| Silveh Dam | |
| Location Map: | Iran |
| Coordinates: | 36.7834°N 45.1131°W |
| Country: | Iran |
| Location: | Lahijan-e Gharbi Rural District, Lajan District, Piranshahr County, West Azerbaijan Province, Iran |
| Purpose: | Inter basin transfer, Irrigation |
| Status: | Operational |
| Construction Began: | 2004 |
| Opening: | 2015 |
| Owner: | Regional Water Company of West Azerbaijan |
| Dam Type: | Embankment, earth-fill |
| Dam Crosses: | Lavin River |
| Dam Length: | 731m (2,398feet) |
| Dam Height Foundation: | 92m (302feet) |
| Dam Height Thalweg: | 93m (305feet) |
| Spillway Type: | Uncontrolled, service |
| Spillway Capacity: | 1040m3/s |
| Res Name: | Silveh Reservoir |
| Res Capacity Total: | 163000000m2 |
The Silveh Dam (Persian: سد سیلوه) is an earth-fill embankment dam on the Lavin River just downstream of the village of Silveh in Piranshahr County, West Azerbaijan Province, Iran. The primary purpose of the dam is interbasin transfer for irrigation. Since completion, a tunnel and canals shift water from the reservoir north to the Chaparabad area. The project essentially transfers water from the Little Zab River basin to the Lake Urmia basin in an effort to help replenish the lake and irrigate about 9400ha of farmland. Construction on the dam began in 2004 and it was expected to be complete by the end of 2015.[1] [2] The dam was effectively completed as of 2018.[3] The village of Silveh will be flooded when the reservoir is impounded.[4]
The dam is 102m (335feet) above its foundation with a length of 750m (2,460feet). It has an uncontrolled spillway with a maximum discharge capacity of 1040m3/s. The reservoir created by the dam will store 163000000m2 of water. Near the northeastern edge of the reservoir water will be able to enter a 841m (2,759feet) long tunnel which will discharge it into the opposing valley, within the Lake Urmia basin. About 121700000m2 of water will be transferred through the tunnel annually while an estimated 10800000m2 will be sent downstream to Piranshahr during the same period.[5]