| latyan Dam | |
|---|---|
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  Location of latyan Dam in Iran | |
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| Official name | سد لتیان |
| Location | Lavasan,Tehran Province,Iran |
| Purpose | Water supply, power |
| Status | Operational |
| Construction began | 1963 |
| Opening date | 1967 |
| Dam and spillways | |
| Impounds | Jajrood River |
| Height | 107 m (351 ft) |
| Length | 450 m (1,480 ft) |
| Width (base) | 99 m (325 ft) |
| Reservoir | |
| Total capacity | 95,000,000 m3 (77,000 acre⋅ft) |
| Commission date | 1969/1987 |
| Type | Conventional |
| Turbines | 2 x 22.5MW |
| Installed capacity | 45 MW |
| Website https://thrw.ir/st/66 | |
Latyan Dam (Persian:سد لتيان, alsoRomanized asSadd-e Latyān) is abuttress dam on theJajrood River, located less than 25 km fromTehran in the south of city ofLavasan. It is one of the main sources of water forTehran metropolitan region. It was constructed between 1963 and 1967. The first generator in the dam's 45 MWhydroelectric power station was commissioned on 17 March 1969, the second on 13 April 1987.[1]
Jajrood River basin is located in the southern part of centralAlborz mountain range, the rocks of which date from thePalaeozoic era up to theQuaternary period, as below:
| Map of centralAlborz | Peaks: | 1Alam-Kuh |
|---|---|---|
 −25 to 500 m (−82 to 1,640 ft) 500 to 1,500 m (1,600 to 4,900 ft) 1,500 to 2,500 m (4,900 to 8,200 ft) 2,500 to 3,500 m (8,200 to 11,500 ft) 3,500 to 4,500 m (11,500 to 14,800 ft) 4,500 to 5,610 m (14,760 to 18,410 ft) | 2Azad Kuh | 3Damavand |
| 4Do Berar | 5Do Khaharan | |
| 6Ghal'eh Gardan | 7Gorg | |
| 8Kholeno | 9Mehr Chal | |
| 10Mishineh Marg | 11Naz | |
| 12Shah Alborz | 13Sialan | |
| 14Tochal | 15Varavašt | |
| Rivers: | 0 | |
| 1Alamut | 2Chalus | |
| 3Do Hezar | 4Haraz | |
| 5Jajrood | 6Karaj | |
| 7Kojoor | 8Lar | |
| 9Noor | 10Sardab | |
| 11Seh Hazar | 12Shahrood | |
| Cities: | 1Amol | |
| 2Chalus | 3Karaj | |
| Other: | DDizin | |
| EEmamzadeh Hashem | KKandovan Tunnel | |
| *Latyan Dam | **Lar Dam |
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