| Spelga Reservoir | |
|---|---|
 | |
  Spelga Reservoir | |
| Location | County Down, Northern Ireland |
| Coordinates | 54°10′25″N 6°3′38″W / 54.17361°N 6.06056°W |
| Type | reservoir |
| Catchment area | 1,340 acres (5.4 km2) |
| Basin countries | United Kingdom |
| Water volume | 600×106 imp gal (2,700,000 m3) |
| Surface elevation | ~ 1,200 ft (370 m) |
| Islands | none |
Spelga Reservoir is a reservoir in the townland of Spelga (Irish: Speilgeach, meaning 'abounding in pointed rocks') in the Mourne Mountains of County Down, Northern Ireland. It was formed by the Spelga Dam and sits at over 1,200 ft (370 m) above sea level. It has a volume of 2,700,000 cubic metres and a catchment area of 5.423 km2. It occupies an area known as Deers Meadow, and impounds the River Bann, which rises on the nearby Slieve Muck.