Impacts of Climate Changes on Groundwater Depletion

Abstract

The relationship between the changing climate variables and groundwater is more complicated and poorly understood. Climate change impacts may add to existing stress on groundwater resources by impeding recharge capacities in some areas in the world. In some vulnerable areas, such impacts on groundwater resources may render the only available freshwater reserve unavailable or unsuitable for use in the near future. Climate changes will enhance groundwater’s criticality for drought proofing agriculture and as well as threat to there source. However, groundwater has received little attention from climate change impact assessments compared to surface water resources. In this paper the impacts of Climate Changes on Groundwater Depletion has been death with in details. Aquifers and groundwater-dependent ecos3'stems arc being stressed due to increasing demand from water consumption, irrigation and climate change. These pressures modify groundwater levels and their temporal patterns and threaten vital ecosystem services such as arable land irrigation and ecosystem water requirements, especially during droughts. There may be other associated impacts, such as seawater intrusion, water quality deterioration, potable water shortage etc. The greater variability in rainfall could mean more frequent and prolonged periods of rising or depleting groundwater levels, and saline water intrusion in coastal aquifers due to sea-level rise and resource reduction. Groundwater resources am related to climate change through the direct interaction with surface water resources, such as lakes and rivers, and indirectly through the recharge process. The direct effect of climate change on groundwater resources depends upon the change in the volume and distribution of groundwater recharge.