Loch Treig

A reservoir situated between the 'Road to the Isles' and Rannoch Moor, Loch Treig extends just over 5 miles (8 km) south southwest from Fersit in Glen Spean. In the late 1920s, the original loch was deepened behind the 115-m (377-foot) long and 11.9-m (39-foot) high Treig Dam, located at its northern end, to form a 209 million cubic metre (45.9 billion gallon) reservoir for the Lochaber Hydro-Electric Power Scheme. The loch is fed by the Abhainn Rath and other streams, together with a tunnel from the Laggan Reservoir 2½ miles (4 km) to the northeast, and drains northwards via the River Treig into the River Spean. Another tunnel (15 miles (24 km) in length) diverts water to the power-house of the Lochaber Aluminium Smelter at Fort William. The West Highland Railway Line passes on it east side also en route to Fort William. The hills to the east and west were planted with exotic trees and rhododendrons in the early 20th century by Sir John Stirling Maxwell, owner of the Corrour Estate.

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