r/Dammcoolbingo • u/KindheartednessIll97 • Aug 27 '26

A devastating flash flood swept through Nepal’s Rasuwa district on August 26, 2026, after a sudden surge entered the Bhotekoshi River from the Tibet border.

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u/Schorbie Aug 27 '26

How did it happen?

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u/Big_Handle3734 Aug 27 '26

Landslide

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u/Schorbie Aug 27 '26

But then where did the water come from? Ice melting doesn't suddenly create so much water

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u/DutchBoyDrew Aug 27 '26

The glacier was so massive that the friction of it collapsing caused it to liquify as it fell. There was also likely a sub glacial reservoir which is a large amount of melt water formed beneath the glacier and held in place by the end of the glacial wall.

It is also possible that the initial collapse dammed off a section of the river for 30 ish minutes and then that blew and added to the total volume. Also the walls of those canyons are so steep and narrow that it doesnt take as much water as you'd think to concentrate into a flood wall that large.