After making one for Europe – you can see it [here](https://www.perrinremonte.com/thema-eng), on my website – I decided to make another for South Asia, a.kl.a, the Indian Subcontinent!
Data is from [Hydroshed](https://www.hydrosheds.org/), I processed it with QGIS and used Adobe Illustrator for the graphic design!
Let’s follow together a raindrop’s journey though South Asia by visuliasing the watersheds… I love how the geography of India, especially with the Wester Ghats, make for an unexpected pattern of drainage areas, while there are hundreds of thousands of square kilometres of endorheic basin to the north of the very populous Indus and Ganges valley.
Beautiful. Great work. I am happy to overlook few spelling and naming issues which seems to stem from translation.
If you think of rivers = roads (which they have been long ago) you can see here also two political / civilization corridors – indus/ Arabian Sea & Ganges/ bengal
No outlet to the ocean, how does that work? There is little enough rain that it evaporates before it has a chance to get away from lakes and rivers between them?
Very cool, keep up the good work!
Sri Lanka’s western rivers (Kelani ganga, Malwathu oya, Maduru oya, Kalu ganga, Bentara ganga) flow to the Mannar Basin/ Arabian Sea but colored in red
SL Irrigation Department River basin map – https://www.irrigation.gov.lk/web/images/Hydrological-Annual/11_Hydrological_2017-2018.pdf
![A Raindrop's journey through South Asia [OC]](https://www.europesays.com/wp-content/uploads/2025/09/1757239091_t7d9eeyjzmnf1-1920x1024.png)
5 comments
After making one for Europe – you can see it [here](https://www.perrinremonte.com/thema-eng), on my website – I decided to make another for South Asia, a.kl.a, the Indian Subcontinent!
Data is from [Hydroshed](https://www.hydrosheds.org/), I processed it with QGIS and used Adobe Illustrator for the graphic design!
Let’s follow together a raindrop’s journey though South Asia by visuliasing the watersheds… I love how the geography of India, especially with the Wester Ghats, make for an unexpected pattern of drainage areas, while there are hundreds of thousands of square kilometres of endorheic basin to the north of the very populous Indus and Ganges valley.
Fellow map enthousiasts, hope you like the map, there are more on my [website](https://www.perrinremonte.com/fraccueil-1) (much more user friendly on a laptop!
Beautiful. Great work. I am happy to overlook few spelling and naming issues which seems to stem from translation.
If you think of rivers = roads (which they have been long ago) you can see here also two political / civilization corridors – indus/ Arabian Sea & Ganges/ bengal
No outlet to the ocean, how does that work? There is little enough rain that it evaporates before it has a chance to get away from lakes and rivers between them?
Very cool, keep up the good work!
Sri Lanka’s western rivers (Kelani ganga, Malwathu oya, Maduru oya, Kalu ganga, Bentara ganga) flow to the Mannar Basin/ Arabian Sea but colored in red
SL Irrigation Department River basin map – https://www.irrigation.gov.lk/web/images/Hydrological-Annual/11_Hydrological_2017-2018.pdf
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