No flow
74d ago
Tricos and PMDs hatching throughout the morning and disappearing in the afternoon.
Conditions
Flows are dropping toward 400 CFS and remain manageable for confident waders despite slightly elevated water. Morning and afternoon hatches should bring Tricos, PMDs, and Crane Flies to the surface. The river continues to fish well, though heavy angler pressure means big fish are selective and grant only one look, keep moving to find undisturbed water and consider attractor patterns when specific hatches aren't locked in.
Gauges
Live cameras
Big Lost River below Inlet Diversion near Arco
USGS 13132520 · Oct 18, 2026, 5:00 PM
Every 60 min · daylight
Big Lost River near Arco
USGS 13132500 · Oct 18, 2026, 5:00 PM
Every 60 min · daylight
Big Lost River near Leslie
USGS 13130300 · Oct 18, 2026, 5:00 PM
Every 60 min · 247
Big Lost River bl Mackay Res nr Mackay
Last updatedUSGS 13127000 · Nov 7, 2025, 10:00 AM
Every 60 min · 247
Techniques
- Big fish are opportunistic feeders and will usually give an attractor dry fly a try; however, they will only give you one look.
- Keep moving around to find fish that have not been bothered the day before.