
CDC Walt's Worm
CDC Walt's Worm is a modern trout nymph that gives the classic Walt's Worm a softer profile and more emergent look. It targets CDC Walt's Worm, soft euro nymph, and best Walt's Worm variation searches.
Imitates: Caddis larvae and general drifting aquatic food
Quick Reference
- Best Sizes
- #12-16
- Best Season
- Spring through fall
- Best Conditions
- Clear runs, transition water, and wary trout lies
- Water Temp
- 46-62°F
- Recommended Tippet
- 5X-6X
How to Rig It
Fish as a middle fly or above a heavier anchor where subtle movement can seal the deal.
How to Present It
Use a natural dead-drift and allow the CDC to breathe during tiny pauses.
Why It Works
The CDC makes an already productive pattern feel more alive to trout.
History
As tactical nymphing evolved, anglers created CDC versions of established confidence patterns for selective fish.
Pro Tip
Try this after a plain Walt's Worm gets interest but not clean eats.
Frequently Asked Questions
When should I fish CDC Walt's Worm?+
Fish it when trout want the buggy Walt's Worm profile with more movement.
Not sure if CDC Walt's Worm is right today?
Get a fly recommendation based on live water temp, flow, sky, and time of day for any river in the US.
Open Fly Advisor