been used in Britain. Loch Cluanie is much deeper than Loch Loyne. It covers an area of and its surface level is AOD, which is higher than it was prior to construction of the dam. From Loch Cluanie, water is fed to a power station at Ceannacroc through a tunnel and pressure shaft. The power station was built underground and was one of the first underground stations to be constructed in the country, when it was completed in 1956. This arrangement provides a head of and the station can generate 20 MW. There is also a smaller generator in the station, which can discharge compensation water to the river when the full capacity of the station is not required. In addition to the main supply from Loch Cluanie, water from the upper reaches of the River Doe and its tributaries is captured and fed into a branch tunnel, where it can either be used by the turbine directly, or can be fed into Loch Cluanie for later use. A dam was built across the River Moriston some downstream of the Loch Cluanie dam in 1957, to form Dundreggan Reservoir. It is a mass gravity dam long by high, and creates a headpond for Glenmoriston power station which is below the ground, and is fed by a vertical shaft. Once the water has passed through the two 18 MW turbines, it flows into Loch Ness through a tailrace tunnel which is in diameter and around long. The level of the reservoir is controlled by automatic sector gates. Compensation water for the river is discharged through another small power station, built into the dam. When the dam was constructed, a Borland type fish pass was included, to allow fish to move upstream beyond the structure. A third power station on the River Moriston system was constructed in 1962. The Livishie station generates 15 MW, and a head of is provided by the Blairaidh Reservoir. This acts as a headpool, but its water is supplemented by supplies from Loch a Chrathaich, Loch Laith and Loch ma Stac, all of which have had their capacity increased by the construction of small dams. Transfer from these lochs is controlled remotely from Glenmoriston power station. In addition, a system of aqueducts collects water from streams flowing into the Moriston downstream of Dundreggan Reservoir, and feeds some of their flow into Blairaidh Reservoir. Power generated by the