Threipmuir Reservoir
Threipmuir Reservoir is a reservoir in the City of Edinburgh Council area, Scotland, UK. It is situated to the south of Edinburgh in the Pentland Hills, two miles south of Balerno.
Threipmuir reservoir is located behind an earth dam, constructed to a design by Scottish civil engineer James Jardine. The dam was constructed between 1843 and 1848 to augment water supplies to Edinburgh, by the Edinburgh Water Company.
The reservoir spillway discharges at the eastern end, from where the discharge flows into Harlaw Reservoir.
Bavelaw Castle lies on its south side.