Aquifer mapping is a multi-disciplinary holistic scientific approach for aquifer characterization. It leads to aquifer-based groundwater management.
Mapping of aquifers helps determine the quantity and the quality of groundwater in a particular area, including:
- Vertical and lateral extent of aquifers
- Depth to water level/ piezometric surface in the aquifers
- Productivity of the aquifers
- Concentration of various chemical constituents in groundwater in different aquifers
- Current stage of groundwater development in various aquifers
- Identification of recharge and discharge areas of the aquifer
- Delineation of vulnerable areas with regard to exploitation and contamination
All such information is required to develop a strategy of sustainable groundwater management. The benefits of aquifer mapping include the following:
- Identifying zones for drilling productive wells.
- Understanding of aquifer vulnerability.
- Identification of streams at risk for reduced base flows as a result of heavy groundwater use.
- Formulation of effective aquifer management plans.
- Identification of areas for groundwater development, rainwater harvesting and groundwater recharge.
- Information sharing with stakeholders.