River AR OK TX

Mountain Fork

Arkansas • 34.4831, -94.4669

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

98 mi

158 km

Elevation

1,113′ → 306′

807 ft drop

Stream Order

Large River

Slope

0.16%

8.2 ft/mi

Drainage

846 mi²

2,191 km²

Avg Flow

1,580 cfs

1.4 mph velocity

Path to Mouth

453 mi

730 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