3. consider a 100 cm long one-dimensional vertical column undergoing steady-state saturated flow. the datum elevation is located at the base of the column. the water table is located at the top of the column. the medium is homogeneous and has a hydraulic conductivity of1 cm/day. the column is initially under hydrostatic conditions. at time t=0, the top boundary is changed to cause a downward flux of 1.5 cm/day. plot the hydrostatic head (x-axis) asa function of height above the base of the column (y-axis) for the initial conditions, the eventual steady state, and two times when flow is transient. explain any significant characteristics of the profiles. 100 90 80一 70 d 60 50 40 30 20 10 0 50 100 150 200 250 300 hydraulic head (cm)