River LA

Upper Grand Bayou

Louisiana • 29.4902, -89.6383

Hydrography profile Updated Dec 30, 2025

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USGS and NOAA data is for informational purposes. Source notes

Length

3 mi

5 km

Elevation

0′ → 0′

0 ft drop

Stream Order

Headwater

Slope

0.00%

0.0 ft/mi

Drainage

992,887 mi²

2,571,568 km²

Avg Flow

-- cfs

0.5 mph velocity

Path to Mouth

3 mi

4 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