Rocky Valley Dam
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| Rocky Valley Dam | |
|---|---|
 The dam wall and reservoir, in April 2014. The reservoir water level is relatively low. | |
  Rocky Valley Dam Location of the dam in Victoria | |
 Interactive map of Rocky Valley Dam | |
| Country | Australia |
| Location | Bogong High Plains, Victoria |
| Coordinates | 36°52′27″S 147°17′38″E / 36.874197°S 147.294002°E |
| Purpose | Power |
| Status | Operational |
| Construction began | 1954 |
| Opening date | 1960 |
| Built by | State Electricity Commission of Victoria |
| Operator | AGL Energy |
| Dam and spillways | |
| Type of dam | Rock-fill dam |
| Impounds | East Kiewa River |
| Height (foundation) | 32 m (105 ft) |
| Length | 518 m (1,699 ft) |
| Dam volume | 459×103 m3 (16.2×106 cu ft) |
| Spillway type | Uncontrolled |
| Spillway capacity | 85 m3/s (3,000 cu ft/s) |
| Reservoir | |
| Total capacity | 28.37 GL (23,000 acre⋅ft) |
| Catchment area | 20 km2 (7.7 sq mi) |
| Surface area | 265 ha (650 acres) |
| Normal elevation | 1,594 m (5,230 ft) AHD |
| Mackay Creek Power Station | |
| Coordinates | 36°51′31″S 147°14′03″E / 36.85849°S 147.23424°E |
| Operator | AGL Energy |
| Commission date | c. 1960 |
| Type | Conventional hydroelectric |
| Turbines | 6 x 25 MW (34,000 hp) Pelton wheel |
| Installed capacity | 150 MW (200,000 hp) |
| 2015 generation | 103 GWh (370 TJ) |
| Website agl | |
The Rocky Valley Dam is a rock-filled embankment dam across the East Kiewa River, located on the Bogong High Plains, near Falls Creek, Victoria, Australia. Situated near the Falls Creek Alpine Resort, the dam is used for the generation of hydroelectricity for the Mackay Creek Power Station, one of the four conventional hydroelectric power stations that form part of the Kiewa Hydroelectric Scheme.
Hydroelectricity
The dam is 32 metres (105 ft) high and 518 metres (1,699 ft) long, and is situated at 1,594 metres (5,230 ft) AHD. The resultant 28.37-gigalitre (23,000 acre⋅ft) reservoir draws from a 20-hectare (49-acre) catchment area.[1][2] The dam wall is traversable in all seasons.
The dam was funded and built by the State Electricity Commission of Victoria for the Kiewa Hydroelectric Scheme. Construction begun in 1954 and was completed in 1960.[3] The dam and adjacent hydroelectric power station has been owned and operated by AGL Energy since 1991.
The reservoir at Rocky Valley Dam and a diversion from the reservoir at Pretty Valley Dam, together supply water for the Mackay Creek Power Station, via 5.5 kilometres (3.4 mi) of sub-terrainan tunnels, 1,250 metres (4,100 ft) of surface pipeline, and a steel-lined pressure tunnel. The Mackay Creek Power Station is located 80 metres (260 ft) underground on the slopes of Mount McKay. Water discharged from the McKay Creek Power Station flows down the Pretty Valley branch of East Kiewa River to Bogong,[4] and, since 2009, has been used by the Bogong Hydropower Project.[5] The station has capacity for 150 megawatts (200,000 hp) and, in 2015, generated 103 gigawatt-hours (370 TJ) per annum.[1]
Water from the reservoir is also utilised in snow making in winter for the Falls Creek Alpine Resort.
