River LA

Bayou Voisin

Louisiana • 29.2136, -90.9655

Reviewed mapped path Updated Dec 30, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

3 mi

4 km

Elevation

0′ → 0′

0 ft drop

Stream Order

Stream

Slope

0.00%

0.0 ft/mi

Drainage

994,694 mi²

2,576,247 km²

Avg Flow

-- cfs

0.7 mph velocity

Path to Mouth

19 mi

30 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

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

Detailed hydrology

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