Hayeswater 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,...

 within the 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...

 of Cumbria

Cumbria

Cumbria , is a non-metropolitan county in North West England. The county and Cumbria County Council, its local authority, came into existence in 1974 after the passage of the Local Government Act 1972. Cumbria's largest settlement and county town is Carlisle. It consists of six districts, and in...

, England

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...

.

The lake is situated about a mile (1.6 km) SE of the hamlet of Hartsop

Hartsop

Hartsop is a small village in the English Lake District. It lies in the Patterdale valley, near Brothers Water, Hayeswater and Kirkstone Pass.It consists of 17th Century grey stone cottages, like so many of its neighbours. Hartsop retains its historic image, in that, in common with a number of...

 in the Patterdale

Patterdale

Patterdale is a small village and civil parish in the eastern part of the English Lake District in the Eden District of Cumbria, and the long valley in which they are found, also called the Ullswater Valley....

 Valley. It nestles between The Knott

The Knott

The Knott is a fell in the English Lake District, standing above Hayeswater in the Far Eastern Fells. It is an outlier of Rampsgill Head, being the high point of the ridge from there to Rest Dodd.-Topography:...

 to its west and Gray Crag

Gray Crag

-Topography:The fell reaches a height of 699 metres at the northern end of its summit ridge and this is the accepted highest point which gives the best views, although there is a spot height of 710 metres less than a kilometre to the south. Both tops have small cairns set on grass...

 to the east and it is at an altitude of almost 1,400 feet (425 m). The lake is natural but now used as a reservoir

Reservoir

A reservoir , artificial lake or dam is used to store water.Reservoirs may be created in river valleys by the construction of a dam or may be built by excavation in the ground or by conventional construction techniques such as brickwork or cast concrete.The term reservoir may also be used to...

 serving the Cumbrian town of Penrith

Penrith, Cumbria

Penrith was an urban district between 1894 and 1974, when it was merged into Eden District.The authority's area was coterminous with the civil parish of Penrith although when the council was abolished Penrith became an unparished area....

. It is fed from the south by Hayeswater Gill, which rises close to the route of the Roman High Street

High Street (Lake District)

High Street is a fell in the English Lake District. At 828 metres , its summit is the highest point in the far eastern part of the national park. The fell is named after the Roman road which ran over the summit.-History and Naming:...

 and continues to Cow Bridge where it joins the outlet stream from Brothers Water

Brothers Water

Brothers Water is in the Hartsop valley and is a small lake in the eastern region of the English Lake District, in the county of Cumbria. Once called Broad Water, it lies at the northern end of Kirkstone Pass, affording picturesque views on the descent towards Patterdale.Dorothy Wordsworth, having...

.