Map with: Google Map, or OS Explorer Map from Streetmap.co.uk

Other Sites Within 500m

None.

 Go to the Main Scottish Cave and Mine Database Search Page

Loch Glashan Tunnel

Lochgair, Loch Fyne, Argyllshire.

NGR:NR 92088 91029
WGS84:56.06677, -5.34160
Length:1700 m
Vert. Range:Not recorded
Altitude:90 m
Geology:Dalradian Supergroup - metagabbro
Tags:Rising, Tunnel, ManMade
Registry:second

Tunnel, Hydro-electric scheme.

"The [Loch Glashan] dam is a relatively small mass gravity structure, completed in 1961 with a maximum height of 24 metres (79 ft), from which water reaches the turbine house through a tunnel and a pressure pipeline at the lower end. The tunnel ends on the hillside to the west of the turbine house, where there is surge shaft and valve house, and the pipeline runs on the surface, passing under the A816 road just before it reaches the power station." [Wiki]

Alternative Names: None recorded.

Notes: Given coordinates are for the Valve House outfall. Surge shaft at [NR 9204 9105], & a possible Intake/Sluice Tower at [NR 9139 9214].

Given length approx., based on distance from Dam sluice to surge shaft, then valve house. Distance from tower structure is c. 1300m.

Hydrographic Feeds: Loch Glashan

Links and Resources:

This entry was last updated: 2025-10-30 19:09:08

Errors or omissions in this information? Submit corrections/additions/comments for this entry to the registrars.

All database content Copyright 2026 Grampian Speleological Group.
Web Registry software by Matt Voysey.