Earth's Fluid Systems Practice Test

Groundwater storage changes with the balance between recharge (water entering the aquifer) and withdrawals (pumping). If pumping consistently exceeds recharge, more water is removed than is replaced, so the stored water in the aquifer decreases. Over time this lowers the water table and can lead to reduced well yields and other effects. The depletion is gradual because the aquifer holds a large volume of water and the deficit accumulates over time.

The idea that the aquifer would gradually gain water isn’t correct because that would require recharge to exceed pumping. The notion of the water table becoming completely dry instantly isn’t accurate; drying out happens over years or decades, not in a single moment. And saying there’s no effect on water quantity ignores the net loss of stored groundwater that occurs when withdrawals exceed recharge.