---
title: "Winter Fly Fishing Tips for Blue River: Silverthorne to Green Mountain in March"
description: Winter fly fishing on Colorado's Blue River offers challenging but rewarding experiences for skilled anglers targeting Baetis and midges in clear, cold waters.
image: https://risebeyondflyfishing.com/hubfs/Colorado%20Stream%20Fly%20Fishing%20Reports%20(Instagram%20Post).png
---

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# Winter Fly Fishing Tips for Blue River: Silverthorne to Green Mountain in March

- March 11, 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!

 

The **Blue River from [Silverthorne](https://risebeyondflyfishing.com/blog/fishing-report-blue-river-colorado-silverthorne-dillon-dam)to [Green Mountain Reservoir](https://risebeyondflyfishing.com/blog/fishing-report-blue-river-silverthrone-colorado)** is **a moody stretch of water**—it can be **rewarding, frustrating, or both in the same day**. With **low, clear flows**, these fish **aren’t making things easy**. Stealth, patience, and **small flies are the name of the game**.

As we transition into March, **Baetis and midges dominate the trout menu**, while the **occasional streamer bite might surprise you**. **Nymphing remains the most consistent method**, but on **warmer afternoons**, keep an eye out for **emerging BWOs in slower seams**. If you're up for a **technical challenge**, this stretch will test your skills—but **hooking into a Blue River trout makes it all worth it**.

---

## **![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**: 50-80 CFS (Low and clear)
- **Water Temperature**: 36-40°F
- **Clarity**: **Gin clear—stealth required**
- **Best Times**: Late morning to mid-afternoon
- **Star Rating**: ⭐⭐⭐ (3/5 – Challenging, but rewarding for technical anglers)

---

## **River Flow Chart**

![BLUDILCO - BLUE RIVER BELOW DILLON, CO. (3602055) Date:	3/6/2025 09:15:00 AM	Data Provider:	U.S. Geological Survey DISCHRG:	53.9 cfs	Stage:](https://risebeyondflyfishing.com/hs-fs/hubfs/image-png-Mar-06-2025-05-23-42-5311-PM.png?width=400&height=210&name=image-png-Mar-06-2025-05-23-42-5311-PM.png)  
**Source:** [Colorado DWR River Station Reports](https://dwr.state.co.us/Tools/Stations)

---

## **Blue River Hatch Chart**

| Month | Primary Hatches | Effective Patterns |
| --- | --- | --- |
| **February (Previous Month)** | Midges, Baetis, Mysis Shrimp (near Silverthorne) | Zebra Midge (#20-24), RS2 (#20-22), Mysis Shrimp (#16-18) |
| **March (Current Month)** | Midges, Baetis (BWO), Small Stones | Black Beauty (#20-24), Blue Wing Olive (#18-22), Pheasant Tail (#16-20) |
| **April (Next Month)** | Baetis, Caddis, Midges | Elk Hair Caddis (#16-18), RS2 (#20-22), Pat’s Rubber Legs (#12-14) |

---

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## **Top Flies for the Week**

- **Dry Fly**: [Blue Wing Olive (#18-22)](https://risebeyondflyfishing.shop/collections/dry-flies) – **Best on cloudy afternoons when BWOs are emerging**.
- **Nymph**: [Pheasant Tail (#16-20)](https://risebeyondflyfishing.shop/collections/hoppers) – **Reliable for imitating Baetis and small stoneflies**.
- **Streamer**: [Mini Leech (#10-12)](https://risebeyondflyfishing.shop/collections/streamers) – **Slow retrieves in deep runs can move the bigger fish**.

 

---

## **Tips for Fly Fishing the Blue River Between Silverthorne and Green Mountain Reservoir in March**

### **Seasonal Tip**

**Mornings are still cold, but afternoons can bring rising fish—watch for BWOs and midges in the slack water**.

### **Dry Fly**

**Look for occasional Baetis hatches** in slower seams and back eddies, but **don’t expect consistent dry fly action yet**.

### **Nymphing**

**The most productive approach**—small Baetis and midge nymphs fished deep **are the key to success**.

### **Streamer Fishing**

**Not a numbers game**, but **larger browns may chase small leeches or sculpins** in deeper holes.

---

## **![deckers colorado south platte river with Odells Lagerado and a custom made Rise Beyond Fly Rod 5wt](https://risebeyondflyfishing.com/hs-fs/hubfs/Angler%20in%20River/River%20Only/20240301_133443.jpg?width=800&height=600&name=20240301_133443.jpg)**

## **Access Points**

### **Silverthorne Public Access (Below Dillon Dam)**

- **Description**: **Tailwater section with year-round fishing and big trout**.
- **Why Fish Here**: **Consistently cold water and a reliable mysis shrimp hatch**.
- **Locals’ Rating**: ⭐⭐⭐⭐

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

- **Description**: **More remote, with a mix of pocket water and deep pools**.
- **Why Fish Here**: **Less pressured water, but requires more hiking**.
- **Locals’ Rating**: ⭐⭐⭐⭐

### **Green Mountain Reservoir Inlet**

- **Description**: **Transition water where the river meets the reservoir**.
- **Why Fish Here**: **Fish staging before entering the lake—potential for bigger fish**.
- **Locals’ Rating**: ⭐⭐⭐⭐

---

## **Local Regulations and Notes on Landowner Rights**

- **Artificial flies and lures only—no bait fishing**.
- **Barbless hooks required in some sections—check signage**.
- **Private property exists along this stretch—stay in public access areas**.
- **Flows are controlled by releases from Dillon and Green Mountain Reservoirs—check gauges before heading out**.

The **Blue River** between **Silverthorne and Green Mountain** is **not a numbers game in March**, but if you’re looking for **technical fishing, selective trout, and rewarding takes**, this stretch **delivers in spades**.

 

## RIVER WHISPER | SPOT FINDER | NEW!

Where to fish today! Tired of fly shops feeding you outdated, half-baked reports just to push gear? Us too. That’s why **River Whisper** exists—to cut through the noise and give you **real, up-to-date, no-BS** fly fishing reports for Colorado.

 

 

 Blog Post

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