Loch Arklet Dam Water Channel

The Loch Arklet Dam Water Channel, built between 1910 and 1915 by J R Sutherland based on designs by James M Gale from before 1902, is located in Loch Lomond and Trossachs National Park. This 350-yard long dam features a crenellated parapet and curved buttresses, constructed from concrete and faced with coursed, bull-faced red Annan sandstone. At the northern end, there is an off-centre 9-bay spillway that leads into an exit channel basin with curved sides. The spillway is flanked by buttresses at regular intervals, which have shallow machicolated detailing along the string course. The dam's top walkway, which has a crenellated parapet on the reservoir side, is supported over the spillway by a series of masonry piers and features tubular cast-iron railings on both the land side and over the spillway. A crenellated curved wing wall at the northern end displays a large cast-bronze commemorative plaque.

The dam includes two octagonal valve towers with deeply crenellated tops and mutulled eaves courses, which house a cast-iron regulating mechanism for the compensation supply that flows through the dam. The walls of the exit channels are masonry-clad.

Additionally, there is a single-span, segmental-arched bridge located a short distance downstream from the exit channels. This bridge has pyramidal-capped piers at each end and standard GCWW railings along the parapet, constructed from bull-faced coursed red Annan sandstone with prominent voussoirs.