Best lakes around Pentrefoelas, a small village located near the borders of Snowdonia, Conwy, and Denbighshire, offer diverse natural landscapes. The area features a mix of forests, moorland, and significant water bodies. These lakes provide opportunities for various outdoor activities and serve as important water sources. The region's geography makes it a central point for exploring both natural and man-made lakes.
Last updated: June 26, 2026
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Though it was not a tough or technical ride, it did take me into territory I had never visited before and was a lovely antidote to the 'fleshpots' of Gwydir Forest or Coed-y-Brenin. Some lovely gentle singletrack, beautiful views and I didn't see another rider for the whole trip - although tbh I did set off at 08.30 on a Wednesday!!
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This idyllic mountain lake is hidden amongst the pine and deciduous forests of the Gwydyr Forest and lies above Betws-y-Coed. The lake is used as a water reservoir. In the past the lake was actually made up of two smaller lakes, called Llyn Rhisgog and Llyn Enoc.
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Llyn Brenig is a reservoir located on Denbigh Moors in North Wales. The artificial lake, which was constructed between 1973 and 1976, was created by building an embankment dam across the Afon Brenig valley. It lies at 1,200 ft (370 m) above sea level on the border between the counties of Conwy and Denbighshire. It is used to manage the flow in the River Dee as part of the River Dee regulation system.
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A few lake facing benches here. perfect to have a bite to eat and coffee before head off.
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The grand, ornate stone dam of Alwen Reservoir couldn't be more of a contrast to the neighbouring Llyn Brenig Dam. It's well worth taking a minute or two to take in this magnificent feat of engineering, that was completed in 1920. The reservoir here was built to provide drinking water for Liverpool and the Wirral.
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Among the most popular lakes are Llyn Elsi, an idyllic mountain lake in Gwydyr Forest known for its expansive views, and Llyn Brenig, a large reservoir offering watersports, extensive trails, and fishing. Visitors also appreciate the historical significance of the Llyn Syfydrin Waterworks Commemoration Monument.
Yes, several lakes cater to families. Llyn Brenig offers extensive cycling and walking trails suitable for all ages, with bike hire available. It also has a visitor centre with a café and gift shop. Alwen Reservoir also features a 10km circular trail ideal for walking and cycling with family.
Absolutely. Many lakes offer excellent hiking and walking opportunities. Llyn Elsi has various paths, including a rewarding walk from Betws-y-Coed. Llyn Brenig boasts 2,500 acres of trails, and Alwen Reservoir features a 10km circular trail. For more detailed routes, you can explore hiking guides around Pentrefoelas on komoot.
Llyn Brenig is a significant destination for watersports, including paddleboarding, kayaking, and open-water swimming during the summer months.
Yes, the Llyn Syfydrin Waterworks Commemoration Monument is a notable historical site commemorating the construction of the dam and the lake's use as a water supply. Additionally, Alwen Reservoir features a striking dam with an Italian-style valve tower, an impressive feat of engineering completed in 1920.
Llyn Elsi provides expansive views of the Glyderau and Carneddau mountain ranges. Alwen Reservoir offers stunning views across the water, with distant glimpses of the Snowdonia mountains. Llyn Brenig also provides glorious views from its shores.
Yes, cycling is a popular activity. Llyn Brenig has extensive cycling trails, and bike hire is available. Alwen Reservoir also features a 10km circular trail suitable for cycling. You can find various cycling routes, including gravel biking options, in the komoot guides for the area.
Fishing is permitted at several lakes. Llyn Brenig is known for world-class trout and pike fishing. Llyn Elsi is stocked with various types of trout, and day tickets are available from the local angling club. Fishing is also allowed at Alwen Reservoir.
Llyn Brenig has a visitor centre that includes a café, gift shop, and an osprey exhibition. A link route connects Alwen Reservoir to the Llyn Brenig visitor centre, offering additional facilities. The Giler Arms, located directly in Pentrefoelas, features a private lake and offers hotel amenities including a restaurant.
Many of the trails and outdoor areas around the lakes are dog-friendly. However, it's always advisable to keep dogs on a lead, especially around wildlife and livestock, and to check specific site regulations before your visit.
The lakes are beautiful year-round. Summer months are ideal for watersports and open-water swimming at Llyn Brenig. Spring and autumn offer pleasant temperatures for walking and cycling, with vibrant natural colours. Winter can provide a rugged, serene experience, though some facilities might have reduced hours.
Yes, there are easy walking options. The 10km circular trail around Alwen Reservoir is generally considered accessible for walking. Llyn Brenig also offers trails catering to various abilities. For specific easy routes, you can check the komoot hiking guides for Pentrefoelas, which often detail difficulty levels.
Komoot offers several guides for outdoor activities in the area. You can find detailed routes for hiking at Hiking around Pentrefoelas, mountain biking at MTB Trails around Pentrefoelas, and gravel biking at Gravel biking around Pentrefoelas. These guides include various routes with distances and difficulty ratings.


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