Various methods and ...
Published by Vishakha Rajput, Previous COO The Water Network at AquaSPE AG
Various methods and technologies are available to quantify ground water recharge, however, choosing appropriate techniques is sort of difficult. Important considerations in choosing a technique/method include space, time scales, range, soil conditions and reliability of recharge estimates based on different techniques.
Methods for estimating recharge are subdivided into various types, on the basis of the 3 hydrologic sources , from which the data are obtained, namely surface water, unsaturated zone, and saturated zone.
Water Budget is the most comenly used method. The water budget for a basin can be stated as:
P + Q on = ET + Q off + Change in watre stogare
where P is precipitation (and may also include irrigation); Qon and Qoff are water flow onto and off the site, respectively. ET is evapotranspiration.
Lets discuss in deatil other methods as well. It would be good to know some new technologies like how GIS can be used for recharge mapping etc.
1 Comment
Thanks Vishakha for your response and involvement in the discussion. yes that's like a general frame of water balance, However going into details, let's discuss in details using GIS to estimate the recharge rates.
Published by Ismail Hassan, Khatib & Alami - Consolidated Engineering Company - Senior Infrastructure Engineer