River AR

Posten Bayou

Arkansas • 33.0660, -93.7357

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

15 mi

24 km

Elevation

213′ → 180′

34 ft drop

Stream Order

Medium River

Slope

0.04%

2.3 ft/mi

Drainage

49,689 mi²

128,694 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

203 mi

327 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