Lakes around Wetter (Ruhr) are primarily part of the Ruhr reservoir system, offering diverse recreational activities and natural landscapes. This region, situated in the Ruhr Valley, features several artificial reservoirs like Harkortsee, Hengsteysee, and Kemnader See. These lakes are integral to the Ruhr River's course, providing a blend of natural beauty and developed infrastructure for outdoor pursuits. The area is known for its scenic routes, water sports opportunities, and historical landmarks.
Last updated: May 9, 2026
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The Hengsteysee is located near Hagen below the confluence of the Lenne and the Ruhr. At the time of its commissioning, the mixing of the acidic and iron-containing Lenne water with the alkaline Ruhr water resulted in increased sludge precipitation and thus an intensive cleaning effect. Today, it is primarily the Ruhrverband's ultra-modern sewage treatment plants that ensure the water quality, but the reservoirs are still essential as a fine purification stage for discharged rainwater and as a bedload trap for river gravel from the Lenne. In addition, the Hengsteysee has been used since it was commissioned as a lower basin for the Herdecke pumped storage power plant (Koepchenwerk) built by RWE. Due to the pumped storage operation, the water level in the Hengsteysee can fluctuate by up to 70 centimeters. In 1988/89, the sediment deposited up to that point, amounting to around 400,000 cubic meters, was removed from the Hengsteysee using a dredging process. s.a. Ruhrverband
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Impressive building and now almost 150 years old.
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The Ruhr Viaduct in Herdecke spans the valley with a length of 313 m and 12 semi-circular arches, each with a span of 20 m.
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The weir seen from the bridge has four openings closed with hydraulically operated flaps. Next to the weir are the fish ladder and the boat alley. In the case of large floods, the entire system is flooded. In 2011, a hydroelectric power station was built on the right side of the weir. The entire Ruhr flows through the power plant and enables electricity to be generated by around 3.6 million kWh annually.
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The weir has four openings that are closed with hydraulically driven flaps. Next to the weir are the fish ladder and the boat alley. In the case of large floods, the entire system is flooded. In 2011, a hydroelectric power station was built on the right side of the weir. The entire Ruhr flows through the power plant and enables electricity to be generated by around 3.6 million kWh annually.
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A very beautiful part of the Ruhr Valley Cycle Path and the Lenne Route. Hengsteysee and Harkortsee belong together like brother and sister. Both are former bodies of water used by heavy industry that have been converted into well-used recreational waters with good water quality, flora and fauna. There are plenty of places to stop for a break around Hengsteysee and Karkortsee. Note: In many places there are designated cycle facilities (sign 237) and designated pedestrian paths (sign 239). For those walking or running, whether with children and dogs or alone, please use the paths specially set up for you and do not walk on the cycle lanes. Just as it is our duty to use the cycle lanes, it is our duty for pedestrians to use the footpath. Below the serpentine road coming from the B54 is a biker meeting point Hohensyburg 🤠 👍 If you see an "E-Biker" 🤜 there, then the steam on the gas tap
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and another beautiful view on the hike from the Hohensyburg to the Ruhr Bridge.
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If you drive during the week, then it's ok. At the weekend, like many other tours, it is just too crowded. The Ruhr Valley Cycle Path is particularly popular
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The lakes around Wetter (Ruhr) offer a wide range of outdoor activities. You can enjoy water sports like sailing, canoeing, windsurfing, and rowing on Harkortsee and Hengsteysee. For land-based activities, there are extensive paths for cycling, walking, and inline skating, particularly around Lake Kemnade. The region is also popular for hiking and mountain biking, with numerous routes available. For example, you can find various hiking routes around Wetter, including circular walks along the lakes.
Yes, the lakes offer several family-friendly options. Harkortsee features playgrounds near Wetter and amenities like Klutes Minigolf-Oase. Both Harkortsee and Hengsteysee offer boat rentals for pedal boating or canoeing, and passenger ships like MS Harkort and "Freiherr vom Stein" provide scenic round trips. The paved paths around Lake Kemnade are also suitable for family bike rides or strolls.
