Gladhouse Reservoir

Gladhouse Reservoir was built in 1879 by James and Alexander Leslie to supply water to Edinburgh, Leith, Portobello, and Dalkeith.

The dam features squared and snecked pink sandstone with a slightly battered retaining wall topped with semi-circular coping. To the south of the dam, there is a platform with an ironwork whipple gangway leading to an ashlar upstand shaft. A curved weir is located to the east of the dam, crossed by a plate girder bridge, while a pier and slipway are situated to the west. There is also a sharply curved weir at the foot of the embankment to the north.

Adjacent to the weir at the foot of the embankment is the measuring house, which is a single-storey structure with stugged walls and droved dressings. It has raised margins and strip quoins. The east elevation has three bays, with a central doorway featuring a simple pediment and a boarded timber door, flanked by windows. The north elevation has a central opening with a boarded timber shutter and a louvred bull's eye opening in the gable head. The west elevation has three bays with regular fenestration, while the south elevation features a central window and a louvred bull's eye opening in the gable head. The building has three-pane lying pane windows, a grey slate roof with a lead ridge, coped stone skew, and cast iron rainwater goods. The interior was not seen in 1998.

The Tweedaleburn Aqueduct emerges from a tall semi-circular arched opening to the southwest of the reservoir. It is constructed of coursed bull-faced pink sandstone with a stugged rusticated arch ring and keystone, and features stugged bull-faced coping. The aqueduct has a coursed, steep-sided channel that enters the reservoir on the west side and passes under a flat segmental arched bull-faced bridge with stugged rusticated coping and arch ring, and slightly splayed wing walls.

Additionally, there is a small round-arched bridge over Crosslee Burn, made of bull-faced sandstone on the outer walls, squared and snecked below the parapet, and stugged on the inner walls. It has semi-circular stugged coping and splayed wing walls.