What is the water index? How can we calculate it?

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Harry Barton Essel Popular answer

You can calculate Water index using Water Quality Index (WQI). WQI uses factors specific weights to calculate water index.

Dissolved oxygen (0.17)

Fecal coliform (0.16)

pH (0.11)

Biochemical oxygen demand (0.11)

Harry Barton Essel

Adel Oueslati

Dear Harry,

Thanks a lot for your reply. Is it possible to help me to calcilate WQI?

With my best wishes!

Adel OUESLATI

Aparna Sathya Murthy

Online calculators :

https://thewqiproject.org/calculator/

http://www.keithalcock.com/creeks/wqi.shtml

http://www.csgnetwork.com/h2oqualindextemponlycalc.html

Dear Dr. Aparna,

Thanks so much for the reply and the links.

Jack Son

edo.jrc.ec.europa.eu/documents/factsheets/factsheet_ndwi.pdf

Saad Kariem Shather

I follow the link above.

thanks