Crummock Water is a lake in the Lake District in North West England. It is 4 km long, 0.97 km wide, 43 m deep, and has an area of 2.5 square kilometres. The lake\'s primary inflow is Buttermere Dubs, itself the outflow of Buttermere, and its outflow is the River Cocker, which meets the River Derwent at Cockermouth before entering the Irish Sea at Workington.
