---
title: Blue River Fly fishing Report | Silverthorne to Green Mountain | April
description: Get the latest Blue River fly fishing report for April 2025. Discover top flies, hotspots, and expert tips for fishing from Silverthorne to Green Mountain Reservoir.
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---

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# Blue River Fly fishing Report | Silverthorne to Green Mountain | April

- April 3, 2025

![Tymothe Meskel](https://risebeyondflyfishing.com/hubfs/Untitled%20design%20(33).png)

[Tymothe Meskel](https://risebeyondflyfishing.com/blog/author/tymothe-meskel)

![blue river between sliverthorne and green mountain resevior fly fishing report](https://risebeyondflyfishing.com/hs-fs/hubfs/blue%20river%20between%20sliverthorne%20and%20green%20mountain%20resevior%20fly%20fishing%20report.png?width=810&height=810&name=blue%20river%20between%20sliverthorne%20and%20green%20mountain%20resevior%20fly%20fishing%20report.png)

 

 

### 🎧 Listen to the Podcast!

Blue River Winter Fly Fishing\_ Silverthorne to Green Mountain (2)

10:39

 

The Blue River from Silverthorne to Green Mountain Reservoir is waking up after a long winter. With clear, cold flows and longer days, trout are starting to shake off their sluggishness. That said, this stretch still requires a technical touch—light tippet, small bugs, and a slow approach.

Midges and Baetis are your bread and butter right now. Fish in the town section are sipping tiny dries in the afternoons, while the mid- and lower sections favor small nymphs drifted through soft seams. With the occasional mysis shrimp in the mix near the dam and some late-day streamer chases in deeper holes, variety is on the menu. But make no mistake—this stretch is still more brains than brawn.

---

## ![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)

## Conditions Summary

**Flow Rate:** 80–100 CFS (Clear and stable)  
**Water Temperature:** 37–41°F  
**Clarity:** Crystal clear—stealth is a must  
**Fishing Pressure:** Moderate in town, light upstream and down  
**Wind:** 5–15 mph, gusts up to 20 in the afternoons  
**Best Times:** 11 AM to 3 PM  
**Star Rating:** ⭐⭐⭐ (3/5 – Technical but rewarding, especially for patient anglers)

---

### 📈 River Flow Chart

![](https://risebeyondflyfishing.com/hs-fs/hubfs/image-png-Apr-03-2025-03-07-43-5148-PM.png?width=412&height=220&name=image-png-Apr-03-2025-03-07-43-5148-PM.png)  
**Source:** Colorado DWR River Station Reports

 

---

## Blue River Hatch Chart

| Month | Primary Hatches | Effective Patterns |
| --- | --- | --- |
| February (Previous Month) | Midges, Baetis, Mysis Shrimp | Zebra Midge (#20–24), RS2 (#20–22), Mysis Shrimp (#16–18) |
| March (Last Month) | Midges, Baetis (BWO), Small Stones | Black Beauty (#20–24), Blue Wing Olive (#18–22), Pheasant Tail (#16–20) |
| **April (Current Month)** | Baetis, Caddis (late), Midges | Blue Wing Olive (#18–20), Barr's Emerger (#18–22), Sparkle Caddis (#16–18) |

---

## 🪶 Top Flies for the Week

- **Dry Fly:** Blue Wing Olive (#18–20) – Rising fish on overcast afternoons, especially near Silverthorne.
- **Nymph:** Pheasant Tail (#16–20) – An essential Baetis imitation—deadly in slower seams.
- **Streamer:** Mini Leech (#10–12) – Low and slow through the deeper holes near the inlet and mid-river.

 

---

![Fisherman carefully releasing a trout back into the cool waters of a Colorado mountain river.](https://risebeyondflyfishing.com/hs-fs/hubfs/Trout%20Close%20Ups/Fisherman%20carefully%20releasing%20a%20trout%20back%20into%20the%20cool%20waters%20of%20a%20Colorado%20mountain%20river..png?width=1366&height=768&name=Fisherman%20carefully%20releasing%20a%20trout%20back%20into%20the%20cool%20waters%20of%20a%20Colorado%20mountain%20river..png)

## 🎣 Tips for Fly Fishing the Blue River in Early April

### Seasonal Tip

Afternoons bring more bug activity—don’t rush to the water too early. Focus on soft water and tailouts.

### Dry Fly

Expect risers in town during cloudy weather. Try a CDC BWO emerger or parachute BWO pattern.

### Nymphing

Still the name of the game. Double rigs with midge/Baetis combos and a small split shot are productive.

### Streamer Fishing

Sporadic but worth a try near Green Mountain. Drift and jig, don’t strip—think finesse over flash.

---

## ![Fly fishing report banner featuring a close-up of a brown trout being held over the South Platte River. Text overlay reads 'Fish Smarter | Get the Full Report' with a call-to-action button saying 'Read More' to access premium fly fishing insights, hatch forecasts, and flow conditions.](https://risebeyondflyfishing.com/hs-fs/hubfs/Deckers%20(3).png?width=1200&height=300&name=Deckers%20(3).png)

## 🚗 Access Points

### Silverthorne Public Access (Below Dillon Dam)

**Description:** Classic tailwater with consistent temps and flows.  
**Why Fish Here:** Trophy rainbows and mysis shrimp buffet.  
**Locals’ Rating:** ⭐⭐⭐⭐

#### 🔥 Hot Spots

- **Behind the Outlet Malls:** Slow seams and risers on overcast days.
- **Beneath the I-70 Bridge:** Prime mysis zone—watch for suspended fish.
- **Upstream near the pedestrian bridge:** Shallow runs, great for sight fishing.

---

### Blue River State Wildlife Area (Mid-Section)

**Description:** More wild, less polished. Slower water and bigger rocks.  
**Why Fish Here:** Fewer anglers and more natural flows.  
**Locals’ Rating:** ⭐⭐⭐⭐

#### 🔥 Hot Spots

- **Blue River Campground Access:** Deep bend pools with structure.
- **Pull-offs along Hwy 9:** Pocket water with surprising depth—ideal for dry-dropper setups.
- **Cattle gate bend:** Less pressured water; sneaky good on overcast days.

---

### Green Mountain Reservoir Inlet

**Description:** Transition zone with deeper water and pre-spawn staging.  
**Why Fish Here:** Great for targeting big browns or lake-run rainbows.  
**Locals’ Rating:** ⭐⭐⭐⭐

#### 🔥 Hot Spots

- **Where the river fans into the lake:** Look for cruisers in the shallows.
- **Deeper eddies on the west bank:** Great for streamer and jig nymph presentations.
- **Above the inlet channel:** Fish stack up here before running into the lake.

---

## ⚠️ Local Regulations and Notes on Landowner Rights

- Artificial flies and lures only—bait is prohibited.
- Barbless hooks required in town and near the dam—watch for signage.
- Respect private property boundaries, especially in mid-river zones.
- Flows are controlled by dam releases—always check gauges before planning your trip.

---

April on the Blue River rewards focus and finesse. Come prepared with your tiny flies, be ready to adjust throughout the day, and you'll find yourself in the good graces of some picky but beautiful Colorado trout.

 

[https://www.silverthorne.org/discover-silverthorne/visitor-s-guide](https://www.silverthorne.org/discover-silverthorne/visitor-s-guide)

 Blog Post

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