Ewen Maddock Dam
| Ewen Maddock Dam | |
|---|---|
Location of the Ewen Maddock Dam in Queensland | |
| Country | Australia |
| Location | Landsborough, South East Queensland |
| Coordinates | 26°40′51″S 153°0′22″E / 26.68083°S 153.00611°E |
| Purpose | Potable water supply |
| Status | Operational |
| Construction began | 1973 |
| Opening date | 1976; upgrade 1982 |
| Operator(s) | SEQ Water |
| Dam and spillways | |
| Type of dam | Embankment dam |
| Impounds | Addlington Creek |
| Height | 11.4 m (37 ft) |
| Length | 660–728 m (2,165–2,388 ft) |
| Dam volume | 352×103 m3 (12.4×106 cu ft) |
| Spillway type | Uncontrolled |
| Spillway capacity | 132 m3/s (4,700 cu ft/s) |
| Reservoir | |
| Total capacity | 16,587 ML (3.649×109 imp gal; 4.382×109 US gal) |
| Catchment area | 21 km2 (8.1 sq mi) |
| Surface area | 397 ha (980 acres) |
| Maximum length | 3.1 m (10 ft) |
| Maximum width | 2.6 m (8 ft 6 in) |
| Maximum water depth | 4.5 m (15 ft) |
| Website www.seqwater.com.au | |
The Ewen Maddock Dam is an earth-fill embankment dam with an un-gated spillway across the Addlington Creek that is located in Landsborough in the South East region of Queensland, Australia. The main purpose of the dam is for potable water supply of the Sunshine Coast region.