Coordinates: 51°38′04″N 1°21′15″W / 51.63444°N 1.35417°W / 51.63444; -1.35417

Abingdon Reservoir

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Abingdon Reservoir
2023 Illustration by Thames Water of the conceptual design and location for a 150 Mm3 reservoir.[1]
Map of Oxfordshire
Map of Oxfordshire
Abingdon Reservoir
LocationOxfordshire
Coordinates51°38′04″N 1°21′15″W / 51.63444°N 1.35417°W / 51.63444; -1.35417
Lake typeBunded reservoir (Proposed)
Primary inflowsRiver Thames
Primary outflowsRiver Thames
Basin countriesUnited Kingdom
Surface area6.7 km2 (670 ha; 1,700 acres)
Average depth22.4 m (73 ft)
Water volume150 million cubic metres (150 billion litres; 33 billion imperial gallons; 0.15 cubic kilometres; 0.036 cubic miles)

The Abingdon Reservoir (also known as the South East Strategic Reservoir Option, or SESRO)[2] is a long-term proposal for fresh water storage for the Home Counties. Located south west of Abingdon, Oxfordshire in the mid-west of the Thames Basin, it is intended to help support water supply provision in the south-east of England.

Proposals

The proposal arose in 2006 by Thames Water.[3] In 2007 the Environment Agency opined that need for this was not proven.[4] Further arguments were put but the near-term-demand case was rejected in 2011.[5] In 2023, following a period of consultation, a revised version increased the proposal to 150 billion litres (150 million cubic metres; 33 billion imperial gallons).[6]

This would make Abingdon the second-largest reservoir in England by capacity, exceeded only by Kielder Water at 200 billion litres (200 million cubic metres; 44 billion imperial gallons), pushing Rutland Water into third place at 124 billion litres (124 million cubic metres; 27 billion imperial gallons). Across the whole of the UK, only seven Scottish lochs have greater freshwater storage by volume.

Since 2018, a longer-term proposal stands, for its building, by 2043 to cater to projected population growth in the Thames Basin.[7][8]

Reasons for the construction

See also: Climate of the United Kingdom and Population of the United Kingdom

The main reason to build is that the South-East is facing significant seasonal water stress. Factors are the rain shadow behind the prevailing westerly winds and western hills. Eastern counties lack the rainfall of the west; their average annual rainfall being 500-750mm. The west receives around 1800-2800mm.

Average population density is higher in the eastern than western counties; London houses 13.5% of the UK's population. This is the greatest concentration of domestic water usage. Roughly 22% of water use is domestic; 75% is from all types of industry.[citation needed]

Counter-arguments

GARD or the 'Group Against Reservoir Development' have counter-arguments, local, national, and international comparators.[9]

  • Thames Water have unambitious targets for leakages[9]
  • The reservoir will be far from potent against long droughts[10]
  • As there is enough water to supply London now there can be in future using other, sustainable methods.[9]
  • Impacts on the ecosystem being transformed from supporting many endangered and protected land-based invertebrates, water voles, bats and hedgehogs to more water-based bird life.[9]
  • Traffic congestion and construction pollution.[9]
  • Local economic loss of many well-rooted businesses and a solar farm.[11][9]
  • A new, low, risk of flooding.[9]


See also

References

  1. ^ "New reservoir in Abingdon | Water resources". Thames Water. Retrieved 2023-09-08.
  2. ^ "South East Strategic Reservoir Option (SESRO) – a new reservoir for the south east". Thames Water Resources Management Plan. 2024-01-29. Retrieved 2024-03-05.
  3. ^ Reservoir 'biggest in 25 years' - BBC News, 14 September 2006
  4. ^ "Need for reservoir 'not proven'". BBC News. 5 January 2007. Retrieved 30 August 2009.
  5. ^ "Abingdon £1bn reservoir plan rejected by government". BBC News. 4 March 2011. Retrieved 7 May 2018.
  6. ^ Inman, Phillip (2023-04-22). "Lake or mistake? The row over water firms, drought and Abingdon's new super-reservoir". The Observer. ISSN 0029-7712. Retrieved 2023-09-12.
  7. ^ "Abingdon reservoir proposals questioned by Oxfordshire County Council". BBC News. 18 April 2018. Retrieved 7 May 2018.
  8. ^ "Abingdon Reservoir back on the cards!". CPRE. 19 February 2018. Retrieved 7 May 2018.
  9. ^ a b c d e f g http://www.abingdonreservoir.org.uk/ Group Against Reservoir Development. http://www.abingdonreservoir.org.uk
  10. ^ [1] Resilience - Final Report. Group Against Reservoir Development. http://www.abingdonreservoir.org.uk
  11. ^ East Hanney solar farm

51°38′04″N 1°21′15″W / 51.63444°N 1.35417°W / 51.63444; -1.35417

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