Lakes around Penllergaer are primarily found within the Penllergare Valley Woods, a restored Victorian estate featuring the Upper Lake and Lower Lake. These bodies of water, along with the surrounding woodland, were part of a 19th-century design by John Dillwyn Llewelyn. The area combines historical significance with natural beauty, providing a habitat for diverse wildlife. Visitors can explore peaceful woodland walks and enjoy tranquil scenery.
Last updated: April 30, 2026
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Lovely cycle path. Nice pub on route just off of cycle path with good food but a little expensive. Route has nice views
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Nice gravel track down to the reservoir with lovely views. Track down can get muddy but good fun. Do-able on a gravel bike
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Penllergare’s iconic waterfall is a manmade feature constructed on the River Llan to provide an ornamental lake.
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Easy walking along the Eastern and Southern edges of the reservoir, courtesy of the Gower Way (a 35-mile path linking Penller Castell to Rhossili if you fancy stretching your legs a little further). Fantastic views.
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Set amongst the stunning mountain scenery of the Mawr, the Lower Lliw reservoir is surrounded by a variety of habitats including bracken, scrub, grass and woodland, supporting a variety of wildlife. If you're into birding, keep an eye out for Peregrine, Kestrel, Raven, Wheatear, Meadow Pipit, Skylark, Whinchat, Red Kite and Curlew - which have all been spotted here. There is an accessible path to the South of Lower Lliw Reservoir that will take you all the way to the Upper Reservoir. The circular path closer to the shore-line features steep steps in places.
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Great place to canoe or SUP. Organised tours can be arranged or you can self-launch, with permission.
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Cyclists need to be aware of vehicles and walkers using the road between the Lower and Upper reservoir.
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The lower reservoir is not suitable to go around. There are steep steps at one end.
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Penllergare Valley Woods offers over seven miles of peaceful woodland walks, connecting the Upper and Lower Lakes. You can find easy routes like the 'Penllergare Valley Woods to Lake Side loop' or the 'Penllergare Waterfall – Penllergare Lower Lake loop'. For more options, explore the hiking guide for Penllergaer.
Yes, Penllergare Valley Woods is easily accessible, located just off Junction 47 of the M4. Within the woods, there are various paths suitable for different abilities. For instance, the Lower Lliw Reservoir has an accessible path to its south that leads to the Upper Reservoir, though the shoreline path closer to the water may feature steep steps in places.
Absolutely. Penllergare Valley Woods, with its Upper and Lower Lakes, was historically used by the Llewelyn family for picnics and boating. Today, it remains a great family destination with tranquil walks, a significant waterfall, and a community-run cafe on-site. The WWT Llanelli Wetland Centre is also very family-friendly, offering extensive birdwatching opportunities.
Penllergare Valley Woods is generally dog-friendly, offering plenty of woodland and lakeside paths for walks. It's always best to check local signage for specific rules regarding dogs, especially around wildlife conservation areas, to ensure a pleasant visit for everyone.
The lakes and surrounding woodlands are a haven for wildlife. You might spot kingfishers, otters, and water voles. The European Eel inhabits the waters, and Daubenton bats can be seen fishing on the Upper Lake in the evenings. The WWT Llanelli Wetland Centre is particularly renowned for its diverse birdlife, from native herons to Caribbean flamingoes.
The Upper and Lower Lakes are integral to the Victorian picturesque landscape designed by John Dillwyn Llewelyn in the 19th century. Llewelyn, a renowned horticulturist and pioneering photographer, used these lakes for family activities. The iconic Penllergare Waterfall, which created the Upper Lake, is a masterpiece of 19th-century engineering.
Yes, within Penllergare Valley Woods, there is a community-run cafe on-site, providing refreshments and a place to relax. Additionally, the car park at Upper Lliw Reservoir also has a cafe, though it only takes cash.
Beyond hiking, you can enjoy mountain biking on trails like 'View of the Loughor Estuary' or 'Clyne Valley Trail' (see MTB Trails around Penllergaer). Road cycling routes are also popular, such as the 'Three Cliffs Bay loop' (find more in the Road Cycling Routes around Penllergaer guide). The Swiss Valley Reservoir is known for canoeing and stand-up paddleboarding.
Penllergare Valley Woods is beautiful throughout the year. In spring, you can see wild daffodils and bluebells, while rhododendrons are best seen in late May and early June. The diverse scenery makes it a rewarding visit in any season.
On-site parking is available at Penllergare Valley Woods, making it convenient for visitors arriving by car. The woods are easily accessible just off Junction 47 of the M4.
While some lakes like Swiss Valley Reservoir offer organised water sports like canoeing and stand-up paddleboarding, wild swimming is generally not permitted or advised in most reservoirs and natural lakes in the area due to safety concerns and regulations. Always check local signage and guidelines before entering the water.
Visitors appreciate the tranquil atmosphere and the historical significance of the Penllergare Valley Woods. The easy walking along the Eastern and Southern edges of the Upper Lliw Reservoir offers fantastic views, and the Penllergare Waterfall is a highly recommended walking destination. The komoot community has shared 19 photos and given 23 upvotes, highlighting the area's appeal.
Yes, the region features several other significant lakes. The Upper Lliw Reservoir and Lower Lliw Reservoir are set amidst stunning mountain scenery, offering varied habitats and birdwatching opportunities. The Swiss Valley Reservoir is popular for its cycle path and water sports.


Still not found your perfect lake around Penllergaer? Check out the guides of these regions to see even more beautiful places.