Deepest lakes & reservoirs in United Kingdom by maximum depth (ft)
The estimated greatest depth of the water in a lake can be measured at the lake’s normal elevation. If the water volume and surface area of a lake are known, an estimate of the lake’s average depth can be calculated:Water volume ÷ Surface Area = Average Depth
Example: 1,000,000 acre-feet ÷ 20,000 acres = 50 feet average depth.
You can find many of the the world’s deepest lakes on LakeLubbers. If you sort the list, you will find the (maximum depth of) the shallowest lakes in our database. Note: For some lakes, lake depth data is unknown, so this table may display fewer lakes than the total 43 articles we have published for United Kingdom lakes.
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Below are lakes within United Kingdom > Compared by maximum depth in feet. This list does not represent all lakes in United Kingdom, only the 43 United Kingdom lake articles we have published on the LakeLubbers website.
Lake name  |
Max depth in feet |
Lake description |
|---|---|---|
| Lake Vyrnwy (Mid Wales Region, UK, United Kingdom, Wales, United Kingdom) |
84 ft | Also known as Llyn Efyrnwy, Vyrnwy Reservoir Lake Vyrnwy (Llyn Efyrnwy in Welsh) is a beautiful man-made reservoir constructed in 1888 to provide the City of Liverpool with a reliable and plentif … |
| Lough Neagh (Antrim Region, Northern Ireland, Northern Ireland Region, United Kingdom, United Kingdom) |
80 ft | Also known as Lake Neagh, The Lough Nestled in the heart of Northern Ireland, Lough (Lake) Neagh is the largest freshwater lake in the British Isles. Covering over 96,800 acres with beau … |
| Buttermere (England, England's Northwest Region, United Kingdom) |
75 ft | Also known as The Lake District Located among the western lakes in England’s Lake District, ruggedly beautiful Buttermere is one of a chain of three spectacular lakes. Running from n … |
| Derwentwater (England, England's Northwest Region, United Kingdom) |
72 ft | Also known as Derwent Water, Derwentwater Lake, The Lake District Cumbria, in northwest England, is home to Lake District National Park, established in 1951. All of the land in England that exceeds an elevation of 3, … |
| Lough MacNean (Fermanagh Region, Northern Ireland, Ireland, North West Region, Ireland, Northern Ireland Region, United Kingdom, United Kingdom) |
70 ft | Also known as Upper Lough MacNean, Lower Lough MacNean Lough MacNean, a freshwater lake (lough) surrounded by picturesque scenery, is often referred to by Upper Lough MacNean and Lower Lough MacNean. This … |
| Bassenthwaite Lake (England, England's Northwest Region, United Kingdom) |
62 ft | Also known as Bass Lake, Bassenwater, Broadwater, The Lake District Bassenthwaite Lake is a scenic peaceful lake located in England’s Lake District. In this land of many lakes, Bassenthwaite Lake is the only body of wa … |
| Brotherswater (England, England's Northwest Region, United Kingdom) |
49 ft | Also known as Brothers Water, Broad Water, The Lake District Surrounded by green fields, grazing sheep and scenic hillsides, Brotherswater is found in northwest England’s Lake District National Park. At 47 acres … |
| Lough Foyle (Ireland, Londonderry Region, Northern Ireland, North West Region, Ireland, Northern Ireland Region, United Kingdom, United Kingdom) |
49 ft | Also known as Loch Feabhail Standing on the stoop of his holiday cottage looking out over the water of Lough Foyle, he was struck by how closely the 44,000 acre estuary matched h … |
| Loughrigg Tarn (England, England's Northwest Region, United Kingdom) |
34 ft | Also known as Diana's Looking Glass Loughrigg Tarn is a charming country lake set in northwest England’s Lake District National Park. The calm water of this peaceful lake mirrors wooded … |
| Crag Lough (England, North East England Region, United Kingdom) |
7 ft | Also known as Roman Wall Loughs Set within the southern end of England’s Northumberland National Park, Crag Lough is one of three lakes known as the Roman Wall Loughs. The cliffs tha … |
| Greenlee Lough (England, North East England Region, United Kingdom) |
6 ft | Also known as Roman Wall Loughs Located in Northumberland National Park, Greenlee Lough is Northumberland County’s largest natural lake. Considered one of the Roman Wall Loughs, Gree … |