GEOLOGY

Detailed explanation-1: -Surface water seeps into the ground and recharges the underlying aquifer-groundwater discharges to the surface and supplies the stream with baseflow. USGS Integrated Watershed Studies assess these exchanges and their effect on surface-water and groundwater quality and quantity.

Detailed explanation-2: -This statement is true because the water in-ground is more than compared to water in rivers and lakes.

Detailed explanation-3: -To better understand the difference between groundwater and surface water, groundwater is considered to be underground water. On the other hand, surface water is freshwater that exists above ground. Most of the groundwater contained in the earth is situated within half a mile or less from the surface.

Detailed explanation-4: -Answer and Explanation: Of the following, the statement about groundwater that is not true is underground aquifers holding about 99% of all liquid fresh water. About 30% of freshwater is stored in aquifers.