Spelga Reservoir

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.

Spelga Reservoir
LocationCounty Down, Northern Ireland
Coordinates54°10′25″N 6°3′38″W
Typereservoir
Catchment area1,340 acres (5.4 km2)
Basin countriesUnited Kingdom
Water volume600×10^6 imp gal (2,700,000 m3)
Surface elevation~ 1,200 ft (370 m)
Islandsnone

The reservoir and dam were built as part of a project that had origins in the idea of supplying water to Belfast, in 1894. The Spelga Reservoir itself was developed between 1953 and 1957. As part of the construction, the B27 road was rebuilt above the reservoir to replace the original road submerged by the construction.[1] The Dam was designed by the Belfast engineering firm of R. Ferguson and S. McIlveen and construction was undertaken by John Laing & Sons.[2][3]

The Portadown and Banbridge areas receive their water supply from the reservoir. Whilst it has not been stocked with fish for some years, it is home to wild trout.[4]

In 2018[5] and again in 2020[6], heatwaves and dry weather caused the water level to drop. This exposed a portion of the original road through the Deers Meadow, including a bridge which was formerly the first bridge on the River Bann.


References
  1. "Newry & Mourne - The pet lamb". Newry Democrat (online archives). April 2006. Archived from the original on 22 June 2011. Retrieved 23 September 2008.
  2. Ritchie, p. 126
  3. Not known, Simon. "Spelga Dam and Reservoir". Archived from the original on 6 November 2014. Retrieved 14 September 2012.
  4. "Mourne Mountains.com". Archived from the original on 2017-08-09. Retrieved 2017-08-09.
  5. McDowell, Iain (2018-07-11). "Heatwave uncovers submerged Mourne history". BBC News. Retrieved 2018-07-12.
  6. "NI Water's warning over shortages as demand outstrips supply in Covid-19 lockdown". Belfast Telegraph. 2020-05-31. Retrieved 2020-06-15.

Sources
  • Ritchie, Berry (1997). The Good Builder: The John Laing Story. James & James.
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