| Langsett Reservoir | |
|---|---|
 Seen from Hingcliff Common to the west | |
  Langsett Reservoir | |
| Location | South Yorkshire |
| Coordinates | 53°29′47″N 1°41′10″W / 53.49639°N 1.68611°W |
| Type | reservoir |
| Primary inflows | Little Don River |
| Catchment area | 5,203 acres (2,106 ha) |
| Basin countries | United Kingdom |
| Surface area | 51 ha (130 acres) |
| Max. depth | 97 ft (30 m) |
| Water volume | 1,408,000,000 imp gal (6.40×109 L; 1.691×109 US gal) |
Langsett Reservoir is in Yorkshire, England, near the villages of Langsett and Upper Midhope, on the edge of the Peak District National Park. The reservoir was constructed between 1898 and 1904, and is now managed by Yorkshire Water. Fed by the Little Don or Porter River, it is around a mile long, and supplies water for Sheffield and Barnsley via the Langsett Treatment Works.