re: CNN says LA. is losing coastline due to global warming

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Wrong!

NOAA Data Map

Note that the data map is a combination of sea level rise and land subsidence. However, what you can clearly see from the map is that levels are rising everywhere, regardless of land drop.

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Nope nope nope!

The water level on the CONCRETE at Hebert's landing hasn't changed in 25 years.

The ocean levels could drop and you would say it’s because of global warming, or anything opposite of whom you oppose.

Good. Maybe their falling into the ocean is imminent.

Oh this is Louisiana? I thought it was Los Angeles. Lulz.

A bit of history is useful in explaining the loss

In 1905 Lafourche bayou was dammed at Donaldsonville. This very large waterway used to carry 13% of the Miss river flow to the gulf. Within 5 years saltwater intrusion was well north of Raceland shutting down several sugar mills. Ask your grandfathers if they remember the large oaks on the bayous down to the gulf. I remember the ones south of Leeville in the 1950's. Corp of Engineers realize the problem. Built a diversion in St Charles P 20 years ago and have studied other diversion paths. Far to much development required.

Second event. In the 1940-50 's the corp worked hard through the Miss. river basin to control flood waters, impoundment damming and erosion control. Their success can be understood by reviewing the Atchafalaya point Miss river quality monitoring data for that period. the suspended solid content drops by 60% during that period never to return.


Data is available on line

levees - yes. To the extent they've kept the Mississippi from changing its course. It would have changed course about 199 0 150 years ago. Almost all of the sinking is west of its mouth to Morgan City. Had the river diverted itself naturally, we wouldn't be talking about this. New Orleans might not be around either.

The MS river was/would be very close (in geologic timescale) to switching to the Atchafalaya. Think maybe 100 years or so.

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Or something like that

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I thought it was because of white privilege

They probably meant L.A and not LA. Reading articles on CNN can be tricky.

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Can somebody educate me on why we are losing coastline.

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Why is baton rouge in Mississippi on that map?

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Because it's showing the fault lines in southern Louisiana.

ETA: "Baton Rouge" is the name of that fault line.