Weirs And Water Channel (Former Glasgow Corporation Water Works), Loch Arklet To Loch Katrine Aqueduct Outlet, Stronachlachar

Loch Lomond And Trossachs National Park Planning Authority

James M Gale and J R Sutherland, 1910-1915. Series of settling ponds and weirs leading to outlet channel falling into Loch Katrine. Coursed red sandstone masonry.

TUNNEL EXIT: round-arched tunnel opening with prominent voussoirs set in raised and slightly advanced central section of 3-bay screen wall with crenellated parapet.

SETTLING PONDS: 3 rectangular pools running parallel to screen wall, divided by buttressed barrier walls with sluice openings below water level.

WEIRS: upper pool canted out above 5-sided, steep, 10-step weir. Timber and iron foot bridge crossing pool before weir with steps down to lower section containing sluice valve. Regularly-placed pillars supporting sluice mechanism at head of weir. Quadrant side walls splayed out to accommodate weir. Lower weir of 5 more deeply-spaced steps immediately below.

EXIT CHANNEL: stepped side walls with ashlar copes; boulder base.

RAILINGS AND GATES: standard GCWW cast-iron railings with rose motifs to heads of uprights surrounding settling ponds and upper weir pool. Cast-iron pedestrian gates to each side of exit channel at road bridge.