1. When it was built, it was barely above sea level.
The original French Quarter, the French Quarter, was built from the early 18th century.
The settlers who obtained the best land were able to build only about 10 feet above sea level. Even from the beginning, the city was engaged in a difficult battle as it developed. New Orleans is mostly flat and the areas around the French Quarter are just a bit lower.
But in this situation, every foot counts.
2. It was built on loose soil
As the city grew, architects chose to build shorter houses and structures, fearing that the ground could not support higher.
"Although some [structures] Historian Lawrence N. Powell of New Orleans wrote, "Most people have climbed up to three stories and sometimes even four stories. Most of them hovered around two or two and a half floors. "The accidental city: improvising New Orleans."
3. A drainage system had unintended consequences
Without sediment and water to stabilize the soil, "old marshes sank to 8-12 feet" and wetlands quickly eroded, Campanella wrote in a study.
4. The sea level rises
This continued sinking, associated with rising sea level globally as a result of the climate crisis, means that New Orleans will likely be between 2½ and 4 meters below sea level by 2100.