 The ideal place for the dam was over the Lar river, in the northeast section of the city, at the elevated heights of the "Kalanbasteh" mountain on the slope of Mount Damavand.The area is called Polour, and operations began in 1984.One of the aims for building the Lar dam was to supply part of Amol with drinking water; it was not possible initially to operate the dam at its nominal capacity, because of a water seepage problem.