| Toonumbar Dam | |
|---|---|
 Toonumbar Dam viewed from Bells Bay Camping Area | |
  Location of the Toonumbar Dam in New South Wales | |
| Country | Australia |
| Location | Northern Rivers, New South Wales |
| Coordinates | 28°37′16″S 152°47′29″E / 28.62111°S 152.79139°E |
| Purpose | Hydro-power, irrigation, water supply and conservation |
| Status | Operational |
| Construction began | 1969 |
| Opening date | 1971 |
| Owner(s) | State Water Corporation |
| Dam and spillways | |
| Type of dam | Embankment dam |
| Impounds | Iron Pot Creek |
| Height | 44 metres (144 ft) |
| Length | 229 metres (751 ft) |
| Dam volume | 361 cubic metres (12,700 cu ft) |
| Spillways | 1 |
| Spillway type | Concrete chute |
| Spillway capacity | 1,700 cubic metres per second (60,000 cu ft/s) |
| Reservoir | |
| Creates | Lake Toonumbar |
| Total capacity | 1,100 megalitres (39×106 cu ft) |
| Catchment area | 98 square kilometres (38 sq mi) |
| Surface area | 320 hectares (790 acres) |
| Maximum water depth | 34 metres (112 ft) |
| Normal elevation | 129.6 metres (425 ft) AHD |
| Power Station | |
| Type | Conventional |
| Installed capacity | 0.1 megawatts (130 hp) |
| Website Toonumbar Dam at www.statewater.com.au | |
Toonumbar Dam is a minor ungated rock fill with clay core embankment dam with a concrete chute spillway across the Iron Pot Creek north-west of Casino in the Northern Rivers region of New South Wales, Australia. The dam's purpose includes hydro-power, irrigation, water supply, and conservation. The impounded reservoir is called Lake Toonumbar.