Availability of Drainage map of Kolkata City?

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Eneche Patrick Samson Udama

You can generate this map easily from an existing Digital Elevation Model (DEM), even if it does not exist for your city.

Sovan Sankalp

Dear Eneche Patrick Sir

I want the storm water and sewerage drainage map. How can we extract using DEM. If possible send me some video links or work files that may help my purpose.

Thank You.

Storm Water and sewage data is more than the ordinary drainage (morphometry) I envisaged of your need. You can make good headway on these type of data by speaking with experts in urban planning and management in your country. Cheers.