Thirlmere
| Dam Name | Thirlmere |
| River | Derwent |
| Near City | Keswick |
| Administration City | England |
| Country | United Kingdom |
| Year | 1894 |
| Dam Height | 20 |
| Dam Length | 224 |
| Area(Sqkm) | 2.9 |
| Area(Polygonal) | 2.9 |
| Capital Expenditure | 40.7 |
| Depth(M) | 14 |
| Avg Displacement Of Water | 1175 |
| Catchment Area In Sqkm | 31 |
| Main Usage | Water supply |
| Status | 2: Good |
| Longitude | -3.070417 |
| Latitude | 54.560417 |
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