and brown trout, with the best fishing happening in the afternoons as the water warms slightly. Mysis Shrimp and midges are staple food sources, and precise presentations with light tippets are critical.

The river has excellent access points near Silverthorne and Green Mountain Reservoir, with challenging yet rewarding fishing for those willing to put in the effort. Nymphing and small midge patterns are most effective, with occasional streamer action in deeper pools. The Blue River operates under Gold Medal regulations, requiring catch-and-release for certain stretches.

Blue River Near Silverthorne Fishing Report – November 2024

The Blue River below Dillon Reservoir near Silverthorne is a classic tailwater fishery, offering consistent flows and cold, clear water, even as temperatures drop in November. This stretch is prime for sight fishing, with trout actively feeding, especially on midges and Blue Wing Olives. The river’s unique, chalky-blue color from the reservoir makes it an eye-catching place to fish, with a backdrop of snow-capped mountains adding to the appeal.

For those willing to brave the chill, this is an angler’s dream—especially since trout here are accustomed to small nymphs and emergers. Mid-morning to mid-afternoon provides the best action, and precise presentations with small patterns will yield the best results. The Blue’s trout are known for their selectivity, but with the right flies and a stealthy approach, you’re in for a rewarding day.

Conditions Summary

• Flow Rate: Approximately 90-100 CFS
• Water Temperature: 40-45°F
• Clarity: Slightly milky (standard tailwater clarity)
• Best Times: Mid-morning to mid-afternoon

River Flow Chart

For real-time data on river conditions, visit the Colorado Division of Water Resources.

Blue River Hatch Chart

Top 3 Flies for the Week

• Dry Fly: Blue Wing Olive (#18-22) – Effective during midday hatches, especially in calmer water near banks.
• Nymph: Zebra Midge (#20-24) – Ideal for the Blue’s clear waters, especially in riffles and tailouts.
• Streamer: Mini Leech (#12-14) – Works well in deeper pools and along undercut banks; slow retrieves are best.

Tips Fly Fishing on the Blue River

Seasonal Tip
November trout are still active, but cooler temperatures mean they’re conserving energy. Focus on the warmer part of the day for the most active fish, especially in tailouts and riffles.

Dry Fly
Mid-morning BWOs are your best bet for dry fly action. Try a Blue Wing Olive in size 18-22 and target trout rising in slower pools and seams.

Nymphing
A two-fly nymph rig with a Zebra Midge and small Baetis nymph works well. Use light tippet and look for feeding trout in riffles and deeper runs.

Streamer Fishing
Mini leeches or small woolly buggers can be deadly in November. Use a slow, steady retrieve in deeper sections or along undercut banks for the best results.

Access Points

Silverthorne Outlet Section (Below Dillon Reservoir)

• Description: Popular access with easy entry points directly below the dam offers great sight-fishing opportunities.

• Why Fish Here: Known for its large tailwater trout, thanks to the Mysis shrimp drift from the reservoir.

• Location: [Google Maps link here]

• Locals’ Rating: ⭐⭐⭐⭐⭐.

Silverthorne Town Section

• Description: Provides access along the Blue River Trail through Silverthorne, with multiple points to reach the river.
• Why Fish Here: Conveniently located in town, offering quality fishing in a more urban setting.
• Location: [Google Maps link here]
• Locals’ Rating: ⭐⭐⭐⭐

Blue River Plaza

• Description: A scenic area within the town with riffles and pockets of holding water.
• Why Fish Here: Great for a quick session and often productive for midges and BWOs in fall.
• Location: [Google Maps link here]
• Locals’ Rating: ⭐⭐⭐⭐
  
  

   

Local Regulations and Notes on Landowner Rights

The Blue River near Silverthorne is a catch-and-release fishery, and anglers are encouraged to use barbless hooks. Respect the private property boundaries along certain sections and use designated public access points. Always carry a valid Colorado fishing license and practice responsible fishing to protect this unique tailwater environment.