Weir, Leithen Water, Mills, Innerleithen

18th century with mid and late 19th century additions and alterations. Submerged stone weir across the Leithen Water; timber-boarded slice to E of ashlar road bridge; large cast-iron opening mechanism and diverting sluice sited on W bank of Leithen Water with stone, concrete and log slipway; lade running S through Innerleithen with various sluices en route.

WEIR AND MACHINERY: straight submerged masonry weir across Leithen Water with angled wall to NE. To west river bank, cast-iron opening mechanism (with wheels, one with handle driving shank) comprising diagonal struts supporting arm with timber sluice on iron poles, mounted on masonry base with later concrete repairs and strengthening work; sluice gate leading to timber lined concrete diverting slip with overflow to W.

SLUICE, BRIDGE AND LADE: at right angles to weir, masonry lade entrance with squared sluice gates (coursed stone to outer elevations with bricks to inner) with low pyramidal caps; timber boarded sluice with iron opening mechanism. Small single segmental-span bridge (carrying the Leithen Water Road over lade) directly to rear of sluice gates: squared coursed rubble construction, U-plan to E elevation, flat wall to W elevation with overhanging segmental punch-holed stone coping. Natural sided lade (with some masonry retainers) turning 90 degrees and flowing S towards Innerleithen.

LOWER LADE AND TOWN SLUICES: in Innerleithen Burgh (see NOTES).