Big Lost River - Upper

Custer County

Updated August 16, 2026

IDFG Access SitesActive

Current conditions

Nearest gauge · 2.1 mi

Live1 hour ago

Flow

cfs

Gage height

0ft

Seasonal Flow

Normal

34th percentile for Sep 5 · 116-yr record

Flow · 2 weeks + 7-day forecast

Holding near ~102 cfs by Sep 12 · issued Sep 5, 2026, 10:22 AM MDT · NOAA

CountyCuster

Region6

Campyes

Restroomno

Rampno

Dockno

ADA fishingno

Fishing / BoatingFishing

Coordinates44.01782, -113.98930

Camping is limited to no more than 10 days within any 30 day period. Please pack out what you pack in..

Data: Idaho Fish & Game · Source id idfg_access:213