Laggan Dam
Laggan Dam | |
---|---|
Official name | Laggan Dam |
Location | Scotland |
Coordinates | 56°53′23″N 4°40′24″W / 56.88972°N 4.67333°W |
Opening date | 1934 |
Dam and spillways | |
Impounds | River Spean |
Height | 48 m (157 ft) |
Length | 700 ft (210 m) |
Laggan Dam is a dam located on the River Spean south west of Loch Laggan in the Scottish Highlands.
History
The structure was built as part of the
The dam was designated a Category B listed building in 1985. It was upgraded to Category A listing in 2011, following a review as part of Hydroelectric Power Thematic Survey 2010.[1][2]
Design
The dam is about 700 feet (210 metres) long,
The whole crest of the dam, except for a section in the middle that houses equipment, is a spillway broken into 29 bays by piers that support a roadway across the dam.[4] As well as the spillway, there are six pipes embedded into the centre of the dam, controlled automatically by system of air valves.[4] The foundations are built on granite, and the dam was built in seven sections, with copper strip and hot poured asphalt water stops in the joints.[4]
The dam contains a reservoir which has a capacity of 40,000,000 cubic metres (1.4 billion cubic feet).[4]
Water from the dam is conveyed to
References
- ^ a b Historic Environment Scotland. "Lochaber Hydroelectric Scheme and Aluminium Smelter, Loch Laggan Dam (Category A Listed Building) (LB6835)". Retrieved 27 March 2019.
- ^ "Record Details - Loch Laggan Hydro Electric Dam". Highland Historic Environment Record. Highland Council. Retrieved 30 August 2013.
- ^ International Commission on Large Dams (1936). "Transactions": 79.
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(help) - ^ a b c d e Wallis, R. P.; Morison, A . C.; Gunstensen, R. Remedial drainage to Laggan and Blackwater gravity dams (PDF) (Report).
- ^ "Laggan Dam". International Commission on Large Dams of the World Power Conference. 1964: 145.
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