Groundwater
Groundwater is a precious natural resource. Groundwater collects when rainwater and melting snow are absorbed into the soil. The amount of water absorbed as groundwater is influenced by vegetation, the form of the surface of the ground, the moisture level of the surface layer, the coarseness of the soil, and the structure and density of the layers. Groundwater is mostly stored in layers of sand and gravel. Groundwater also exists in bedrock, where water enters through fractures and crevices. The annual amount of precipitation absorbed as groundwater varies from 0% to 50%, depending on soil quality.