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Big Lost River

July 1, 2026

Big Lost River

Current conditions for Big Lost River · Map, access and gauges

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Conditions

Both upper and lower stretches of the Big Lost River are fishing well. Large Golden Stoneflies, Little Yellow Sallies, and thick PMD hatches are driving the action right now. These are solid pattern choices for the water.

Gauges

Live cameras

Big Lost River below Inlet Diversion near Arco

USGS 13132520 · Oct 12, 2026, 5:00 PM

Every 60 min · daylight

Big Lost River near Arco

USGS 13132500 · Oct 12, 2026, 5:00 PM

Every 60 min · daylight

Big Lost River near Leslie

USGS 13130300 · Oct 12, 2026, 5:00 PM

Every 60 min · 247

Big Lost River bl Mackay Res nr Mackay

Last updated

USGS 13127000 · Nov 7, 2025, 10:00 AM

Every 60 min · 247

Recommended flies

Golden StonefliesLittle Yellow SalliesPMDs

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