Lymm Dam

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Lymm Dam is a dam and lake in Lymm, a village in Cheshire, England, in the green belt around Warrington. It was created in 1824 when a dam was built during the construction of what is now the A56 road, after locals objected to routing through the village centre. It may have supplied power to local industry and the surrounding area.

Warrington Borough Council began managing the dam and its park in the early 1980s. There were big erosion problems, so the Ranger Service upgraded the paths and took over park maintenance. Today it is a popular visitor attraction and has won several Green Flag Awards for improvements to its infrastructure and wildlife.

The lake is fed from the south by three streams—Bradley Brook, Mag Brook and Kaylane Brook—and its outlet runs under the A56, down a valley called the Dingle to the Lower Dam in Lymm village centre. The dam at the foot of the lake is Grade II listed, as is Crosfield Bridge at the head of the lake.