| Chirkey Dam | |
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| Official name | Chirkeisk GES |
| Country | Russia |
| Location | Dagestan |
| Coordinates | |
| Status | In use |
| Construction began | 1964 |
| Opening date | 1978 |
| Owner(s) | RusHydro |
| Dam and spillways | |
| Type of dam | Arch |
| Height | 232.5 m (763 ft) |
| Length | 338 m (1,109 ft) |
| Crest width | 6 m (20 ft) |
| Base width | 30 m (98 ft) |
| Volume | 1,275,000 m3 (45,026,200 cu ft) |
| Impounds | Sulak River |
| Spillways | 1 |
| Type of spillway | Service, flood discharge tunnel |
| Spillway capacity | 2,900 m3/s (102,413 cu ft/s) |
| Reservoir | |
| Creates | Chirkey Reservoir |
| Capacity | 2,780,000,000 m3 (2,253,783 acre·ft) |
| Catchment area | 11,290 km2 (4,359 sq mi) |
| Surface area | 42.4 km2 (16 sq mi) |
| Max. water depth | 200 m (656 ft) |
| Power station | |
| Commission date | 1974-1976 |
| Hydraulic head | 205 m (673 ft) (max.) |
| Turbines | 4 x 250 MW |
| Installed capacity | 1,000 MW |
| Annual generation | 2.47 billion kWh |
The Chirkey Dam (Chirkeisk GES) is an arch dam on the Sulak River in Dagestan, Russia. The main purpose of the dam is hydroelectric power production and it supports a 1,000 MW power station. Construction on the dam began in 1964, the first generator was operational by 1974, the last in 1976 while the project was complete in 1978.
Contents |
The dam is a 232.5 m (763 ft) tall and 338 m (1,109 ft) long (crest) concrete arch dam. It is 6 m (20 ft) wide at its crest, 30 m (98 ft) wide at its base and contains 1,275,000 m3 (45,026,200 cu ft) of concrete. The dam withholds a 2,780,000,000 m3 (2,253,783 acre·ft) reservoir of which 1,320,000,000 m3 (1,070,141 acre·ft) is active or "useful" storage. The reservoir has a surface are of 42.4 km2 (16 sq mi), length of 40 km2 (15 sq mi) and maximum width of 5 km2 (2 sq mi). Maximum depth of the reservoir is 200 m (656 ft) and its catchment area is 11,290 km2 (4,359 sq mi).[1][2]
The dam's spillway consists of a 509 m (1,670 ft) long non-pressure tunnel with its intake on the left bank of the dam. The spillway's capacity is 2,900 m3/s (102,413 cu ft/s). The dam's outlet works, spillway and power station have a combined discharge capacity of 3,550 m3/s (125,367 cu ft/s).[1]
The dam's power station contains 4 x 250 MW generators for a total installed capacity of 1,000 MW. Each generator is supplied with water by a penstock, all four of which intake on the upstream side of the dam's face and run down the its surface toward the power station at the dam's base.[1]