River ID

North Fork Imnaha River

Idaho • 45.1608, -117.1748

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

7 mi

12 km

Elevation

8,298′ → 5,314′

2,985 ft drop

Stream Order

Medium River

Slope

7.57%

399.5 ft/mi

Drainage

21 mi²

54 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

596 mi

959 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

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

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

Rain Radar