Oak trees are being moved along Elysian Fields Ave. It's part of major $141M stormwater project
We talk about this type of flood mitigation in our insurance class, using greenspace to temporarily capture rainfall. This is one of the larger projects I have witnessed. I remember that El Paso would use their playgrounds in a similar manner. Jefferson Parish has placed a levee around the Wally Pontiff Jr playground in Old Metairie for a similar effect: https://www.nola.com/news/politics/new-orleans-gentilly-green-project-resumes-after-lengthy-delay/article_59fb7820-bc9a-431c-8354-4f170a3e3ccb.html