All large dams have finite life. What happens to the dams once the useful life of a dam is over? It would need to be decommissioned. Decommissioning of a dam generally refers to[i] complete removal of the dam and its associated structures. This is a very relevant question for India as the third largest dam builder of the world. It becomes even more important as large dams are no longer required or are no longer viable and importance of a flowing river is increasingly appreciated. It needs to be kept in mind that a dam cannot be allowed to remain on the river, without proper maintenance, as such a dam would remain a huge safety hazard for society and economy downstream from the dam.