River LA

Bayou Saint Denis

Louisiana • 29.5071, -90.0635

Reviewed mapped path Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

7 mi

11 km

Elevation

-2′ → -2′

0 ft drop

Stream Order

Large River

Slope

0.00%

0.0 ft/mi

Drainage

994,143 mi²

2,574,819 km²

Avg Flow

-- cfs

1.8 mph velocity

Path to Mouth

7 mi

11 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