--- title: Blue River Fly Fishing Report Below Green Mountain 12/5/25 description: Get the most accurate Blue River fishing report below Green Mountain Reservoir. Updated conditions, top flies, access points, pro rigs, and winter trout behavior in one guide. image: https://risebeyondflyfishing.com/hubfs/Blue%20River%20-%20The%20Blue%20Rivers%20turquoise%20waters%20set%20against%20a%20mountainous%20horizon.png --- [Skip to content](https://risebeyondflyfishing.com/blog/blue-river-fly-fishing-report-below-green-mountain-12/5/25#main-content) This is a search field with an auto-suggest feature attached. - There are no suggestions because the search field is empty. 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[Blue River](https://risebeyondflyfishing.com/blog/tag/blue-river), - [Lower Blue River](https://risebeyondflyfishing.com/blog/tag/lower-blue-river), - [River Report](https://risebeyondflyfishing.com/blog/tag/river-report), - [Western Colorado](https://risebeyondflyfishing.com/blog/tag/western-colorado), - [Breckenridge Fly Fishing](https://risebeyondflyfishing.com/blog/tag/breckenridge-fly-fishing), - [Blue River Fly Fishing Report](https://risebeyondflyfishing.com/blog/tag/blue-river-fly-fishing-report), - [Most Popular](https://risebeyondflyfishing.com/blog/tag/most-popular), - [Mountain Region](https://risebeyondflyfishing.com/blog/tag/mountain-region) # Blue River Fly Fishing Report Below Green Mountain 12/5/25 - December 4, 2025 ![Tymothe Meskel](https://risebeyondflyfishing.com/hubfs/Untitled%20design%20(33).png) [Tymothe Meskel](https://risebeyondflyfishing.com/blog/author/tymothe-meskel) Steady winter flows and ultra-clear canyon water define this stretch right now. ![Blue River Fly Fishing Report near Green Mountain Resevior](https://risebeyondflyfishing.com/hs-fs/hubfs/Spring%202025%20River%20Report%20Banners/Blue%20River%20Fly%20Fishing%20Report%20near%20Green%20Mountain%20Resevior.png?width=1600&height=900&name=Blue%20River%20Fly%20Fishing%20Report%20near%20Green%20Mountain%20Resevior.png) **Updated: 12/04/2025** The Blue below Green Mountain is running low, clear, and cold, with trout sliding deeper into predictable winter holding water. Flows have barely shifted from last week, but lower overnight temperatures have tightened feeding windows and slowed fish movement. Trout are feeding almost exclusively on midges and small baetis nymphs drifting through slower lanes. Angler pressure is low, and those who adjust depth and weight precisely are finding consistent winter success. > #### **Listen to the Audio Overview** Blue\_River\_Winter\_Fly\_Fishing\_Tactics (1) 5:14   --- ## **Conditions Summary** **![rise beyond fly fihsing company in denver colorado a guide rating for a stream. Good is 5 trout. This rating is for 3 trout. So good or semi challenging fishing conditions.](https://risebeyondflyfishing.com/hs-fs/hubfs/Guide%20Ratings/Guide%20Rating%20(800%20x%20175%20px)%20(3).png?width=800&height=175&name=Guide%20Rating%20(800%20x%20175%20px)%20(3).png)** - **Flow:** Stable low tailwater release; unchanged week over week - **Water Temperature:** High 30s to low 40s; slowly trending downward - **Air Temperature:** Mid 30s afternoons; colder in canyon shadows - **Clarity:** Very clear; excellent sighting but spooky trout - **Crowds:** Low; very light winter pressure - **Best Window:** 11 am to 3 pm when the canyon warms slightly - **Fishing Type Focus:** Nymphing, because trout are concentrated in soft, deep seams and responding to tiny drifting midges   --- > ### **Weather** [SILVERTHORNE WEATHER](https://forecast7.com/en/39d63n106d07/silverthorne/?unit=us)   Expect a cold, shaded canyon most of the day with only brief warming midday. Cloud cover