I'm trying to build a vulnerability map for one region, by pesticide contamination in groundwater,
indeed, I have to make the maps of each parameter. So, I didn't find how to calculate the NET RECHARGE, and "I don't have the quantity of rainfall in region".
Someone could help me about it?
You need to have at least rainfall and groundwater table data to estimate approximately the recharge quantity, if you can not go for details estimation. However, you can collect it from other studies in the same area, since you dont have data.
Dear François. You can use thorntwaite method. You may have flow data to estimate the rainfall.
Thank you everyone, for your responses, they are helpful
@Jean Ghislain, do you have the documents about this method? can you share it with us please? thank you
Dear François, take a look to this paper:
https://www.researchgate.net/publication/260434813_Modelling_nonpoint_source_pollution_by_nitrate_of_soil_in_the_Mateur_plain_northeast_of_Tunisia?ev=prf_pub
Article Modelling nonpoint source pollution by nitrate of soil in th...
Dear Francoise,
Please take a look to our paper.
https://www.researchgate.net/publication/277477371_A_supervised_committee_machine_artificial_intelligent_for_improving_DRASTIC_method_to_assess_groundwater_contamination_risk_a_case_study_from_Tabriz_plain_aquifer_Iran?ev=prf_pub
Article A supervised committee machine artificial intelligent for im...
Dear Rahim,
Thank you very much for your helping,
I will be back to tell you how was the calculation!!!
if you have all necessary data like Temperature, flow, RF and others, you can use the Thornwaits or water balance method. but if you have only Rf and Temperature you can use TRUC model or Chaturvedi model.
in 3D environment, it is difficult to estimate recharge
as we can calculate the net recharge for each geological thickness multiplied by electrical conductivity as gradient and geology as limit of interpolation. it is optimized for two principal factor such as hydro-Topographic slope (T) and (R).
This is my suggestion i think logically that are more realistic.
You need to have at least rainfall data to estimate approximately the recharge quantity because it is difficult to adress alone this parameter. If you can not go to the website of rainfull map. However, you can collect necessary data from other studies or thesis in the area, since you did not have raifall data.
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