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Cheesman Canyon is the most technical stretch of the South Platte River near Denver, especially in winter. Low clear water, heavily pressured trout, and steep canyon walls create a fishery that rewards patience and precision.
Updated: March 4, 2026
Cheesman in early March is technical but rewarding. The fish are still in winter lies, but the longer light and mild afternoons are beginning to trigger Baetis movement.
This is not a numbers game stretch right now. It is a precision game. Long leaders. Micro adjustments. Fish every seam completely before stepping. When the hatch window opens, it happens quietly.
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Conditions Summary
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- Flow: 124 CFS. Stable tailwater flow creating defined pocket seams and narrow deep runs.
- Water Temperature: 37 °F
- Air Temperature: 43 °F
- Wind: 3 to 8 mph
- Clarity: Clear
- Crowds: Low to Medium
- Primary Hatch: Midges transitioning to Baetis
- Best Window: 11 a.m. to 3 p.m.
- Overall Rating: High reward technical canyon fishing
- Dry Fly Score: ⭐️
- Nymph Score: ⭐️⭐️⭐️⭐️
- Streamer Score: ⭐️⭐️
Weather
Top Flies in Your Box This Week
Primary Method: Nymphing | Primary Hatch: Midges
- Top Secret Midge Natural Olive 22 to 24: Dead drift in narrow canyon seams.
- Black Beauty Sparse Thread Body 22 to 24: Fish deep in shaded runs.
- Matt’s Midge Root Beer 20 to 22: Effective in transition water.
- CDC RS2 Gray 20 to 22: Fish 6 to 10 inches above bottom during feeding lifts.
- Miracle Nymph Slim Profile 20 to 22: Clean drift through walking speed canyon lanes.
Secondary Hatch: Winter Stoneflies
- JuJu Baetis Olive 18 to 20: Fish near bottom during warming afternoons.
- Barr’s Graphic BWO Nymph 18 to 20: Tight drift through pocket seams.
- Film Critic BWO Emerger 18 to 20: Raise in column when fish tilt upward.
Attractor and Streamer
- Mini Pine Squirrel Leech Olive 10 to 12: Slow swing through deeper canyon pools.
- Micro Sculpzilla Natural 8 to 10: Target undercut edges and shaded water.
Indicator: Small New Zealand style yarn or tight linePro Rig of the Week: Cheesman Canyon Precision Rig
Lead Fly: JuJu Baetis 18
Dropper: Top Secret Midge 22
Weight: Micro split shot 10 to 12 inches above lead fly
Target Water: Narrow canyon seams and deeper pocket transitions
Cheesman Canyon Hatch Chart – March
| Bug Type | Size | Notes |
|---|---|---|
| Midges | 20 to 26 | Dominant in morning and shade |
| Baetis | 18 to 20 | Increasing afternoon activity |
| Leeches | 8 to 12 | Trigger option in deeper pools |
Download the South Platte 2026 Hatch Chart
Access Points – Cheesman Canyon
Upper Canyon Access | 📍 Locals Rating ⭐️⭐️⭐️⭐️ 4.5
Steep entry with defined winter pocket water.
Middle Canyon Bends | 📍 Locals Rating ⭐️⭐️⭐️⭐️ 4.0
Deep seams and boulder structure.
Lower Canyon Exit | 📍 Locals Rating ⭐️⭐️⭐️ 3.5
Softer edges holding fish late in the window.
South Bank Trail Section | 📍 Locals Rating ⭐️⭐️⭐️ 3.0
Limited access but lighter pressure.
Upper Rim Drop In | 📍 Locals Rating ⭐️⭐️⭐️ 3.0
Technical approach with fewer reliable lies.
Gill Trail Access | 📍 Locals Rating ⭐️⭐️⭐️⭐️⭐️ 5.0
Classic canyon structure and depth.
Cheesman Dam Trail | 📍 Locals Rating ⭐️⭐️⭐️⭐️ 4.5
Deep runs with technical seams.
Upper Canyon Bends | 📍 Locals Rating ⭐️⭐️⭐️⭐️ 4.0
Defined inside seams holding fish.
Lower Canyon Tailouts | 📍 Locals Rating ⭐️⭐️⭐️⭐️ 4.0
Walking speed tailouts fish well midday.
Far Downstream Stretch | 📍 Locals Rating ⭐️⭐️⭐️ 3.5
Less pressure, more technical drifts.
Stop Here After the River
Bud’s Bar-Sedalia
Old-school, cash-only, unapologetic Colorado. This is the place guides hit when they want something simple and perfect after a long day on the South Platte. Order the single cheeseburger with onions, grab a side of chips, and take in the atmosphere that hasn’t changed in decades. It’s loud, it’s honest, and it hits the spot after hiking in and out of canyon water all day.
Local Regulations & Notes
Artificial flies only in main stretchesWatch for ice shelves in shadowed canyon walls
Respect trail closures and posted signage
Fish are extremely selective; micro-adjust drifts and weight often
FAQ
Is Cheesman Canyon Good for Fly Fishing in Winter?
Yes, but only for prepared anglers. Cheesman offers consistent winter trout fishing, but feeding windows are short and presentations must be precise.
How Technical Is Cheesman Canyon Compared to Deckers?
Cheesman is more technical. Clearer water, heavier structure, and less forgiving trout demand better drift control and lighter tippet than Deckers.
Q: Is Cheesman Canyon good in December?
A: Yes, but it’s ultra-technical. Clear water and small bugs dominate.
Q: Do fish rise in winter here?
A: Very rarely; only occasional midge clusters on warm, still days.
Q: What is the best technique right now?
A: Two-midge nymph rig with light weight and long, drag-free drifts.
Q: Is the hike difficult in winter?
A: Some sections are icy; traction helps significantly.
Q: Where are trout holding most consistently?
A: Deep buckets, slow inside seams, and canyon-wall shelves.
Q: What is the biggest mistake anglers make?
A: Too much weight and rushing through good water.
Q: How difficult is Cheesman Canyon in winter?
A: Very. Clear water, cold temperatures, and educated trout demand patience and precision.
Q: Is it worth hiking in during winter?
A: Yes, if conditions are safe. Pressure drops quickly and fish are more predictable.
Q: Are dry flies an option right now?
A: Rarely. Midges may bring fish up briefly on calm sunny afternoons, but subsurface is the program.
Q: Do streamers work in Cheesman Canyon in winter?
A: Occasionally, but small nymphs consistently outproduce streamers in cold clear flows.
Q: What tippet should I use?
A: 5X to your lead fly and 6X to your midge dropper is standard.
Q: When does the bite shut down?
A: Typically once canyon shadows take over, often shortly after 2:30 p.m. in winter.
Companion Article for December
Photo of the Month
Credit: Colorado Trout Hunters
Book Colorado Trout Hunters for Private Waters and Top access along the South Platte
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