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Ancient Tamil Water System That Stopped Floods & Droughts | Tank Cascade Engineering Explained।#eri

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“Rain came hard…
and vanished just as fast into the sea.
Months later, fields cracked and villages went thirsty.”

Ancient Tamil farmers realized something powerful:
the problem was not lack of water —
the problem was that water didn’t stay.

So they created one of the world’s smartest water systems —
the Eri System, now known as the Tank Cascade System.

Instead of storing rainwater in one place,
they connected small and large earthen tanks (Eris)
so excess water from one tank
slowly flowed into the next.

🌧️ First tank fills
➡️ overflow moves gently to the next
➡️ no flooding
➡️ no waste
➡️ every field gets water

This system didn’t just irrigate crops:
✔️ It recharged groundwater
✔️ Prevented floods
✔️ Protected villages during dry seasons
✔️ Worked without pumps or machines

No electricity.
No motors.
Just slope, soil, and gravity.

Today, engineers call it a
Tank Cascade System.
For ancient Tamil society,
it was simply the art of living with water.

This wasn’t just farming…
this was water wisdom carved into the land. 🇮🇳✨

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