Equation

          where (I) h = water table elevation, K = permeability, s and b = sand blanket and ballast. = thickness of sand blanket, z,8 = elevation of subgrade above lowest point of subgrade. q = recharge. S1= specific yield (drainable porosity), t = time. and x = horizontal coordinate.   calculate H with respect to x and t. SolneedH=f(x ,t)