Lar Dam (Persian: سد لار sad-de lār) is a dam Amol located in foot of Mount Damavand, Amol. It is one of the main sources of water for Tehran metropolitan region.Construction
In the wake of the Amol water need increase, study and construction phases of an earth dam over the Lar river, in northeast of the city, on the elevated heights of the Kalanbasteh mountain, on the slope of Mount Damavand, in an area called Polour, at kilometer 65 of the Haraz Road (between AMOL and the city of Amol) started in 1974. The dam's construction work ended in 1981 and it started operation in 1984.
One of the aims for building the Lar dam was to supply part of Amol drinking water need; it was not possible then to operate the dam at its nominal capacity however, because of water seepage problem. Water stored in the dam's reservoir is transferred to the Kalan and Lavark power plants, a distance of 3 kilometers from the Latyan Dam's reservoir, through the 20 kilometer long Kalan tunnel (3 meters in size). After electricity generation, the water joins and feeds the Latyan dam's reservoir.
Uncontrolled growth and expansion of Tehran created such a situation that the existing water resources, i.e., Karaj, Latyan and Lar dams and the deep wells, which were supposed to be exploited only in the mounts of peak water consumption, were no longer capable of meeting the city's water demand, so inevitable abstraction from ground resources started to increase in a manner that at present situation, the quantity of drilled deep wells has amounted to 230 rings. In fact, in 1997, 1998, 1999 and 2000, it had been orderly abstracted, 317, 289, 374 and 357 Mm3 of water from groundwater resources of the city.The Lake
This lake is at a distance of 84 km from Tehran and due to its proximity to Mount Damavand experiences a cool and pleasant climate as well as beautiful landscapes. The lake provides the scope for water sports such as swimming and skiing.Location in Central Alborz