Stwlan Dam

Tanygrisiau, United Kingdom

The Stwlan Dam is a col with a length of 2.8 kilometer. This is a category 2 col. It is located in Tanygrisiau, Wales, United Kingdom. The average grade of this col is 9.3% with a maximum of 11.9%. The Stwlan Dam ascents from 246 meter at the start, to 505 meter at the top, with a total of 259 ascending meters.


Stwlan Dam Profile


Distance 2.8 km
Elevation gain 259 m
Average grade 9.3 %
Maximum grade 11.9 %
Climb category 2
Minimum elevation 246 m
Maximum elevation 505 m

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The Stwlan Dam climb is on a road closed to cars. The road is used by the odd car from the electricity company but that is the only traffic you will meet. This road leads up to the dam way up in the hills above the village of Tanygrisiau. The dam feeds water from the lake at the top down to the lake by the village which runs a power station.