The étude hydrogéologique environnementale is a research of the subsurface hydrological and geological characteristics in a specific location. The data acquired from such research can be used to create hydrogeological maps. It entails a thorough examination of the ocean levels of rocks as well as their filtering potential. Furthermore, it evaluates the inherent potential of these stones to store or repel water. It measures the strength of the water flow through pores or fractures as well as the pressure, kind, and quality of the subsurface water.
The Value of Hydrogeological Studying
Hydrogeological studies are often used to measure the level of subsurface water. Before constructing a borewell, hydrogeological research is carried out to determine the condition and amount of water available at a given site. Underground water has long been known to be a better water source than groundwater. The following are the reasons associated with it:
- Pollution is less likely, especially if it is at least 20 meters away from the sanitary activity.
- Water purifies itself naturally, as it passes over dirt and stones.
- Borewells are kept closed, which reduces the risk of contamination.
Regardless of seasonal variations, the temperature of the water at the subsurface level is constantly at a comfortable level. Because the water sources are located at a deeper level during summers, there are more odds of availability of water.
Simple or comprehensive hydrogeological study
The following are the components of a fundamental poll:
- Determine the end-requirements users for the area and quality of groundwater necessary
- Boreholes in the area
- The quality of groundwater is assessed
- An assessment of the catchment area
- Recommendations for borehole construction and design
- Risk assessment for health or the environment
- The amount of groundwater expected to be extracted from a specific place
A thorough hydrogeological study includes a few more characteristics, such as establishing the availability of aquifers, assessing the catchment’s risk, and analyzing the water source, particularly for possible contamination paths. All will be validated inclusive of the hydraulic characteristics of the aquifers as well as the direction and rate of groundwater flow.
Groundwater is a sustainable alternative that could potentially address a water problem in specific locations in the current world scenario when pure, uncontaminated water is scarce. Nonetheless, determining the amount and quality of accessible freshwater at the needed location might be difficult. Groundwater sources can be identified using hydrogeological surveying techniques along with the expected yield and water quality.