Final answer:
Groundwater supplies would be depleted if they were withdrawn faster than they were replenished. This can have various negative impacts such as saltwater intrusion, changes in groundwater flow, and depletion of rivers, lakes, and reservoirs.
Step-by-step explanation:
Groundwater supplies would be depleted if they were being withdrawn faster than they were replenished. When groundwater is pumped from wells, it can result in a drop in the water table, called a cone of depression. If this overuse continues, the regional water table can significantly decrease. This can lead to a depletion of groundwater, saltwater intrusion, changes in groundwater flow direction, subsidence, and sinkholes. It can also cause rivers, lakes, and reservoirs to be depleted.