The magnitude 6.6 shock hit with a maximum Mercalli intensity of VIII (Severe).

It occurred near the site of Koyna dam, raising questions about induced seismicity, and claimed at least 177 lives and injured over 2,200.

The earthquake caused a 10–15 cm (3.9–5.9 in) fissure in the ground which spread over a length of 25 kilometers (16 mi).

Some geologists believe that the earthquake was due to reservoir-triggered seismic activity,[4] but senior project officials have repeatedly denied this conclusion.

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