Best attractions and places to see around Innerstetalsperre are centered on its reservoir and the surrounding Harz landscape. Located in the northwestern Harz region, the area is known for its natural beauty and outdoor recreational opportunities. The Innerstetalsperre dam, measuring 750 meters, is the longest earth dam in the Harz Mountains and plays a role in flood protection and drinking water supply. The artificial lake offers various water activities and is encircled by popular hiking and cycling paths.
Last updated: May 9, 2026
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Popular around Innerstetalsperre
There's plenty of parking here. But it can get crowded during swimming season.
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The best ICE CREAM at the Innerstetalsperre 😋😋
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The Innerstetalsperre is a dam on the Innerste, which is located near Langelsheim and Wolfshagen in the Harz Mountains. It was built from 1963 to 1966 and belongs to the Harzwasserwerke. Their purpose is to provide drinking water, flood protection, increase low water levels and generate electricity. The average annual discharge from the Innerste Dam is 60 million m³. Source wikipedia
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The Innerste cycle path runs between Clausthal-Zellerfeld and Sarstedt over 105 beautiful kilometers. Advanced culture along the way Numerous sacred buildings and secular mansions are located on the Innerste cycle path. A highlight is the Marktkirche in Clausthal-Zellerfeld – the largest wooden church in Germany. In Hildesheim, St. Andreas with the highest church tower in Lower Saxony, St. Michael's Church and the cathedral with the famous thousand-year-old rose bush are the highlights. Also impressive: the castles in the Middle Innerstetal - Baroque Liebenburg Castle (Baroque church, sculpture park), Ringelheim Castle (monastery church, Baroque organ), Derneburg Castle (Laves culture trail, glass house) and Oelber Castle (former water castle of the century), all of which are privately owned . Thousands of years of mining history In the Harz, the mining landscape comes to life. Experience the water art of the Upper Harz water management, visit the Upper Harz Mining Museum in Clausthal-Zellerfeld.
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🤗🤗 Wonderful cooling down with the ice cream truck on site on our hike in very warm temperatures 🌡☀️🍦
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The Innersteradweg starts in the Harz Mountains and leads through the picturesque Innerste river valley to Hildesheim
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105 kilometers by bike from the Upper Harz Mountains to the Leine Valley
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The Innerstetalsperre area offers a wide range of outdoor activities. You can enjoy water sports like swimming, sailing, fishing, and windsurfing on the Innerste Reservoir. For land-based activities, there's a popular 7-kilometer circular path around the reservoir for hiking and cycling. Additionally, the Innerste Cycle Path, which follows a former railway line, provides a scenic route for cyclists. In winter, parts of the old Innerstetalbahn route are even used for cross-country skiing.
Yes, the area is well-suited for easy hikes. The 7-kilometer circular path around the Innerste Reservoir is a popular and accessible option. Many trails, including those that follow the former Innerstetalbahn railway line, offer relatively flat terrain, making them suitable for beginners and those looking for a relaxed walk. For more options, you can explore various easy routes listed in the Hiking around Innerstetalsperre guide.
The most notable cycling path is the Innerste Cycle Path, which runs between Wildemann and Langelsheim. This path follows the route of the former Innerstetalbahn railway line, offering a secluded and scenic ride through natural surroundings. It's also part of the Lower Saxony long-distance cycle path (RFW) No. 5, the Weser-Harz-Heide long-distance cycle path. A 7-kilometer circular path around the reservoir is also popular for cycling.
Yes, despite its role in drinking water production, the Innerste Reservoir is open for various water activities. You can swim, sail, fish, windsurf, and row. Motorboats are prohibited to maintain tranquility. The shallow shore zones are particularly ideal for families with children.
Absolutely! Innerstetalsperre is very family-friendly. The shallow shore zones of the Innerste Reservoir are ideal for children to play and swim. The circular hiking and cycling path around the reservoir is also suitable for families, offering picturesque views and easy terrain. Many highlights, such as the Innerste Cycle Path and the Innerste Reservoir Overflow Tower, are categorized as family-friendly.
While the guide data doesn't explicitly state dog-friendly policies for every trail, the natural environment of Innerstetalsperre and the Harz region generally welcomes dogs on leashes. Many hiking and cycling paths, like the circular route around the reservoir and the Innerste Cycle Path, are popular with dog owners. Always ensure your dog is on a leash and you clean up after them to preserve the natural beauty for everyone.
A striking landmark is the Innerste Reservoir Overflow Tower, a unique monument and a key part of the dam's flood protection system. The dam itself, measuring 750 meters, is the longest in the Harz Mountains and offers impressive views. The entire circular path around the Innerste Reservoir provides numerous scenic viewpoints of the lake and the surrounding Harz landscape.
There is a dedicated Innerstetalsperre Parking Area available. It's a free hiking car park located right on the side of the road, making it convenient for accessing the trails and the reservoir. During warmer seasons, you might even find an ice cream truck there for a refreshing treat after your tour.
Innerstetalsperre is beautiful year-round, but the best time depends on your preferred activities. Spring and autumn offer pleasant temperatures for hiking and cycling, with vibrant foliage or blooming nature. Summer is ideal for water sports like swimming and sailing. In winter, parts of the old Innerstetalbahn route are used for cross-country skiing, offering a different kind of outdoor experience.
The Innerstetalsperre area is primarily celebrated for its natural environment and recreational activities. While the broader Niedersachsen region offers diverse cultural experiences, specific cultural or historical sites are not prominently located directly within the immediate vicinity of the reservoir. The dam itself and the Innerste Reservoir Overflow Tower represent significant engineering history.
On the east bank of the Innerste Reservoir, you'll find a campsite for overnight stays. The Berghof am See is another popular spot, offering a restaurant and accommodation, making it a good base for exploring the area. There are also benches around the reservoir for resting and enjoying the views.
Visitors particularly appreciate the scenic beauty and the variety of outdoor activities. The circular path around the reservoir is highly praised for its picturesque views and accessibility. Many enjoy the tranquility of cycling along the Innerste Cycle Path through tree-lined nature. The unique Innerste Reservoir Overflow Tower and the impressive dam are also frequently mentioned as highlights.


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