Question

What is the relationship between drawdown and the cone of depression associated with a pumping well?A. The drawdown is the diameter of the cone of depression measured at the elevation of the original water table.B. The drawdown is the percentage of available water in the aquifer that has already been used.C. Drawdown is the distance between the original water table and the water level in the well.D. There is no relationship between drawdown and the cone of depression.

Answer 1

Answer:

Drawdown is the distance between the original water table and the water level in the well.

Option: (C)

Explanation:

• Drawdown is understood by the magnitude of lowering the level of water before pumping and the water level after the pumping of water over a certain period.

• Drawdown is simply occurred because of the higher rate of pumping of water from a well than the water is flowing in the well to fill up the space.

• A cone of depression is formed due to heavy pumping of water and then the water level sinks to exactly to a certain point in the well.