Arnsberg District
HochsauerlandkreisMarsbergDiemelsee Dam
Arnsberg District
HochsauerlandkreisMarsbergDiemelsee Dam
Highlight • Monument
Diemelsee Dam
Cycling
4.8
(1527)
Hiking
4.8
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Mountain biking
4.9
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Road cycling
4.8
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Running
4.9
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Gravel riding
5.0
(7)
The Diemelsee Dam, also known as Diemelstaumauer, is an impressive man-made monument and historical site nestled in the picturesque Diemelsee Nature Park, at an elevation of approximately 379 meters. Located in the northeastern foothills of the Rothaar Mountains, it spans the border between the counties of Waldeck-Frankenberg in North Hesse and Hochsauerlandkreis in Westphalia, Germany. This curved gravity wall, standing 42 meters high and stretching 194 meters long, forms the expansive Diemelsee reservoir, a crucial part of the Diemeltalsperre hydropower system and a vital component in regulating water levels for the River Weser and the Mittelland Canal.
Visitors are consistently drawn to the Diemelsee Dam for its blend of engineering marvel and natural beauty. Hikers, cyclists, and water sports enthusiasts alike praise the area for its diverse recreational opportunities and tranquil atmosphere. The dam itself offers an impressive vantage point, providing expansive views south over the forest-lined Diemelsee and north towards the historic power plant building below, where the River Diemel continues its journey. Many find it a place of relaxation, symbolizing "power and strength" within the Sauerland region.
Before heading out, visitors should be aware that the area offers a variety of terrain, from paved cycle paths to more rugged hiking trails. Comfortable footwear is recommended for exploring the dam and its surroundings. Parking is generally available in nearby villages like Helminghausen, and while the area can be popular, especially on sunny weekends, there's ample space to enjoy the natural setting. Preparing for variable weather is always wise when visiting the Rothaar Mountains, ensuring a pleasant experience regardless of the conditions.
The Diemelsee Dam is a fantastic destination year-round, with each season offering unique charm. Spring and autumn bring vibrant colors to the surrounding forests, ideal for hiking and cycling, while summer is perfect for water sports on the lake, including swimming, canoeing, and even exploring on "Diemel Donuts." The overflowing of the Diemel Dam, typically in early spring, is a particularly spectacular event. Popular activities include walking the circular paths around the dam, exploring the Diemelsteig trail for scenic views, or enjoying a leisurely boat trip on the reservoir.
The experience of visiting the Diemelsee Dam is often described as both awe-inspiring and peaceful. Hikers speak of the rewarding feeling of completing a circular walk around the reservoir, taking in the glistening water and the impressive scale of the dam. The historical significance of the structure, completed in 1924 and now a listed monument, adds another layer of appreciation for those interested in industrial heritage. Whether it's the quiet beauty of the lake or the sheer power of the dam, there's a unique moment for every visitor.
For those looking to explore the area further, a wide array of routes awaits. From gentle family-friendly walks along the reservoir promenade to more challenging mountain biking trails through the Diemelsee Nature Park, there's something for every activity level. You can discover numerous hiking trails, cycling routes, and running paths around the Diemelsee Dam, making it easy to plan your next adventure. With komoot, you can find and plan your perfect route, whether you're seeking a leisurely stroll or an invigorating trek.
This Highlight is in a protected area
Please check local regulations for:
Tips
April 8, 2021
Hiking
The approximately 42-meter-high dam, completed in 1924, and the power plant building are now listed as historical monuments. The view of the dam is impressive.
The dam is also considered one of the Sauerland's spiritual places. It symbolizes the theme of "power and strength."
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September 16, 2019
Mountain biking
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October 30, 2018
Cycling
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Nearby routes
Best routes near Diemelsee Dam
Details
Informations
Elevation 380 m
Weather
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Thursday 28 May
27°C
8°C
65 %
Additional weather tips
Max wind speed: 18.0 km/h
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Frequently Asked Questions
What are the best hiking trails around Diemelsee Dam, and what is their difficulty?
