Depletion of underground water table

Pumping of underground water for day to day activities with reduced ground percolation often results in depletion of ground water table. This results in consumption of more electricity for pumping out water. Also in coastal areas depletion of ground water leads to salinity intrusion which results in land degradation leading to loss of local flora and agriculture. If the aquifers are confined and lie between layers of aquicludes of thick organic clay withdrawal of ground water with no recharge of rain water may lead to compaction of aquifers resulting in irreversible land subsidence(Benjamin,1998)