Two groundwater wells are located 100 m apart in permeable sand and gravel. The water level in woll one is 51 m below the ground surface, and in well number two the water level is 78 m below the ground surface The hydraulic conductivity (K) is 1 m/day, and the porosity () is 0.60. Compute Darcy's velocity (q). Estimate the true lactual) velocity of the groundwater flowing between the two wells. Calculate the period (time) it takes the groundwater to travel between the two wells, in days.