improves midge drift and softens glare, making the bite more consistent. --- ## **Top Flies in Your Box This Week** - Black Beauty 20–22 - Top Secret Midge 22–24 - Mercury Midge 20–22 - RS2 Gray 20–22 - WD40 Brown 20–22 - JuJu Midge Purple 20–22 - Shot Glass Baetis 20 - Chocolate Thunder 20–22 - Rainbow Warrior 20 - Mini Leech Black 14     --- ### **Pro Rig of the Week – Canyon Winter Micro-Drift Rig** > **Leader:** 10 ft 5x fluoro tapering to 6x > **Top Fly:** WD40 Brown 20 > **Dropper:** Top Secret Midge 24 > **Indicator:** Yarn or micro AirLock set light > **Weight:** One micro split-shot; adjust constantly > **Target Water:** Deep mid-channel troughs, slow inside edges, and canyon pockets that collect drifting midges   --- ## **Hatch Chart for November** | Hatch Type | Bug & Size | Notes | | --- | --- | --- | | **Primary** | Midges 20–26 | Most active mid-day under clouds | | **Secondary** | Baetis 20–22 | Light but present during warm spells | | **Tertiary** | Winter Stones | Rare; occasional nymph drift only |   > #### Download the Hatch Chart   --- ## **Access Points** **Green Mountain Canyon Trail Access** Steep trail but classic winter water with deep runs and slow seams. Rating: ⭐⭐⭐⭐ **Lower Canyon Pull-Offs** Clear water, good structure, low pressure; excellent long-run drifting. Rating: ⭐⭐⭐ **BLM Access Near the Confluence** Broader runs transitioning toward Colorado River behavior; reliable depth. Rating: ⭐⭐⭐⭐ **Roadside Gravel Bars (Downstream)** Soft winter water with room to spread out; best for long nymph drifts. Rating: ⭐⭐⭐ **Tailwater Approach Area** Coldest section but steady midge drift; technical and rewarding. Rating: ⭐⭐⭐ --- ## **Stop Here After the River** ![Photo of stout](https://lh3.googleusercontent.com/gps-cs-s/AG0ilSwy_dwCKZ161sLeAlC2tFfBG55H9op7ZVUu80CLUN5wP6TnKHa2wEuJ6kiGy0PvJ4VZzrvPmCdxhUY2clfDF_fE2lNOoVLT90SOATW5tydeVqbziH04z5BoE_gc3lgii7az3QeM=s680-w680-h510-rw) **Angry James Brewing Co. (Silverthorne)** A warm, relaxed local brewery perfect after a day in the cold canyon. Expect big mountain vibes, community tables, and comfort-focused après energy. **What to order:** The Resolute IPA and the rotating food truck’s signature warm dish. --- ## **Local Regulations & Notes** - Watch for icy banks along shaded canyon walls - Flows are stable but can shift slightly with dam operations - Barbless hooks recommended for safe winter handling - Shelf ice forms mid-morning on colder days --- ## **FAQ** **Q: Is this stretch easier than the Silverthorne tailwater?** **A:** Yes, less pressured, though still very technical. **Q: Are streamers worth throwing?** **A:** Only small leeches fished painfully slow. **Q: What depth should I target?** **A:** Deep winter slots where current softens. **Q: Is 6x needed?** **A:** Almost always in this clarity. **Q: When is the best feeding period?** **A:** A short mid-day window once the canyon warms. **Q: Can I sight-fish here?** **A:** Yes, in slower edges and deep clear lanes. --- > ## **Companion Article** [**Colorado Winter Trout Feeding Behavior in Clear, Low-Flow Rivers**](https://risebeyondflyfishing.com/blog/colorado-winter-trout-feeding-behavior-why-micro-nymphs-matter-in-cold-tailwaters)       [![Rise Beyond Logo 10.29.24 300x100px (3)](https://risebeyondflyfishing.com/hs-fs/hubfs/Rise%20Beyond%20Logo%2010.29.24%20300x100px%20(3).png?width=300&height=100&name=Rise%20Beyond%20Logo%2010.29.24%20300x100px%20(3).png "Rise Beyond Logo 10.29.24 300x100px (3)")](https://www.risebeyondflyfishing.com) #### Wonder | Wander  At Rise Beyond Fly Fishing, our mission is to equip you with the tools and expertise to confidently traverse the beautiful Colorado waters. 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