We live on a hill.  We planted this berm to slow down the water.  Slowing down the water should put more water in our well.  It should lessen erosion.  Also, our neighbors behind us experience flooding over their driveway during large rain storms, so we hope it will help with this as well.  An added benefit is noise reduction and privacy.

…and here it is.  It is not too impressive yet!  lol.  But it will grow…