Wet Sleddale Reservoir is an artificial reservoir set amongst the Shap Fells 4 kilometres (2 mi) south of the village of Shap in Cumbria, England, and lies just within the boundary of the Lake District National Park. The triangular shaped reservoir, which can store 2,330,406,000 litres of water, was created by the construction of a dam across Sleddale Beck in order to supply Manchester with water. The dam is 21 metres (69 ft) high and 600 metres (2,000 ft) long.