Fish Ladder And Railings (Former Glasgow Corporation Water Works), Weir, Achray Dam Including Sluices, Loch Katrine

The Fish Ladder and Railings at the former Glasgow Corporation Water Works, located at Achray Dam on Loch Katrine, was designed by James M Gale in 1902, possibly incorporating elements from around 1857, and was extended in 1919. This low-lying masonry dam features 13 sluice openings situated between narrow projecting piers, an over-spill weir with an iron footbridge above, and a fish ladder. The structure is built from bull-faced sandstone masonry with polished ashlar dressings, and there are some concrete slabs used for the outflow steps at the rear.

The dam includes a 13-bay sluice section on the right, with four bays on the left that have segmental-arched sluice openings; the other openings are located below the water line. Above the sluices, there is a paved walkway with standard Glasgow Corporation Water Works railings and sluice operating machinery. The fish ladder, which has 13 basins, is located adjacent to a battered wall on the outflow side, with each basin featuring a segmental-arched opening that corresponds to a sluice. Beyond the fish ladder, there is a stepped concrete outflow. To the left, the ashlar-coped weir section is topped with an iron footbridge, and there is a sloped, paved outflow section with stepped masonry wing-walls.