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Germany
North Rhine-Westphalia
Bergisches Land
Rheinisch-Bergischer Kreis

Große Dhünntalsperre

Top 6 Lakes around Große Dhünntalsperre

Best lakes around Große Dhünntalsperre include Germany's second-largest drinking water dam, the Große Dhünntalsperre, along with its two significant pre-dams, the Große Dhünn Pre-Dam and the Kleine Dhünn Pre-Dam. This expansive reservoir system is situated within a nature reserve, characterized by varied topography, large forest areas, and open meadows. The area provides extensive hiking opportunities, with trails offering views of the water and surrounding natural landscapes. Direct recreational water sports are prohibited to maintain drinking water quality.

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Last updated: October 14, 2026

Great Dhünn Reservoir

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Here you have a great view of the large Dhünntalsperre, after all Germany's second largest drinking water dam. All around is a lot of nature with many rare and protected species.

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View of the Kleine Dhünn forebay

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The "Dhünn plateau" around the Great Dhünn Dam and the Eifgen Valley is widely known for its impressive and varied landscape in the midst of beautiful nature: characterized by a …

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View of the Dühntalsperre

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Here you have the first beautiful view of the Dhünntalsperre.

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Ascent to Unterberg

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Coming from Unterberg initially paved forest path, last part then paved forest path. But you can go downhill and up well.

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Dünnener Meer

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A pleasant change on a short hike with many scents in the autumn light

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River dams in Germany’s Bergisches Land

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Isi-Sicilia
July 19, 2026, Ascent to Unterberg

Especially in the morning or at sunset, the atmosphere is magical.

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The dam supplies over 1 million people in the region with drinking water and serves flood protection and local recreation.

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41631
September 16, 2025, Dünnener Meer

A pleasant change on a short hike with many scents in the autumn light

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You have to press the pedals a little harder and press the gas pedal uphill 😆

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The Great Dhünntalsperre, fed by the two springs of the Dhünn River, is the second largest drinking water dam in Germany after the Rappbode Dam

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Breathtaking view of the vast dam.

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The view is beautiful, a great place to take a break

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One of many beautiful views.

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Frequently Asked Questions

What are the main hiking opportunities around the Große Dhünntalsperre?

The region offers an extensive network of hiking trails. A notable option is the 40 km long "Talsperrenweg" which circles the entire main reservoir. Additionally, a 12 km circular trail runs around the Große Dhünn Pre-Dam, with sections close to the water's edge. For more specific routes, you can explore easy hikes around Große Dhünntalsperre.

Can I engage in water sports or swim in the Große Dhünntalsperre?

No, direct recreational water sports and swimming are prohibited in the Große Dhünntalsperre and its pre-dams. This is to safeguard the quality of the drinking water, as it serves as Germany's second-largest drinking water dam.

Are there family-friendly activities or trails around the lakes?

Yes, the area is suitable for families, particularly for walks and nature observation. Many trails are accessible and offer beautiful views. The Great Dhünn Reservoir itself is listed as family-friendly, as are viewpoints like the View of Bever Dam.

What kind of natural landscape can I expect to see?

The Große Dhünntalsperre is situated within a nature reserve, featuring a diverse landscape with varied topography, large forest areas, and open meadows. It's home to many rare and protected species, making it an ideal spot for nature observation.

Are there any specific viewpoints I should visit?

Absolutely. The View of the dam at the Große Dhünn forebay offers a clear perspective of the dam separating the pre-dam from the main reservoir. Another great spot is the View of the Dühntalsperre, providing a beautiful initial outlook over the reservoir. For an evening view, consider the View of Bever Dam.

What is the best time of year to visit the Große Dhünntalsperre lakes?

The area is beautiful year-round for hiking and nature observation. While summer can be popular and sometimes crowded, spring and autumn offer vibrant colors and pleasant temperatures. Winter walks are also possible, providing a different, serene atmosphere.

Can I bring my dog on the trails around the lakes?

While the guide data doesn't explicitly state dog-friendly policies for every trail, nature reserves generally allow dogs on leashes. It's always best to check local signage for specific restrictions on individual paths, especially within a drinking water protection area.

What other outdoor activities are available besides hiking?

Beyond hiking, the region offers opportunities for cycling. You can find various routes, including MTB trails and road cycling routes, that explore the diverse landscape around the Große Dhünntalsperre.

What is the significance of the Große Dhünntalsperre?

The Große Dhünntalsperre is Germany's second-largest drinking water dam, crucial for supplying drinking water to the region. It holds 81 million cubic meters of water and covers 440 hectares, playing a vital role in both water management and regional ecology.

Are there guided tours available for the Große Dhünntalsperre?

Yes, guided tours of the Große Dhünntalsperre are available by appointment. These tours can offer deeper insights into the dam's function, its history, and the surrounding nature reserve.

What is the difference between the main reservoir and the pre-dams?

The Große Dhünntalsperre is the expansive main reservoir. It incorporates two significant pre-dams: the Große Dhünn Pre-Dam and the Kleine Dhünn Pre-Dam. These pre-dams serve to pre-treat water before it enters the larger main reservoir, helping to maintain drinking water quality.

How long does it take to walk around the Große Dhünntalsperre?

The "Talsperrenweg" which circles the entire main reservoir is approximately 40 km long. Depending on your pace, this can be a full-day hike or split into multiple sections. The circular trail around the Große Dhünn Pre-Dam is shorter, at just over 12 km.

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