How a Dam Caused a Deadly Earthquake

Added: 2026-05-19

[00:00:00]Scientists just proved that humanity accidentally triggered one of the deadliest earthquakes of the century by filling a reservoir. A fault locked for 2,000 years broke because of water weight. In 2008, the Sichuan earthquake devastated [music] China, killing 87,000 people and shaking five entire countries. But here's what most people [music] don't know. Researchers traced it directly back to two massive dams, the Zipingpu reservoirs.

[00:00:26]When these reservoirs filled with water, they added crushing pressure onto a critically stressed fault line running beneath them. We're talking less than 1/10 of a megapascal, basically nothing in engineering terms. But that tiny pressure increase [music] was enough to unlock 2,000 years of built-up tension and trigger a catastrophic rupture.

[00:00:44]The evidence is so [music] solid that seismologists now believe reservoir-induced stress changes can actually alter earthquake timing [music] and location.

[00:00:53]This means every time we build a major dam near a fault line, [music] we're gambling with millions of lives.

[00:00:59]Humanity didn't just witness a natural disaster that day, we engineered it.