The Diemelsteig is a highly recommended trail offering breathtaking views of the glistening water and the surrounding forested landscape. It's generally considered a moderate hike. For those seeking a more leisurely experience, there are numerous circular paths directly around the dam and along the reservoir promenade, which are suitable for families and less strenuous walks. More challenging mountain biking trails are also available in the wider Diemelsee Nature Park.
How deep is the Diemelsee reservoir?
The Diemelsee reservoir has a maximum depth of 34 meters (approximately 111 feet). Its surface area spans 1.65 square kilometers (about 0.64 square miles).
Is the Diemelsee Dam area suitable for families with children?
Absolutely! The Diemelsee Dam and its surroundings are very family-friendly. There are gentle, accessible walks along the reservoir, and designated lidos for swimming. Beyond the dam, the Diemelsee Nature Park offers attractions like the Visionarium (an interactive exhibition), visitor mines, corn mazes, and mini-golf courses, providing plenty of activities for all ages.
Are dogs allowed on trails and in the Diemelsee area?
Yes, the Diemelsee area is generally dog-friendly. Many hiking trails welcome dogs, and there are even designated dog beaches at some of the lidos around the lake. Always ensure your dog is on a leash where required and clean up after them to maintain the natural beauty of the park.
What water sports can I do on Diemelsee?
Diemelsee offers a wide range of water sports. You can enjoy swimming at designated lidos, canoeing, and sailing. Pedal boats, rowing boats, and electric boats are available for rent, and visitors can even explore the lake on unique "Diemel Donuts", which are circular boats accommodating several people. There's also a specific bay designated for diving.
Where can I find parking near Diemelsee Dam, and how busy does it get?
Parking is generally available in nearby villages such as Helminghausen. While there is ample space, the area can become quite popular, especially on sunny weekends and during peak season. Arriving earlier in the day, particularly before mid-morning, is recommended to secure a spot without hassle.
Are there any accessible routes or facilities for visitors with mobility challenges?
Yes, the Visionarium, an interactive exhibition about the lake and dam, is designed to be barrier-free. While some of the more rugged hiking trails may not be suitable, there are accessible paths and promenades along parts of the reservoir that offer pleasant views and easy access for visitors with mobility challenges.
What is the historical significance of the Diemelsee Dam?
The Diemelsee Dam is a significant man-made monument with a rich history. Construction began in 1912 and was completed in 1923, with its inauguration in 1924. It was built using robust greenstone by ninety quarry masons from Italy and Serbia. The dam and its associated power station building are recognized as historical monuments, symbolizing "power and strength" and playing a crucial role in water regulation for the River Weser and the Mittelland Canal.
Are there cafes, pubs, or accommodation options near Diemelsee Dam?
Yes, the Diemelsee region is a popular tourist destination, so you'll find various options. There are cafes and restaurants in the nearby villages, such as Helminghausen and Heringhausen, offering refreshments and meals. For accommodation, you can find hotels, guesthouses, and holiday apartments in these villages and the surrounding area, catering to different preferences and budgets.
What are some hidden gems or less-known viewpoints around Diemelsee Dam?
While the dam itself offers expansive views, exploring the surrounding peaks like St. Muffert and Eisenberg can reward hikers with stunning panoramic vistas of the Diemelsee and the nature park. Additionally, taking a boat trip on the lake can offer unique perspectives of the dam and the forested shoreline that you might not get from land-based viewpoints.
Is Diemelsee Dam a good destination for winter activities?
While the intro highlights spring, autumn, and summer, the Diemelsee Dam can still be a rewarding winter destination. The landscape takes on a serene beauty under snow, making it suitable for winter hikes, provided conditions are safe and trails are clear. The overflowing of the dam, typically in early spring, can also be a spectacular sight to witness if you visit towards the end of winter.