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AI-generated city illustration of New OrleansNew Orleans · AI city illustration

New Orleans · North America

A city the river does not want there

Why New Orleans is where it is, and why keeping it there gets harder.

What you should be able to do after this: Explain why New Orleans was founded on an unstable delta, and how controlling the river created the flood risk the city now lives with.

0 of 4 · about 10 min

Start with geography

The shortest way between two waters

The Mississippi's lower course loops enormously. The site chosen for New Orleans in 1718 sits on a crescent of the river at a point where a short overland portage — a route Indigenous peoples of the region already used — reaches Lake Pontchartrain and, through it, the Gulf.

That shortcut is the whole reason for the address. The land itself is terrible for a city: soft delta sediment, close to sea level, hurricane-exposed and flood-prone. The site was chosen for connection, not for ground.

Check your understanding

Which river's lower course determined this site?

Answer the check to continue.

Sources for this chapter

Every source in this quest

Written by Globe Quest editorial and last reviewed 2026-09-07. Every claim above is traceable to one of these sources; where accounts genuinely differ, the chapter says so rather than choosing for you.