Those weeds...growing in your roadside ditch....those are wetland plants. You think they were there before they cut that ditch??
Some people down the road from us bought a small house that is very close to the road, from back in the horse and buggy days. They were planning to move it back a little way, so passing cars didn’t zoom right by them.
But in the meantime, the town road workers put a culvert under another road just above the house, and sure enough, the water drained through it into a low spot, and caused some “wetlands plants” to bloom.