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4 and 5. But 3 is also a valid concern as wetlands assist in absorbing some of the water during high tide. BUT, 4 and 5 definitely.
The two ways to the geographical features of New Orleans contribute to flooding. The first is the city is inside manmade levees and the second is much of the city lies below sea-level.
What is the geography of New Orleans?
Geography, New Orleans is a city defined and influenced by waterways, as it is essentially an island between the Mississippi River and Lake Pontchartrain. New Orleans, known as the Crescent City because of its quarter-moon shape, was cut off from the rest of the world for over 250 years.
What is manmade levees?
Piling soil, sand, or pebbles on a cleared, flat surface is how most artificial levees are constructed. Levees built of wood, plastic, or metal can be used in regions where a river's flow is strong.
What is below sea-level?
The elevation of the ocean/land contact known as the shoreline is referred to as sea level. Land that is higher than this elevation is above sea level, while land that is lower is below sea-level.
To learn more about the the geographical features of New Orleans manmade levees and below sea-level here.
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