The reservoir flooded part of the valley of the River Rheidol and its headwaters and is named after the Nant-y-moch stream (in English = the pigs stream), which formerly flowed into the River Rheidol at this spot.

It's a great dark-sky spot if you're into astronomy / astro-photography.

Geraint

February 28, 2025

Nant y Moch Reservoir is a significant water reservoir located in the Cambrian Mountains of Wales, specifically in the county of Ceredigion. It was constructed in the late 20th century and is primarily used for water supply. The reservoir is situated near the village of Llanidloes and is part of the larger infrastructure managed by Welsh Water.

The area surrounding Nant y Moch Reservoir is known for its natural beauty, featuring rolling hills, moorland, and diverse wildlife. It is a popular destination for outdoor activities such as walking, birdwatching, and fishing. The reservoir itself is also used for recreational purposes, and there are walking trails around its perimeter that offer stunning views of the water and the surrounding landscape.

In terms of ecology, the reservoir and its surroundings support various plant and animal species, making it an important area for conservation as well as recreation. The combination of natural beauty and recreational opportunities makes Nant y Moch a valued spot in the Welsh countryside.

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Elevation 320 m

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Saturday 22 November

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Location: Blaenrheidol, Ceredigion, South Wales, Wales, United Kingdom

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