River ID

North Fork Sun River

Idaho • 47.8481, -112.9248

Reviewed mapped path Updated Feb 1, 2026

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

27 mi

44 km

Elevation

5,776′ → 4,735′

1,041 ft drop

Stream Order

Medium River

Slope

0.72%

38.2 ft/mi

Drainage

264 mi²

683 km²

Avg Flow

-- cfs

1.1 mph velocity

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

Data from EPA Water Quality Portal (USGS, EPA, state agencies).

Loading the interactive map…

Data from USGS & NOAA for informational purposes only. Read source and safety notes

Rain Radar