TypesДЄ) Porous вЂ“ Those with pores/airspaces between rock grains through which water passes e.g. Rocks that allow water to pass through them. Groundwater exists where impermeable rock overlies an impermeable one so that when water infiltrates and percolates underground itвЂ™s trapped by impermeable rock and accumulates above it.ДЄquifer вЂ“ permeable rock which is permanently saturated with water. There is a greater possibility of the existence of groundwater where there are permeable surface rocks. On steep areas, there is low infiltration since a lot of water turns into a runoff because of getting less time to percolate. On flat and gently sloping areas rainwater has ample time to infiltrate because it remains in one place for a long time.

Light rain falling over a long period of time infiltrates more than a heavy short-lived downpour. Water trapped in rocks beneath surface during vulcanicity Factors Influencing Existence of Ground Water PrecipitationДЇor groundwater to exist precipitation must exceed evaporation. Water from rivers, seas, swamps, oceans, lakes and ponds that seep into the ground. Water that infiltrates into the ground when snow melts during spring and summer. Some rain water which percolates and is trapped after meeting an impermeable rock. It is common in the coastal areas where ocean water seeps horizontally into the ground from the ocean Sources of Ground Water Rain Water This is groundwater that results from the seepage of groundwater into the ground. This is water that is brought closer to the earthвЂ™s surface due to volcanic activities. It is also referred to as magmatic water. It is the result of precipitation water seeping into the ground Juvenile water This refers to groundwater that originates from rainfall and other forms of precipitation such as hailstorms and snowfall. The chemical composition of water changes with the changes that the rock undergoes. This is water trapped in the pores of the rock during the formation of rocks. This water is also called an вЂњaquifer.вЂќ The following are four types of ground water: Connate water Groundwater is simply water under the ground where the soil is completely filled or saturated with water. Ground or subterranean water is water that is found below the earthвЂ™s surface.

Geomodel of underground water