Fig. 5. (A) Ground water level, (B) rainfall, and (C) drain discharge in Drain Set 2 as a function of time on Days 18 to 21 (i.e., 25 to 28 Apr. 1998) as measured at the experimental field. The dashed lines in (A) indicate the range of the drain depth. Note that the scale of the vertical axes of (B) and (C) differ.