Idaho Fishing Reports ยท Upper Snake Region
The Fall River drains the southwest corner of Yellowstone and runs through rocky canyons and farmland to the Henrys Fork, with rainbows and cutthroat.
Looking for the latest Fall River, Idaho river report? This page is updated by the AvidMax fly shop team with live flows, current conditions, hatches and the flies working now on the Fall River (Ashton to Chester).
Current flows
Wind forecast
Fall River fishing report
Updated November 7, 2026.
Flows are low and clear for fall.
Nymphs and small dries in the pocket water, and streamers near the lower bridges.
Load your fly box
Before you head to Ashton to Chester, bring: Pat', s Rubber Legs #6-10, Elk Hair Caddis #14-16, Parachute Adams #14-18, Pheasant Tail Nymph #14-16, Stimulator #10-14, Zebra Midge #18-22, RS2 Emerger #18-22, JuJu Baetis #18-22, Black Beauty #20-24, Egg #14-16, Squirmy Wormie #12-14, Scud Bomb #14-16.
Flies working right now
The flies above that we have in stock right now.
Fall River details
| Access | Bridges and pullouts near Ashton, Chester and the Yellowstone border roads. |
|---|---|
| Elevation | About 5,300 ft |
| Nearest town | Ashton, Idaho |
| Best season | Summer and fall |
| Fish | Rainbow and cutthroat trout |
| Regulations | Check the Idaho Department of Fish and Game seasons and rules before you go. An Idaho fishing license is required for anglers 14 and older, plus a steelhead or salmon permit where those fish are targeted. |
| Leaders and tippet | 9 ft leaders, 4X to 5X tippet |
| Camping | Caribou-Targhee National Forest campgrounds upstream |
| Kids | Partly. |
| Good to know | Very slippery boulders. Much of the lower river crosses private land, so use public access. |
Fishing by season
Winter
Snowed in upstream.
Spring
Runoff.
Summer
Stoneflies, caddis and attractors.
Fall
BWOs and hoppers.
How to get there
From Ashton, take Highway 47 or the Cave Falls Road east toward the river.