It looks like you’re referencing a hatch chart or fly selection guide for the Boulder River near Moose Creek (possibly in Montana?) with the number 3046 (which might be a catalog or product code). Below is a general guide to fly fishing the Boulder River, including suggested flies based on hatches and conditions:
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Boulder River (Montana) Hatch Chart & Fly Recommendations
(Assuming this is the Boulder River in Montana, near Moose Creek or the Absaroka-Beheler Wilderness)
Spring (March–June)
– Blue-Winged Olives (BWOs) (16–20)
– Fly Suggestions: Parachute Adams, Sparkle Dun, RS2
– Skwala Stones (early spring, 10–12)
– Fly Suggestions: Skwala Dry, Stimulator, Chubby Chernobyl
– March Browns (12–14)
– Fly Suggestions: March Brown Comparadun, Pheasant Tail Nymph
Summer (July–August)
– Pale Morning Duns (PMDs) (14–18)
– Fly Suggestions: PMD Sparkle Dun, CDC Emerger
– Yellow Sallies (14–16)
– Fly Suggestions: Yellow Stimulator, Elk Hair Caddis
– Terrestrials (ants, beetles, hoppers)
– Fly Suggestions: Fat Albert, Dave’s Hopper, Chernobyl Ant
Fall (September–October)
– Tricos (20–24, mornings)
– Fly Suggestions: Trico Spinner, Parachute Trico
– Mahogany Duns (14–16)
– Fly Suggestions: Mahogany Comparadun, CDC Emerger
Year-Round Nymphs & Streamers
– Nymphs: Pheasant Tail (16–18), Hare’s Ear (14–16), Prince Nymph (12–14)
– Streamers: Woolly Bugger (black/olive), Sculpzilla, Zonker
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Moose Creek (Boulder River Tributary?)
If Moose Creek is a tributary, focus on:
– Smaller dries (16–20) like Parachute Adams or Elk Hair Caddis
– Nymphs: Copper John, Zebra Midge
Local Fly Shops for Confirmation:
– Sweetcast Angler (Big Timber, MT)
– East Rosebud Fly Shop (nearby)
If “3046” refers to a specific fly pattern, let me know, and I can help identify it! Tight lines! 🎣