What are springs?

What are springs?

• A. Water from precipitation seeping to an aquifer.
• B. Bodies of water stored in glaciers.
• C. Water from some aquifers naturally percolates up to the ground surface.
• D. The process of evaporation from water bodies.

Answer: (C)

Springs are natural discharges where groundwater rises to the surface from an aquifer. This happens when the water table intersects the ground or when an aquifer is under enough pressure that the groundwater is forced upward and flows out at the surface. Springs are thus a way for groundwater to leave the subsurface and become surface water, feeding streams and wetlands. The other processes described—recharge by precipitation seeping into the ground, water stored in glaciers, and evaporation from water bodies—are different parts of the hydrological cycle and do not describe the emergence of groundwater at the surface. That’s why water from some aquifers naturally percolates up to the ground surface best captures what a spring is.

Springs are natural discharges where groundwater rises to the surface from an aquifer. This happens when the water table intersects the ground or when an aquifer is under enough pressure that the groundwater is forced upward and flows out at the surface. Springs are thus a way for groundwater to leave the subsurface and become surface water, feeding streams and wetlands. The other processes described—recharge by precipitation seeping into the ground, water stored in glaciers, and evaporation from water bodies—are different parts of the hydrological cycle and do not describe the emergence of groundwater at the surface. That’s why water from some aquifers naturally percolates up to the ground surface best captures what a spring is.