Extent of Louisiana Coastal Wetland Loss
The New Orleans Times Picayune has created an interactive graphic to depict the scope of coastal land loss in Louisiana.
Select the interactive graphic entitled: The Rise and Disappearance of Southeast Louisiana. The presentation will explain in about seven minutes how the hydrologic cycle described in my last blog entry applies to the Mississippi River and Southeast Louisiana.
Most important when the active presentation ends, you will be left with a map of Louisiana and to the right side of the screen, you will have the ability to select a map of Southeast Louisiana as it existed in 1932, 2000, 2005 and a projection for 2020. Leaving aside what might come to be in the future, alternate views between the map as it was in 1932 and as it was in 2005. What you see will take your breath away.
The interactive graphic is an excellent presentation of the basic geology, but it leaves out an important part of the story. Dams are destroying the wetlands at the mouth of the Mississippi River and not levees. Near the mouth, there are no levees.
Erich P Rapp.
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