New Orleans, Louisiana is famously one of the lowest-lying major cities in the world, with an average elevation of about 1 meter (3 ft) above sea level – and many neighbourhoods sitting below sea level. The city's unique 'bowl' geography makes flood management a defining challenge.
Key Facts at a Glance
| Average city elevation | 1 m (many areas −1 to −2 m) |
|---|---|
| Lowest point (Lower 9th Ward) | −2 m (below sea level) |
| Highest point (Metairie Ridge) | 3–4 m |
| Coordinates | 29.9511° N, 90.0715° W |
| Country / Region | Louisiana, USA |
Elevations by District
| District / Area | Elevation |
|---|---|
| French Quarter | 1–2 m (above sea level) |
| Uptown / Garden District | 2–4 m |
| Lakeview | −1 to 0 m |
| Lower 9th Ward | −2 to 0 m |
| Mid-City | 0 to −1 m |
| Metairie Ridge | 2–4 m |
Compare: New Orleans and Nearby Cities
| City | Elevation |
|---|---|
| Baton Rouge, LA | 15 m |
| Houston, TX | 14 m |
| Memphis, TN | 90 m |
| Miami, FL | 2 m |
Interesting Facts About New Orleans's Elevation
- Over 40% of New Orleans lies below sea level, protected by an extensive network of levees, flood walls, and pumping stations.
- Hurricane Katrina in 2005 caused catastrophic flooding when levees failed, inundating 80% of the city.
- The French Quarter, built on the highest ground along the natural Mississippi River levee, was founded in 1718 and largely avoided Katrina's floods.
Frequently Asked Questions About the Elevation of New Orleans
What is the elevation of New Orleans?
New Orleans has an average elevation of approximately 1 metre (3 feet) above sea level, with large parts of the city actually below sea level, particularly post-Katrina rebuilding areas.
How does New Orleans stay dry?
New Orleans relies on an extensive flood control system: 560 km of levees and flood walls, plus 24 major pumping stations that can remove massive volumes of rainwater. Without this infrastructure, much of the city would be permanently flooded.
Did New Orleans sink?
Yes, parts of New Orleans have subsided (sunk) over decades due to groundwater withdrawal, drainage of wetlands, and the natural compaction of delta sediments. Some areas that were above sea level in the early 20th century are now below it.