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Glen Meall Beag Tunnel [Outfall]

Gleann a' Mhill Bhig, W of Loch Sloy, Dumbartonshire.

NGR:NN 26000 13400
WGS84:56.28106, -4.81227
Length:1700 m
Vert. Range:Not recorded
Altitude:350 m
Geology:Garabal Hill - Glen Fyne Pluton / Beinn Bheula Schist Formation
Tags:Adit, Tunnel, ManMade
Registry:second

Tunnel, Hydro electric scheme.

"A pipeline runs to a dam on a tributary of the Eas Riachain and a second dam on the main Eas Riachain, where there is an intake. A tunnel runs to the north east to reach the Eas an Tuirc, where there is a dam and another on a tributary. The tunnel continues to the east to empty into the Allt a' Chnoic". [Wiki]

Passage is through bedrock, some of which is faulted granite [BGS]

Alternative Names: Gleann Meall Beag - Allt a' Chnoic Tunnel

Notes: High-level SEE overview map suggests that the outfall point is at approx. [NN 260 134], near to (or in) the W bank of the Allt a' Chnoic.

Given length & 6 fig. NGR are estimates.

Refered to as 'Gleann Meall Beag - Allt a' Chnoic Tunnel' by BGS.

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This entry was last updated: 2025-10-15 03:47:00

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