Elter Water is a small lake in the Lake District in North West England, half a mile southeast of the village of the same name. It has a length of 0.62 mi, maximum width of approximately 0.24 mi, a maximum depth of 7 m, and an area of 0.16 km2. Its outflow is the River Brathay, which flows south to join Windermere near Ambleside. Windermere is itself drained by the River Leven, which flows into Morecambe Bay. The lake is in the unitary authority of Westmorland and Furness and the ceremonial county of Cumbria. Elter Water forms part of the boundary between the historic counties of Lancashire and Westmorland, and is the northernmost point of the former.

Etymology

The name Elterwater means either

Ecology

The lake is a Site of Special Scientific Interest, but there have been problems with water quality, in particular eutrophication. Navigation is prohibited on the lake.

Cultural references

Thomas Frederick Worrall painted a watercolour of the lake with Langdale Pikes in the background. This painting is hanging in the Bishop's House, Keswick.