| Middle River Dam | |
|---|---|
  Middle River Dam Location of the dam in South Australia | |
| Location | Kangaroo Island, South Australia |
| Coordinates | 35°43′08″S 137°05′46″E / 35.719°S 137.096°E |
| Purpose | Water supply |
| Status | Operational |
| Opening date | 1968 |
| Owner | Government of South Australia |
| Operator | SA Water |
| Dam and spillways | |
| Type of dam | Gravity dam |
| Impounds | Middle River |
| Height (foundation) | 20 m (66 ft) |
| Length | 152 m (499 ft) |
| Dam volume | 7×103 m3 (250×103 cu ft) |
| Spillway type | Uncontrolled |
| Spillway capacity | 245 m3/s (8,700 cu ft/s) |
| Reservoir | |
| Creates | Middle River Reservoir |
| Total capacity | 540 ML (440 acre⋅ft) |
| Active capacity | 470 ML (380 acre⋅ft) |
| Catchment area | 101 km2 (39 sq mi) |
| Surface area | 12.7 ha (31 acres) |
The Middle River Dam is a gravity dam across the Middle River, located on the north of Kangaroo Island in South Australia. Completed in 1968, its resultant reservoir, the Middle River Reservoir, provides potable water for the island community.
