Llyn Cefni Reservoir and Dam – Afon Cefni River loop from Anglesey
Llyn Cefni Reservoir and Dam – Afon Cefni River loop from Anglesey
4.6
(17)
195
hikers
Llyn Cefni Reservoir and Dam – Afon Cefni River loop from Anglesey
01:34
6.04km
30m
Hiking
Easy hike. Great for any fitness level. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is right next to a parking lot.
Last updated: May 10, 2026
Waypoints
Start point
Parking
Get Directions
1.30 km
Llyn Cefni Dam
Highlight • Monument
During World War II, a water scheme was devised for the town of Llangefni in central Anglesey. It involved water from a local source being pumped to two settling tanks in the Dingle part of the town. From here the water was pumped across the river to a reservoir and water tower, on the site of the present Pennant Estate. These arrangements became redundant with the building of the Cefni Reservoir, which was completed in 1951, but the settling tanks and pumping station survive in Llangefni to this day. The new scheme was designed to supply most of the water needs for the people of Anglesey for the foreseeable future
Tip by
1.37 km
Llyn Cefni Reservoir and Dam
Highlight • Structure
Tip by
1.42 km
Cefni Reservoir Dam
Highlight • Structure
Tip by
2.54 km
Llyn Cefni
Highlight • Lake
3.00 km
Afon Cefni River
Highlight • Other
3.01 km
River Entering Llyn Llangefni
Highlight • Lake
5.75 km
Cefni Forest
Highlight • Forest
Tip by
6.04 km
End point
Parking
Way Types & Surfaces
Way Types
3.35 km
2.20 km
480 m
Surfaces
4.02 km
1.41 km
292 m
256 m
< 100 m
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Elevation
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Weather
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Thursday 25 June
27°C
16°C
0 %
Additional weather tips
Max wind speed: 40.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
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