No flow
81d ago
Conditions
The Big Lost is shaping up well for the outlook window. The North Fork is clearing and the main stem holds fish; the East Fork draws heavy pressure, so plan to move water and seek unpressured lies. Flows remain slightly elevated but manageable for confident waders. Morning hatches of Tricos and PMDs fade by afternoon, but crane flies persist through the day. Bring an assortment of attractor patterns in both large and small sizes, plus nymphs and streamers to cover your options.
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
