zone of influence

syn. area of influence 

Area around a pumping or a recharging well in which the water table (in unconfined aquifers) or the piezometric surface (in confined aquifers) is lowered or raised to a significant degree by pumping or recharging.

 

Source:

UNESCO/WMO International Glossary of Hydrology (2nd revised ed., 1992)

Posted on February 25, 2014 .