The lakes are set amidst picturesque natural landscapes. You can find stunning viewpoints such as the View of the Hengsteysee, which offers expansive vistas of the lake and surrounding forested Hohensyburg ridgeline. The Ruhr Viaduct at Harkort Lake is another notable feature, providing a scenic backdrop. The trails around Hengsteysee also offer great views of the historic Syburg castle ruins and the Hermann monument.
Yes, the region combines natural beauty with historical significance. Overlooking Harkortsee, you can explore the historic Burg Wetter castle ruins, which offer impressive views of the Ruhr Valley. The Ruhr Viaduct at Harkort Lake, a 313-meter-long sandstone construction, is itself a significant man-made monument and a great photo opportunity. Additionally, the trails around Hengsteysee lead to the historic Syburg castle ruins.
Cycling is very popular around the lakes. The RuhrtalRadweg runs along the northern shore of Harkortsee, offering well-maintained paths and scenic views. Lake Kemnade is particularly well-suited for cycling, featuring three paved paths, with a full loop around the lake being approximately 8 to 10 kilometers long. You can also find various MTB trails around Wetter that incorporate lake views.
Yes, there are many easy walking and hiking trails. The RuhrtalRadweg, which follows the shores of Harkortsee, is suitable for long, leisurely walks. Lake Kemnade has dedicated paths for pedestrians, making it ideal for easy strolls. The trails around Hengsteysee also offer picturesque routes for walks towards Harkortsee, providing great views without significant elevation changes.
The lakes in the Wetter (Ruhr) area are generally accessible by public transport, though specific routes and stops vary. Major lakes like Harkortsee and Hengsteysee are well-integrated into the regional transport network, often with bus connections from nearby towns like Wetter, Hagen, and Herdecke. It's advisable to check local bus and train schedules for the most convenient access to your desired lake.
Yes, you'll find various gastronomic options around the lakes. Harkortsee, for example, has cafes and restaurants, particularly in Herdecke and Wetter. The area around Lake Kemnade also features places to eat, including an ice cream van that has been a long-standing fixture. The promenades along the lakes often have establishments where you can relax and enjoy a meal or a drink.
The lakes are beautiful year-round, but the best time to visit largely depends on your preferred activities. Spring and summer (April to October) are ideal for water sports, boat trips, and enjoying the lush greenery. The passenger ships on Harkortsee and Hengsteysee operate during these months. Early mornings, especially at Lake Kemnade, are recommended for peace and quiet and beautiful sunrises. Autumn offers stunning foliage, while winter can provide a serene, quiet experience for walks, though some amenities might be closed.
Many of the walking paths and trails around the lakes are dog-friendly, allowing you to enjoy the scenery with your canine companion. The RuhrtalRadweg and the paths around Lake Kemnade are generally suitable for walks with dogs, provided they are kept on a leash. Always be mindful of local regulations and other visitors.
Harkortsee is popular for its diverse water sports, including sailing, canoeing, and windsurfing. It's also known for the scenic RuhrtalRadweg along its northern shore and the impressive Ruhr Viaduct, a significant photo opportunity. The lake also offers passenger boat trips on the MS Harkort and is overlooked by the historic Burg Wetter castle ruins.
Hengsteysee is a hub for water sports enthusiasts, with clubs and boat rentals. A key attraction is the passenger ship "Freiherr vom Stein," which cruises the reservoir, offering unique views. The lake is also a starting point for scenic walks along the Ruhrtalweg towards Harkortsee and provides access to trails with views of the forested Hohensyburg ridgeline, including the historic Syburg castle ruins.
While the main lakes can be popular, you can find quieter moments. Lake Kemnade is particularly recommended in the early morning hours for those seeking peace and quiet, with sunrises over the lake offering a beautiful experience before the crowds arrive. Visiting during weekdays or outside of peak holiday seasons can also provide a more tranquil visit to any of the lakes.


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