Yew Tree Tarn is a small lake

Lake

A lake is a body of relatively still fresh or salt water of considerable size, localized in a basin, that is surrounded by land. Lakes are inland and not part of the ocean and therefore are distinct from lagoons, and are larger and deeper than ponds. Lakes can be contrasted with rivers or streams,...

 in the English

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

 Lake District

Lake District

The Lake District, also commonly known as The Lakes or Lakeland, is a mountainous region in North West England. A popular holiday destination, it is famous not only for its lakes and its mountains but also for its associations with the early 19th century poetry and writings of William Wordsworth...

 situated in between the towns of Ambleside

Ambleside

Ambleside is a town in Cumbria, in North West England.Historically within the county of Westmorland, it is situated at the head of Windermere, England's largest lake...

 and Coniston

Coniston, Cumbria

Coniston is a village and civil parish in the Furness region of Cumbria, England. It is located in the southern part of the Lake District National Park, between Coniston Water, the third longest lake in the Lake District, and Coniston Old Man; about north east of Barrow-in-Furness.-Geography and...

. The tarn was formed when the local landowner dammed the Yewdale Beck in the 1930s.

In July 2010 volunteers from the South Lakes Rivers Trust and the Coniston and Crake Partnership removed most of the fish from the tarn in order to avoid kill off from low water levels due to a local drought. The fish were moved to the nearby beck.