11 Facts About Groundwater recharge

Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater.

Groundwater recharge encompasses water moving away from the water table farther into the saturated zone.

Groundwater recharge is an important process for sustainable groundwater management, since the volume-rate abstracted from an aquifer in the long term should be less than or equal to the volume-rate that is recharged.

Artificial groundwater recharge is becoming increasingly important in India, where over-pumping of groundwater by farmers has led to underground resources becoming depleted.

Groundwater recharge occurs through mineral soils found primarily around the edges of wetlands.

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Groundwater recharge is typical in small wetlands such as prairie potholes, which can contribute significantly to recharge of regional groundwater resources.

Rates of groundwater recharge are difficult to quantify since other related processes, such as evaporation, transpiration and infiltration processes must first be measured or estimated to determine the balance.

Groundwater recharge rates are different for moist, medium, and arid climates.

Precipitation trends are predicted to relay minimal change quantitatively in the near future, while groundwater recharge rates are subject to increase as a consequence of global warming.

Different mechanisms of groundwater recharge have different sensitivities in response to climate change.

Therefore, urbanization increases the rate of groundwater recharge and reduces infiltration, resulting in flash floods as the local ecosystem accommodates changes to the surrounding environment.