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Mourne Aonb

Top 11 Lakes in Mourne Aonb

Best lakes in Mourne Aonb are found within a region characterized by rugged terrain, granite peaks, and a mix of natural and built heritage. This Area of Outstanding Natural Beauty in Northern Ireland features a collection of lakes and reservoirs that serve as water sources and offer diverse landscapes. The area provides opportunities for exploring mountain scenery and significant engineering works.

Best lakes in Mourne Aonb

  • The most popular lakes is Blue Lough, a lake embedded in a wide…

Last updated: May 8, 2026

Slieve Binnian summit

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Has to be one of the best summits in the Mournes.
Fantastic views down to silent valley reservoir and south towards Carlingford.
As with any hill walking - be prepared for a change in weather and have good footwear. Enjoy

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Silent Valley Reservoir

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Silent Valley Reservoir in the heart of the Mourne Mountains is one of the most beautiful places in Northern Ireland.

Situated in the Mourne Mountains AONB near Kilkeel, Silent Valley …

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Slieve Loughshannagh summit

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Slieve Loughshannagh is one of the quieter summits in the Mourne Mountains, but it rewards hikers with wide, open views over Silent Valley, Slieve Binnian, and the western Mournes. The …

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Blue Lough

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Embedded in a wide trough valley, the Blue Lough is right at your feet. A place to just pause and enjoy the impressive nature.

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View of Castlewellan Castle

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Lovely looking castle surrounded by a lake and lots of trails for walking and cycling. Unfortunately, the castle is not open to the public and swimming is not allowed in the lake (fishing and boats are fine).

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Damiano 🇮🇹
August 18, 2025, Slieve Loughshannagh Summit

Slieve Loughshannagh is one of the quieter summits in the Mourne Mountains, but it rewards hikers with wide, open views over Silent Valley, Slieve Binnian, and the western Mournes. The climb isn’t too demanding, and the summit has a peaceful, windswept feel, making it a lovely spot to pause and take in the rugged beauty of the landscape.

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Silent Valley Reservoir, nestled in the Mourne Mountains, is a peaceful retreat surrounded by sweeping granite peaks and heathered slopes. Built in the early 20th century to supply water to Belfast and much of County Down, the reservoir combines striking engineering with natural beauty. Visitors can stroll along well-kept paths, admire the Victorian-style dam and impressive Mourne Wall, or simply enjoy the quiet atmosphere by the lakeshore.

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The well-maintained trails take you through impressive scenery, surrounded by the striking peaks of the Mournes. The view of the Mourne Wall, which stretches for 35 kilometers and connects 15 peaks, is particularly impressive. However, some sections can become slippery in wet weather, so caution is advised. A highlight is a visit to Ben Crom Reservoir, which can be reached via an extension of the route. Note that there is a fee to enter the park.

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A very beautiful castle in the forest

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Beautiful view of the castle

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At 617m high, Slieve Loughshannagh isn't the highest in the Mournes but it does offer fantastic views down over the lough and deeper into the Mournes.

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Beautiful area with a good kids play park

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Grace Mulligan
October 20, 2023, Blue Lough

The Blue Lough is a picturesque mountain lake embedded in a wide trough valley in the southern Mournes. It's the perfect place, to pause, catch your breath, and enjoy the impressive nature.

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Frequently Asked Questions

What are some of the most popular lakes to visit in the Mourne AONB?

Visitors frequently enjoy the serene beauty of Silent Valley Reservoir, known for its impressive engineering and peaceful walks. Another favorite is Blue Lough, offering a tranquil spot to appreciate the natural surroundings. For a unique experience, many head to Sandy beach at Lough Shanna, a small sandy beach nestled high in the mountains.

Are there family-friendly lakes or activities suitable for children in the Mourne AONB?

Yes, several lakes offer family-friendly options. Silent Valley Reservoir is an excellent choice, featuring woodland walks, a children's play area, and an exhibition centre. The Silent Valley Duck Pond also has picnic benches and a kids' play park, making it a pleasant spot for families.

What kind of natural features can I expect to see around the lakes in the Mourne AONB?

The lakes in the Mourne AONB are set amidst rugged terrain, granite peaks, and heathered slopes. You'll find impressive mountain scenery, such as around Silent Valley Reservoir and Ben Crom Reservoir. Lough Shannagh, known as the 'Lake of the Foxes,' offers a wilderness experience with its natural mountain lough and views from nearby Doan mountain.

Are there any historical or cultural landmarks near the lakes?

Yes, the region has a rich heritage. Silent Valley Reservoir itself is a significant engineering feat, with its Victorian-style dam and the impressive 22-mile-long Mourne Wall. Near Lough Shannagh, you can find historical aspects like abandoned cottage ruins and 'famine fields,' offering a glimpse into the area's past. Additionally, you can view Castlewellan Castle overlooking a lake, though it's not open to the public.

What outdoor activities can I do near the lakes in the Mourne AONB?

The area around the lakes is ideal for various outdoor activities. You can find numerous hiking opportunities, from easy strolls to challenging mountain hikes. For example, explore routes like the 'Lakeside Walk' or 'Tollymore Forest River Trail' mentioned in the Easy hikes in Mourne Aonb guide. Mountain biking is also popular, with trails such as the 'Castlewellan MTB Trails' detailed in the MTB Trails in Mourne Aonb guide. Fishing is also possible at lakes like Camlough Lake.

Are there specific hiking trails around the reservoirs?

Yes, both Silent Valley and Ben Crom Reservoirs offer walking opportunities. At Silent Valley Reservoir, you can enjoy woodland walks and well-maintained paths. Further up the Kilkeel River valley, the Ben Crom Dam Walk is a popular 10km trail that takes visitors to Ben Crom Reservoir, passing the exit of the Binnian Tunnel.

What is the best time of year to visit the lakes in the Mourne AONB?

The Mourne AONB lakes offer beauty year-round, but spring and summer provide the most pleasant weather for walking and outdoor activities, with vibrant greenery and blooming heather. Autumn brings stunning colors to the landscape. While winter can be beautiful, be prepared for colder temperatures and potentially challenging conditions on higher trails.

Is there parking available at the lakes?

Yes, parking is generally available at the more accessible lakes and reservoirs. Silent Valley Reservoir has visitor parking, and Spelga Dam offers a car park that provides a stunning lookout over the reservoir. For more remote loughs like Lough Shannagh, access might require parking further away and walking in.

Can I find food and drink options near the lakes?

Yes, Silent Valley Reservoir has a coffee shop on its grounds, providing refreshments for visitors. For other lakes, especially those in more remote mountain settings, it's advisable to bring your own provisions for picnics, such as at Spelga Dam or Sandy beach at Lough Shanna.

What makes Lough Shannagh unique among the Mourne AONB lakes?

Lough Shannagh, also known as the 'Lake of the Foxes,' stands out as a natural mountain lough offering a true wilderness experience. Unlike the larger reservoirs, its terrain is often unsurfaced and hilly, providing a more rugged adventure. It features a small gravel beach, perfect for picnics, and walks to the lough cross the historic Mourne Wall, offering superb views, especially from nearby Doan mountain.

What do visitors enjoy most about the lakes in the Mourne AONB?

Visitors consistently praise the tranquil atmosphere and impressive natural beauty. Many appreciate the blend of natural landscapes with significant engineering feats like the dams and the Mourne Wall. The opportunity for peaceful walks, stunning viewpoints, and the chance to pause and enjoy the scenery, as described for Blue Lough, are frequently highlighted.

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