The procedure for determining ground water needs to codified before this definition can be applied. Water table level is the single most predominant factor affecting the use of and individuals land.  Vac 610-470 Para D, E attempts to do this but.  610-D method is very arbitrary as to which water table is being determined. The water table indicated could be from 100 years ago before any land drainage in the surrounding area. The current W/T may be much deeper. Codify how 610-470 Para E method will be used in the determination.