These maps have been out since the first half of the 1900's. You can get them printed out at the NRCS office. Being on-line is new or I haven't seen them before. I have always gotten them in a packet when having a NRCS program done. They are very accurate. I have no idea how they get their info but mine have always been exact. I wouldn't think they would be much help with foodplots because most people can't choose where to put a plot. They have to put it where the opening is or wherever is available.