Pattern Library
Iron Sally fly pattern
Nymph · #47 of 129

Iron Sally

Imitates: Yellow Sally / Little Yellow Stonefly nymph

Quick Reference

Best Sizes
#12-16
Best Season
Summer (June through August)
Best Conditions
Western freestone rivers, Yellow Sally hatches, post-runoff
Water Temp
55-65°F
Recommended Tippet
4X-5X fluorocarbon

How to Rig It

Lead nymph under an indicator with a smaller dropper 18" below. Or anchor fly on a Euro-nymph rig.

How to Present It

Dead-drift through riffles and pocket water during a Yellow Sally emergence. The yellow body and rubber legs trigger strikes that plain nymphs miss.

Why It Works

Yellow Sallies (Isoperla) emerge on every Western river in summer. The yellow dubbing matches the natural color exactly; the rubber legs and gold flash imitate the wiggling, struggling nymph swimming to shore to emerge.

History

Mike Mercer of California developed Iron Sally for the Lower Sacramento and Trinity rivers, then it spread across the West as anglers realized Yellow Sally hatches were under-fished.

Pro Tip

When you see small yellow stoneflies fluttering above riffles in July or August, tie on a #14 Iron Sally as your lead fly. Drop a #18 BWO emerger off the back.

Frequently Asked Questions

What does Iron Sally imitate?+

A Yellow Sally / Little Yellow Stonefly nymph. Yellow Sallies are a major summer food source on every Western trout river.

When is the Yellow Sally hatch?+

June through August on most Western rivers, peaking in July. Look for tiny yellow stoneflies fluttering above riffles in the afternoon.

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