Custer County · stream · order 5 river · ~121 cfs typical
North Fork Big Lost River
Stocked 4× on record · IDFG
North Fork Big Lost River is a stream in Custer County, Idaho, stocked with Cutthroat Trout - Yellowstone — most recently on Jul 22, 2026. FishableWaters aggregates every stocking record for this water from IDFG; the latest schedule and today's bite windows are above.
Best days this week
Days near a new or full moon tend to fish best.
Today's bite windows
Conditions, next 3 days
Today
Mostly clear
82°
54°
15 mph
12%
Fri
Partly cloudy
87°
60°
17 mph
2%
Sat
Overcast
88°
61°
21 mph
0%
↗ pressure risingPost-front rising pressure can slow things down for a day.
Stocking ledger
| — 2026 — | ||||
| Jul 22 | Cutthroat Trout - Yellowstone | 1,200 | 6" | |
| Jul 8 | Cutthroat Trout - Yellowstone | 349 | 6" | |
| Jun 23 | Cutthroat Trout - Yellowstone | 318 | 6" | |
| Jun 3 | Cutthroat Trout - Yellowstone | 353 | 13" | |
Angler reports
What's biting
No reports yet — be the first
Best bite times
No reports yet
Field notes
No notes yet
Nearby waters
- East Fork Big Lost River0.0 mistocked Jul 8, 2026
- Twin Bridges Creek1.5 mi
- Wildhorse Creek2.0 mistocked Jul 23, 2026
- Summit Creek3.7 mi
- Garden Creek4.0 mi
- Kane Creek4.1 mi
- Burnt Creek4.6 mi
- Grasshopper Creek4.0 mi
Seasons, limits, and rules are the state's call — check the official ID regulations and buy your license before you go. We link the source; we never restate the rules.
North Fork Big Lost River fishing — FAQ
What fish are stocked in North Fork Big Lost River?+
North Fork Big Lost River is stocked with Cutthroat Trout - Yellowstone in Custer County, Idaho, most recently on Jul 22, 2026 by IDFG. The full stocking ledger is on this page.
When does North Fork Big Lost River get stocked?+
Going by 4 records since 2026, stocking at North Fork Big Lost River peaks in June and July. Check this page for the season's scheduled and most recent stockings.
Do I need a license to fish North Fork Big Lost River?+
Yes — Idaho requires a fishing license. Buy one from the state and check current seasons and limits before you go; both are linked on this page.
Where is North Fork Big Lost River?+
North Fork Big Lost River is a stream in Custer County, Idaho. Driving directions and an interactive topo map are on this page.
Data: IDFG · updated Jul 22, 2026 · checked daily · we publish what agencies publish, nothing else.