Sulby Reservoir
| Sulby Reservoir | |
|---|---|
 Dusk at Sulby Reservoir, 2009 | |
| Location | Sulby Glen |
| Coordinates | 54°16′17″N 4°30′00″W / 54.27139°N 4.50000°WCoordinates: 54°16′17″N 4°30′00″W / 54.27139°N 4.50000°W |
| Type | Reservoir |
| Primary inflows | Sulby River |
| Primary outflows | Sulby River |
| Catchment area | 16.2 square kilometres (4,000 acres) |
| Basin countries | Isle of Man |
| Surface area | 62 hectares (150 acres) |
| Average depth | 25 metres |
| Water volume | 4,832,000 m3 (3,917 acre·ft) |
Sulby Reservoir is the largest reservoir or lake in the Isle of Man.
Dam
The reservoir's dam was completed in 1982. It is a rock fill embankment dam, 73 metres (240 ft) high.
Geography
It is located in Sulby Glen near the source of the Sulby River, the longest river on the island. Sulby Reservoir is also about 1 mile (1.6 km) west of the summit of Snaefell, the island's highest peak. It is operated by the Isle of Man Water Authority.[1]
Use
The reservoir supplies St Johns and Peel, Kirk Michael, Ballaugh, Andreas, Bride, Ramsey and Laxey. Water can also be pumped to the West Baldwin Reservoir which supplies Douglas and the south of the island.
The reservoir also powers a downstream hydro-electric power station a mile (1.6 kilometres) downstream.
An energy recovery system was installed at Sulby Water Treatment Works, in 2013, to generate hydroelectric power from incoming water.