River LA

Grand Bayou Canal

Louisiana • 29.5234, -90.4100

Hydrography profile Updated Dec 30, 2025

Checking mapped path coverage…

USGS and NOAA data is for informational purposes. Source notes

Length

7 mi

11 km

Elevation

2′ → -1′

3 ft drop

Stream Order

Medium River

Slope

0.01%

0.5 ft/mi

Drainage

994,586 mi²

2,575,966 km²

Avg Flow

-- cfs

1.1 mph velocity

Path to Mouth

51 mi

82 km to ocean

Classification

Tributary

Mid-reach

Elevation Profile

Water Quality

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

Data from USGS & NOAA for informational purposes only. More