Essay on groundwater

According to modern conceptions, the groundwater is formed at the expense of water molecules within the solid part of the earth. As a result of the receipt of water to the rocks from the outer shells also it result of dewatering of the sedimentary origin of metals.

About 1% of water on the earth is made up by ground water and the groundwater volume is equal to a fifty five m thick layer in the earth surface. Groundwater supplies are the fundamental resources for people drinking, agriculture and even industry, about 80% of drinking water in Middle East, Europe, Russia and North America are groundwater.

Groundwater Occurrence: Through the soil the falling rain seeps down to the aeration or unsaturated zone which its vents are filled with air. It continues to seep deeper to enter the saturated zone where rocks vents are filled with water. The surface of that zone is called the water table that can occur everywhere in ground layers.

Groundwater movement depends on the slope of the water table which, to a certain extent, follows the contours of the land surface. When there is an alternate arrangement of permeable and impermeable rock strata, especially when folded, faulted and jointed, it forms underground reservoirs, and natural water storage of various kinds.