Loch Sloy Dam

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Alternative Names Loch Sloy Hydro-Electric Scheme; Inveruglas Water
Site Type DAM
Canmore ID 92619
Site Number NN21SE 2.01
NGR NN 28871 11074
Council ARGYLL AND BUTE
Parish ARROCHAR
Former Region STRATHCLYDE
Former District DUMBARTON
Former County DUNBARTONSHIRE
Datum OSGB36 - NGR

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Archaeological Notes

NN21SE 2.01 28871 11074

Dam [NAT]
OS 1:10,000 map, 1976.

Loch Sloy (1950). Buttress dam [NN21SE 2.01] on Loch Sloy (Balfour Beatty & Co), with main tunnel and surge shaft (Edmund Nuttall Sons & Co) leading to pipeline [NN30NW 7.01] (Sir William Arrol & Co) feeding a power station [NN30NW 7.00] (Hugh Leggat Ltd) on Inveruglas Bay, on Loch Lomond. Average annual output 120 mW.
J Miller 2002.

3 May 2007
 AERIAL PHOTOGRAPHY

Project 2007 RCAHMS Aerial Survey

Further details

2010
 FIELD VISIT

Project The Hydro-Electric Digitisation Project

Notes Loch Sloy Dam forms the storage reservoir for Sloy power station (see separate item). The dam is of buttress type with a fixed spillway to the centre and integrated tunnel intake gatehouse to the upstream side of the dam allowing water to enter the tunnel through to the power station. The dam is 56 meters high and 357 meters long. This large dam is of pioneering design, which was first proposed by prominent dam designer James Williamson in a lecture in Washington DC in 1936. The buttressed design represented a significant saving in materials over the construction of a traditional mass concrete gravity dam. This type of dam was increasingly commonly used in the later schemes developed by NoSHEB, under the influence of James Williamson who was the lead member of the NoSHEB technical panel. P L Payne, 1988, 5; E Wood, 2002, 38; J Miller, 2002.

Further details

 
Books and References

Miller, J (2002) The dam builders: power from the glens, Edinburgh
Page(s): 27-41, 254 maps 1 and 8, pls. 3-13 Held at RCAHMS J.5.14.MIL

North of Scotland Hydro-Electric Board (1950) Loch Sloy hydro-electric scheme: opened by Her Majesty the Queen 18th October 1950, [S.l.]
Page(s): passim. Held at RCAHMS D.11.43.SLO

Payne, P L (1988) The hydro: a study of the development of the major hydro-electric schemes undertaken by the North of Scotland Hydro-Electric Board, Aberdeen
Page(s): passim. esp. 51-2, 59-63, 81-97, 112, 115-16 pls. 3-5, figs. 8-13 Held at RCAHMS J.5.14.PAY

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