River LA

Tom Bayou

Louisiana • 31.3159, -91.4175

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

1 mi

2 km

Elevation

15′ → 6′

9 ft drop

Stream Order

Large River

Slope

0.12%

6.4 ft/mi

Drainage

1,132 mi²

2,931 km²

Avg Flow

-- cfs

1.8 mph velocity

Path to Mouth

371 mi

597 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