north-fork-big-lost

North Fork Big Lost is a stretch on Big Lost River, Idaho.

Also called North Fork of the Lost River.

It is fishable.

Small feeder stream in the northwest of the basin that joins the East Fork to form the main river (Flywaters). Flywaters describes it as stocked around campgrounds and bridges. IDFG Fishing Planner: North Fork Big Lost River, a tributary of the Big Lost, 24.6 mi.

It is upstream of Big Lost River Main Stem.

Sourced from 3 sites.

Sources: flywaters.com (retrieved 2026-10-29), Idaho Department of Fish and Game (retrieved 2026-10-29) and The Perfect Fly Store.

Access, closures and rules change; check with the state agency before you go.