Wyangala Dam
| Wyangala Dam | |
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Wyangala Dam, near full capacity, 2012
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 Location of the Wyangala Dam in
New South Wales |
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| Location | New South Wales, Australia |
| Coordinates | 33°57′S 148°59′E / 33.950°S 148.983°ECoordinates: 33°57′S 148°59′E / 33.950°S 148.983°E |
| Status | Operational |
| Construction began | 1928 |
| Opening date | 1935 |
| Construction cost | A£1.352 million |
| Owner(s) | State Water Corporation |
| Dam and spillways | |
| Type of dam | Embankment dam |
| Impounds | Lachlan River |
| Height | 85 m (279 ft) |
| Length | 1,370 m (4,490 ft) |
| Dam volume | 3,580 m3 (126,000 cu ft) |
| Spillways | 9 |
| Spillway type | Radial gates and concrete chute |
| Spillway capacity | 14,700 m3/s (520,000 cu ft/s) |
| Reservoir | |
| Creates | Lake Wyangala |
| Total capacity | 1,220,000 ML (43,000×106 cu ft) |
| Catchment area | 8,300 km2 (3,200 sq mi) |
| Surface area | 5,390 ha (13,300 acres) |
| Maximum water depth | 79 m (259 ft) |
| Normal elevation | 379 m (1,243 ft) AHD |
| Power station | |
| Type | Conventional |
| Installed capacity | 18 MW (24,000 hp) |
| Annual generation | 42.9 GWh (154 TJ) |
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Website Wyangala Dam at www |
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Wyangala Dam is a major gated rock fill with clay core embankment and gravity dam with eight radial gates and a concrete chute spillway across the Lachlan River, located in the south-western slopes region of New South Wales, Australia. The dam's purpose includes flood mitigation, hydro-power, irrigation, water supply and conservation. The impounded reservoir is called Lake Wyangala.
Commenced in 1928, completed in 1935, and upgraded in 1971, Wyangala Dam is a major reservoir situated below the confluence of the Lachlan and Abercrombie rivers, located approximately 38 km (24 mi) upstream, east of Cowra. The dam was built by the New South Wales Water Conservation & Irrigation Commission to supply water for irrigation, flood mitigation and potable water for the towns of Cowra, Forbes, Parkes, Condobolin, Lake Cargelligo, Euabalong and Euabalong West. The dam also provides water for a far larger area and operates in conjunction with Lake Brewster and Lake Cargelligo, to supply water to the lower Lachlan valley customers.
The dam wall constructed with 3,580 m3 (126,000 cu ft) of rockfill and a clay core is 85 m (279 ft) high and 1,370 m (4,490 ft) long. The maximum water depth is 79 m (259 ft) and at 100% capacity the dam wall holds back 1,220,000 ML (43,000×106 cu ft) of water at 379 m (1,243 ft) AHD. The surface area of Lake Wyangala is 5,390 ha (13,300 acres) and the catchment area is 8,300 km2 (3,200 sq mi). The eight radial gates and concrete chute of the spillway are capable of discharging 14,700 m3/s (520,000 cu ft/s). A A$43 million upgrade of facilities commenced in 2009 and, when completed by 2016, is expected to result in the raising and locking of the spillway radial gates; raising of the spillway chute wall; and raising of the parapet wall crest.
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Wikipedia