Environmental Engineering [1]
6)The horizontal tunnels constructed at shallow depths along the banks of a river to intercept the ground water table are called
7) The vertical wells provided along the banks of a river to draw ground water in dry season are called
8) When a pervious strata is sandwitched between two impervious strata of cup shape, the well is called a tube well.
9) A pipe sunk into the ground to tap the underground water is called
10) When in the pervious strata, the surface of water surrounding the well is at atmospheric pressure, the well is known as