Increased Runoff And Groundwater Recharge
It enlarges surface runoff, by producing more impervious surfaces such as roadway and buildings that do not allow percolation of the water down through the soil to the aquifer. It is instead enforced directly into rivers or storm water runoff drains, where erosion and siltation can be major problems, even when flooding is not. Increased runoff decreases groundwater recharge, consequently lowering the water table and making droughts worse, particularly for farmers and others who depend on water