River ID

West Fork Madison River

Idaho • 44.7577, -111.8792

Hydrography profile Updated Feb 1, 2026

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USGS and NOAA data is for informational purposes. Source notes

Length

39 mi

63 km

Elevation

9,201′ → 5,870′

3,331 ft drop

Stream Order

Medium River

Slope

1.60%

84.5 ft/mi

Drainage

153 mi²

395 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).

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

Rain Radar