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Waterton Canyon on the South Platte River isn’t just another spot on the map, it’s a rite of passage for fly fishing enthusiasts. If you’re looking to sharpen your skills, this is the place. The canyon’s reputation as one of the most technical fisheries around isn’t just for show; it’s earned.
Waterton Canyon is in peak form, low, clear, and full of attitude. Trout are spooky but active, so it’s all about the stealthy approach and surgical casts. Hikers and bikers are out in force, so beat them to the punch or outwalk the crowds by heading up the canyon. Flows are stable and light, perfect for technical nymphing or sipping dries on slack water.
Once you're past the first mile or two, you’ll start finding more cooperative fish and fewer humans. The brown trout here know the game, but with the right fly and a delicate drift, they’ll play along.
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Conditions Summary
- Flow Rate: ~68 CFS
- Water Temp: ~41°F mid-morning
- Air Temp: 60s in the morning, 80s–90s by afternoon
- Clarity: Gin-clear, classic tailwater clarity
- Best Times to Fish: 10 AM–3 PM for bug activity; dawn for streamers
- Crowds: Prepare for friends. A lot of them.
Waterton Canyon Hatch Chart
| Timing | Hatches |
|---|---|
| Last Month | Midges, BWOs, Early Caddis |
| This Month | Midges, BWOs, Caddis, Sallies |
| Next Month | Caddis, Sallies, Tricos |
Top 3 Flies for the Month
Dry Fly – Parachute BWO (#20–22): Match afternoon risers in slow runs and behind rocks.Nymph – RS2 + Zebra Midge combo (#20–24): Deadly under a small indicator or tight-lined.
Streamer – Mini Leech or Thin Mint (#10–12): Low light hours in deeper tailouts and behind ledges.
Tips for Fly Fishing Waterton Canyon
Seasonal Tip: Low flows require finesse. Long leaders, small tippet, and subtle presentations win the day.Dry Fly Tip: BWOs start popping late morning, sneak up on risers and watch the drift.
Nymphing Tip: Two-fly rigs with a midge or emergers below a small beaded point fly work best.
Streamer Fishing Tip: Early morning or cloudy days are your best shot, swing tight to structure.
Access Points
Trailhead / Mile 1
Why fish here? Consistent structure, easy access, high pressure.Best for: Beginners or warm-up drifts before heading deeper.
Ratings: Parking ⭐⭐⭐⭐ | Wading ⭐⭐⭐ | Crowds ⭐⭐⭐⭐
Mile 2–3
Why fish here? More seams and cover, fewer hikers.
Best for: Dry-dropper combos and light nymph rigs.
Ratings: Parking ⭐⭐⭐ | Wading ⭐⭐⭐⭐ | Crowds ⭐⭐
Upper Canyon (Mile 4–6+)
Why fish here? Technical water with better fish and less pressure.
Best for: Bikers or hikers who want solitude and a challenge.
Ratings: Parking ⭐ | Wading ⭐⭐⭐⭐ | Crowds ⭐
Local Regulations and Notes on Landowner Rights
Artificial flies and lures only.Respect posted signage and all wildlife, this is Denver Water land, not a free-for-all.
Be mindful of bighorn sheep, rattlesnakes, and sudden flow changes.
Bikes allowed; no dogs permitted beyond the gate.
FAQ on This Spot
Is Waterton Canyon good for beginners?
Yes, flat trails and friendly access help, but the fishing is technical. It's a great training ground.
How far do I have to go to get away from crowds?
Go past mile 3. Most days, traffic turns around before then. The upper canyon sees far fewer rods.
What size tippet should I use here?
5x or 6x is standard; these fish are educated and spooky in the clear water.
Are there big fish in Waterton?
Yes, but they’re cagey. You’ll find larger browns in the upper canyon. Bring your A-game.
Can I bring my bike to access the upper spots?
Definitely. It’s the best way to fish miles 3–6 efficiently.
