Why is there always bad flooding north of the lake?

Rivers

ETA: That combined with piss poor developmental planning and drainage.

Look at the map.

Yep. Levees, or the lack thereof, had nothing to do with this.

hey coon

Winds out of the south coupled with Southern Louisiana's aversion to stormeater runoff controls as it relates to development.

quote:

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Because the southshore has taller levees and the water has to go somewhere.

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Well, sort of but that's hugely ignoring the biggest factors. First and foremost is that coastal erosion has gotten to the point that any time there's a predominant east or south wind, the water rises about 1000x faster than it used to. To make matters worse, hasty and poorly planned development on the north shore changed the hydrology while skimping on drainage. Higher levees on the north shore would not have prevented this. I guess you could levee every river and bayou over there but then you'd have to spend another fortune moving any water that finds it's way inside those levees...

Water

Perception bias.

All our rivers drain to the lake. When the wind comes out of the south it stakes up the water on the north shore about 2 feet. Then all the rivers can't drain to the lake and go backwards. The water moving backwards meets the water in the rivers still heading south toward the lake. The rivers leave the banks. Big flood.

Why, do these eyes of mine cry?