Skip to main content

Probing Reservoir Triggered Earthquakes at Koyna, India through Scientific Deep Drilling

Project Acronym: KOYNA | State: Post Moratorium | Expedition ID: 5058

The Koyna Dam located close to the west coast of India is the most outstanding example of Reservoir Triggered Seismicity RTS.

Triggered earthquakes have been occurring in a restricted area of 20x30 sq km since the impoundment of Shivajisagar Lake in 1962. These include the largest triggered earthquake of M~6.3 on Dec 10 1967, 22 earthquakes of M>5, about 200 earthquakes of M~4, and several thousand smaller earthquakes since 1962. The earthquake frequency increases every year following the monsoon rains in the months of June and July; almost every year one or more M~4 earthquakes occur. There is no other source of seismic activity within 50 km of the Koyna Dam.

Keywords: Asia, India, Deep Borehole Observatory, Koyna, Reservoir-triggered Seismicity

Project Details

Project Location

Project Timeline

Post Drilling Workshop

14 - 16 October 2017 in Pune, India


20 December 2016 - 11 June 2017

Full Proposal Approved

Workshop 2 Held

16 - 18 May 2014 in Koyna, India

Workshop Proposal 2 Approved

Workshop 1 Held

21 - 25 March 2011 in Koyna, India

Workshop Proposal 1 Approved

Preliminary Proposal Submitted