If a groundwater well pumps enough water to draw down the water table, the drawdown will increase the slope of the water table, which will increase the velocity of groundwater.

Question

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When the water table is drawn down by a groundwater well, the slope of the water table increases. This change in gradient causes the velocity of groundwater to increase, as there is now a greater hydraulic gradient (difference in water pressure) driving the flow of water through the subsurface. This is known as the "cone of depression" effect, where water is drawn down around the well and creates a cone-shaped depression in the water table. As a result, the velocity of groundwater increases in this area.

If a Groundwater Well Pumps Enough Water to Draw Down