| Eucumbene Dam | |
|---|---|
 Lake Eucumbene looking towards the Snowy Mountains, 2012. | |
  Location of Eucumbene Dam in New South Wales | |
| Country | Australia |
| Location | Snowy Mountains, New South Wales |
| Coordinates | 36°07′42″S 148°36′57″E / 36.12843°S 148.61575°E |
| Purpose | Hydro-power, diversion, irrigation |
| Status | Operational |
| Construction began | May 1956 |
| Opening date | May 1958 |
| Owner(s) | Snowy Hydro |
| Dam and spillways | |
| Type of dam | Embankment dam |
| Impounds | Eucumbene River |
| Height | 116 m (381 ft) |
| Length | 579 m (1,900 ft) |
| Elevation at crest | 1,168 metres (3,832 ft) AHD |
| Width (base) | 686 m (2,251 ft) |
| Dam volume | 6,735,000 m3 (237,800,000 cu ft) |
| Spillways | 1 |
| Spillway type | Overflow ski-jump and bucket with two vertical lift gates |
| Spillway capacity | 475 m3/s (16,800 cu ft/s) |
| Reservoir | |
| Creates | Lake Eucumbene |
| Total capacity | 4,798 GL (1.055×1012 imp gal; 1.267×1012 US gal) (4.798 km3; 3,890,000 acre⋅ft) |
| Active capacity | 4,366.5 GL (9.605×1011 imp gal; 1.1535×1012 US gal) (4.3665 km3; 3,540,000 acre⋅ft) |
| Catchment area | 683 km2 (264 sq mi) |
| Surface area | 14,542 ha (35,930 acres) |
| Maximum water depth | 107 m (351 ft) |
| Website Eucumbene Dam at the Powerhouse Museum. | |
Eucumbene Dam is a major gated earthfill embankment dam with an overflow ski-jump and bucket spillway with two vertical lift gates across the Eucumbene River in the Snowy Mountains of New South Wales, Australia. The dam's main purpose is for the generation of hydro-power and is one of the sixteen major dams that comprise the Snowy Mountains Scheme, a vast hydroelectricity and irrigation complex constructed in south-east Australia between 1949 and 1974 and now run by Snowy Hydro.
The impounded reservoir is called Lake Eucumbene, the largest storage lake in the Snowy Mountains Scheme.