There was a time, oh, 200 years ago or so, when the whole of the Delta (yes, yes – it's actually an alluvial floodplain, not a delta) was one giant hardwood swamp, snaking through Louisiana, Mississippi, Arkansas, and beyond. Then it was logged and the swamps drained for farmland, to raise cotton, then soybeans and corn, later still catfish, and now rice – or more accurately, all of these and more, all the time.
The hardwood swamps are largely gone, but here and there are vestiges of the Delta's past – tiny pockets of trees in the middle of fields, low spots that could never be drained, parts of oxbow lakes that didn't get filled in.
All images from Google Maps 2018.