Groundwater discovery methods
The term groundwater refers to that water that is under the surface of the earth and that enters through the pores of the soil and through the cracks of rock and settles in it, and most of the groundwater comes from the rain that crosses the soil until it becomes saturated with water and then seeps into the layers of the earth, and this process only occurs in tropical areas Or during the winter season in temperate climates, and usually the percentage of precipitation that crosses the pores of the soil and forms water bodies that can be used from 10% to 20% of the amount of precipitation, and this article will talk about methods of discovering groundwater.
Groundwater discovery methods
The discovery of groundwater depends on examining and knowing the geological nature of the region, and the groundwater is usually in low-lying areas such as valleys, and conversely, groundwater is rarely found in mountainous areas, and the presence of green spaces such as trees and plants can indicate the existence of groundwater accumulations. The presence of underground water in areas of high rivers and dry pools, and its presence is confirmed by digging holes under these pools at a depth of five to seven feet from the surface of these dry water bodies, and specialists can be used in methods of discovering groundwater who have devices that send radio waves across the earth’s layers Where these devices can know the depth of groundwater if any, and whether there is economic feasibility to extract it.
Sources of groundwater pollution There can be a number of causes and sources behind groundwater pollution, any pollutant that is present on the surface of the earth or within its layers can pollute the groundwater significantly, and pollution may be from a direct or indirect source as follows:
- The direct source: people may pollute groundwater by burying waste inside the layers of the earth at great depths, and this waste remains for many years buried, which helps it to reach the groundwater bodies and pollute them directly.
- Indirect source: Air pollution can contribute to cloudy precipitation with acid rain that feeds the surface of the earth and the soil with pollutants that mix with them and seep into the ground through the soil pores and rock cracks into the groundwater and contaminate it.
The importance of groundwater
Groundwater is one of the most important natural resources of the human race, and groundwater represents 30% of the fresh water in the world, and it is the main and important source for agriculture and food industry, and groundwater plays an important role in maintaining the water level and flow in rivers and lakes, especially during the dry months of The year and the lack of rainfall, groundwater is characterized by its high quality and is free of impurities, and the importance of knowing methods of discovering groundwater; Because the cost of extracting it is relatively lower than the desalination process, in terms of infrastructure and treatment.