Loch Doon Dam, Galloway Hydro Electric Power Scheme

James Williamson with Sir Alexander Gibb consulting engineers; Merz and McLellan, electrical engineers; 1936. Long shallow curved-section concrete arch and gravity dam with elevated roadway to crest on arcade of shouldered arches over fixed spillway to right (N) and ensuite with stepped eaves course to left (S); octagonal fish ladder to upstream (E) face. Concrete parapet to roadway, with evenly spaced larger piers forming buttress to upstream (E) face. Control room to upstream face on corbelled brackets with single round headed window to centre. Octagonal fish ladder to centre with concrete outer shell and continuous spiral of sequential octagonal pools to interior. Large fixed spillway to downstream (W) face with curved concrete wave-walls.