Greenburn Reservoir

Type; Natural, enlarged by damming
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Location; Tilberthwaite Fells
Accessibility; Access Land
Grid Ref; NY 285 021
Elevation; 292 m (958 feet)
Size; 215 x 109 m (700 x 360 feet)
Area; 1.6 hectares (3.9 acres)
Depth; 2m (6½ feet)
Meaning of name;
Alternative name(s); Greenburn Beck Tarn (prior to 18th century)


Greenburn Reservoir was constructed in the 18th century, enlarging Greenburn Beck Tarn, to provide a water supply for the copper mines on the southern side of the valley. The dam has now been breached reducing the size of the lake, which is now a mixture of marshland and pools. The tarn is overlooked by the high crags and fells that surround the valley, Wetherlam and the Tilberthwaite Fells to the south, Hell Gill Pike to the south-west and Rough Crags to the north.

It may be accessed either by crossing Rough Crags from the Three Shires Stone on Wrynose Pass, or by footpath from Slater Bridge in Little Langdale.