Upper Green River
river in Wyoming
Flowing from the Wind River Range, the Upper Green River is a classic Western freestone river that excels during the summer hatch seasons.
River flow last 30 days
Significantly low flows at 47
- 01Significantly low flows at 47.0 cfs, much lower than typical for mid-October.
- 02Late-season Tiny BWO hatch winding down, Mahogany Duns and October Caddis beginning to emerge.
- 03Fish are concentrated in deeper runs, pools, and undercut banks due to low water.
- 04Nymphing is performing well, especially in upper sections.
- 05Stealth, longer leaders, and proper fly weighting/retrieve are crucial in clear, low water.
Past reports week by week
8 weeksWhat to tie on
Picked from reports, hatches and the season. Tap a fly for the recipe and where else it works.
Perdigon
An effective and versatile nymph for getting down quickly in fast water and targeting subsurface feeders in low flows.
Buy at AmazonBlood Dot Egg
With brown trout spawning in the fall, egg patterns are a prime opportunistic food source for Cuttbows and Whitefish.
Buy at AmazonOctober Caddis (Dry)
Matching the highly anticipated October Caddis hatch, a key fall food source for opportunistic feeders.
Buy at AmazonBlue-Winged Olive (BWO) Comparadun
Matches the active late-season BWO hatches, effective for selective trout and whitefish feeding in the surface film.
Buy at AmazonZebra Midge
Midges are a consistent year-round food source, and this weighted pattern is crucial for getting deep in the low, clear water.
Buy at AmazonFlashback Hare's Ear Nymph
A versatile searching nymph that imitates various active aquatic insects, with added flash for visibility in clear conditions.
Woolly Bugger (Olive)
A reliable streamer for enticing aggressive strikes from deeper-holding trout and whitefish, mimicking leeches and baitfish.
Mahogany Dun
Matching the expected Mahogany Dun hatch, offering additional dry fly opportunities for surface feeders.
Buy at AmazonTH Zebra Midge
A weighted midge pattern ensures proper depth in low flows, capitalizing on the consistent year-round midge activity.
Pine Squirrel Leech (Olive)
A smaller leech imitation, effective for enticing lethargic trout and whitefish in colder, low-flow conditions.
Where to fish and who to ask
Big Piney Access
Provides access to the lower canyon sections where the river picks up speed and depth.
Warren Bridge Access
The primary access point for the upper reaches near the town of Cora.
Fly shops within 40 miles
Rendezvous Anglers
Two Rivers Fishing Co.
Get Upper Green River reports by email
Save this water and we'll email you a weekly summary of conditions, hatches and what's working.
Wyoming season by season
What changes on the water through the year, with the flies for each season.
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Quick answers
Common questions about Upper Green River.
What flies work best on Upper Green River?
Our top scored fly patterns for Upper Green River right now are Perdigon (80% confidence), RS2 (80% confidence), Stimulator (Yellow) (80% confidence). These picks are scored from recent fishing reports, hatch data, and seasonal patterns.
What fish species are in Upper Green River?
Upper Green River holds Cuttbows, Whitefish. See the species links on this page for fly recommendations and seasonal behavior for each.
What are current flow conditions on Upper Green River?
Live USGS streamflow readings for Upper Green River are charted in the sidebar of this page and updated automatically from the nearest gauge.
Is Upper Green River fishing well right now?
We publish a fresh bite report for Upper Green River each week based on recent on-the-water intel. The current report — with conditions, hatches, and what's producing — is on this page.