Two groundwater wells are located 100 m apart in permeable sand and gravel. The water level in well 1 is 50 m below the surface, and in well 2 the water level is 75 m below the surface. The hydraulic conductivity is 1 m day-1 , and porosity is 0.60. What is
(a) The Darcy velocity, υd = Q/A?
(b) The true velocity of the groundwater flowing between wells?
(c) The period it takes water to travel between the two wells, in days?