River ID

Little Firehole River

Idaho • 44.4857, -110.9151

Reviewed mapped path Updated Feb 1, 2026

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USGS and NOAA data is for informational purposes. Source notes

Length

11 mi

18 km

Elevation

8,500′ → 7,269′

1,231 ft drop

Stream Order

Medium River

Slope

2.12%

111.8 ft/mi

Drainage

48 mi²

125 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