as it is fed with compensation water from the dam, and is joined by Allt Bhlaraidh, flowing southwards from three lochs and a reservoir, all of which are dammed. The river finally turns towards the south-east as it approached Invermoriston, the main settlement on its course. The A82 road which runs along the bank of Loch Ness used to cross the river on a two-arched bridge, with another arch on the right bank of the river and a three-arched clapper bridge in the approach on the left bank. It is in line with Telford's road built for the Commission for Highland Roads and Bridges in 1808-1811, but is thought to date from the mid-18th century. A replacement bridge was built in 1933, slightly further downstream. It consists of a single concrete span with a small flood arch, and was designed by Mears and Carcus-Wilson. Below the newer bridge is a nine-sided gazebo, perched on a rocky outcrop overlooking the river. It dates from the early 19th century. Shortly afterwards, the river discharges into Loch Ness. Hydro-electric power The Garry-Moriston hydro-electric scheme was one of several constructed by the North of Scotland Hydro-Electric Board, a public body formed in 1943 to promote water power in the Highlands. They used profits from similar schemes in the southern Highlands to fund remote schemes such as this, in order to stimulate economic regeneration of the area. The catchment for the River Moriston, which includes Loch Loyne and Loch Cluanie, is . Loch Loyne is impounded by a dam, which is long and high. Most of the water released from the loch passes along a tunnel and into Loch Cluanie. A small amount of electricity is generated by an induction generator in the pipeline. The dam is a mass gravity dam, and construction was completed in 1956. The loch covers an area of , the surface level is above Ordnance datum (AOD), and it is relatively shallow. The Cluanie dam is also a mass gravity dam, long and high. Compensation water for the River Moriston flows through a small power station located at the base of the dam. Both the Loyne dam and the Cluanie dam were built using ground blast furnace slag, which replaced 70 percent of the cement which would otherwise have been used, reducing the amount of Portland cement used by . The project was the first time that this technique had