Highlight • Lake
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The Oker Dam Forebay at Altenau, also known as the Okerstausee, is a prominent reservoir nestled in the scenic Harz mountains of Lower Saxony, Germany. This impressive body of water, situated at an elevation of approximately 413 metres, is formed by the Okertalsperre, Germany's only arch-gravity dam. Its distinctive, fjord-like shape with numerous branched arms has earned it the nickname "blue Ypsilon" and makes it a unique natural feature in the region, particularly the section near the charming town of Altenau.
Visitors are consistently drawn to the Oker Dam Forebay for its stunning panoramic views and the tranquil atmosphere it offers. Many highlight the beautiful bridge crossing the water, which provides an excellent vantage point. The reservoir's varied shoreline, with its many bays and winding side valleys, ensures diverse and picturesque viewpoints, making it a favorite spot for those seeking both relaxation and active exploration in the Harz.
Before visiting, it's helpful to know that while the main Okerstausee can experience fluctuating water levels, especially during dry periods, the forebay section near Altenau often maintains a more consistent level, as noted by local visitors. The area is generally well-maintained, but comfortable footwear is always recommended for exploring the walking routes Okerstausee Altenau. Parking Oker Dam Forebay is available, making it accessible for day trips, though it can get busy during peak seasons.
The Oker Dam Forebay is a year-round destination, with each season offering a different charm. It's an ideal spot for various water sports, including swimming, sailing, and diving, unlike some other Harz dams. For those who prefer to stay on land, the well-maintained hiking trails Oker Dam Forebay Altenau are perfect for exploring the surrounding forests and enjoying the natural features Okerstausee. Boat tours on the MS Aquamarin also provide a unique perspective of the reservoir's expansive beauty.
While there isn't one single designated route for the "forebay" specifically, the entire Okerstausee offers a network of trails suitable for all abilities. Many visitors enjoy circular walks Oker Dam Forebay that hug the shoreline, providing continuous views of the water and the surrounding Harz landscape. These paths are generally considered easy to moderate, making them accessible for most hikers and cyclists.
One of the standout experiences for visitors is simply taking in the vastness of the reservoir from the dam wall itself, or discovering hidden coves along the shore. The unique architectural style of the dam, a protected monument from the 1950s, adds a historical dimension to the natural beauty. The area also offers glimpses of the relocated village of Schulenberg when water levels are low, adding a touch of local legend to the visit.
Whether you're looking for family friendly hikes Oker Dam Forebay, a challenging cycling route, or simply a peaceful stroll, the Oker Dam Forebay at Altenau provides a wealth of options. Explore the many routes available on komoot to plan your perfect adventure, from easy walks to longer treks, and discover the best hikes Altenau lake has to offer. You'll also find cafes near Oker Dam Forebay Altenau for a refreshing break.
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Nearby routes
Best routes near Oker dam reservoir near Altenau

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Moderate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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Hard bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
Details
Informations
Elevation 410 m
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Max wind speed: 21.0 km/h
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While the intro mentions a network of trails for all abilities, many hikers enjoy circular walks that hug the shoreline, offering continuous views. These paths are generally considered easy to moderate. For a longer, more immersive experience, you can explore routes that encompass the entire Okerstausee, which can be found on komoot. The terrain is varied, ranging from well-maintained paths to more natural forest trails.
Beyond the impressive dam wall and the scenic bridge, keep an eye out for the distinctive Kästeklippen rock formations, which add to the 'wildly romantic' landscape. The reservoir itself, with its many branched side arms, is a natural wonder, often called the 'blue Ypsilon' from above. When water levels are particularly low, remnants of the old village of Schulenberg, which was relocated during the dam's construction, can sometimes be seen, adding a historical and almost legendary touch to your visit.
Parking is available, but it can get quite busy, especially during peak seasons like summer. To secure a spot, particularly if you're visiting on a weekend or public holiday, it's strongly recommended to arrive before mid-morning. There are parking areas near the dam wall and along the B 498 federal road that traverses the reservoir, offering various access points to trails and viewpoints.
Yes, the Oker Dam Forebay is accessible by public transport. Bus services connect the area to nearby towns like Altenau and Goslar. It's advisable to check local bus schedules in advance, especially for weekend services, to plan your journey effectively.
Generally, no specific permits are required for hiking on the established trails around the Oker Dam Forebay. The area is open for public recreation. However, if you plan to engage in fishing, you will need a valid fishing license and a day permit for the reservoir. For water sports like sailing or diving, ensure you adhere to any local regulations or restrictions.
While the intro highlights it as a year-round destination, winter transforms the Oker Dam Forebay into a serene, often snow-covered landscape. Hiking trails remain accessible, offering peaceful winter walks with crisp air and unique views. Depending on conditions, cross-country skiing might be possible on some trails. Always check local weather and trail conditions before heading out in winter, as some paths might be icy.
Absolutely! The Oker Dam Forebay is very family-friendly. Many of the circular walks along the shoreline are easy and suitable for children. The MS Aquamarin boat tour offers a fun way for families to experience the reservoir. Additionally, the area provides opportunities for swimming and pedal boating, making it an excellent destination for a family day out. The nearby Romkerhall Waterfall is also a popular attraction for all ages.
Yes, the Oker Dam Forebay is generally dog-friendly, and many hikers bring their canine companions. Dogs are usually welcome on the hiking trails, but it's important to keep them on a leash, especially in areas with wildlife or near other visitors. Always remember to clean up after your dog to help maintain the natural beauty of the area.
The dense forests and diverse landscape around the Oker Dam Forebay are home to various wildlife. You might spot deer, wild boar, and a variety of bird species, including waterfowl on the reservoir. The area's rich flora and fauna make it a rewarding spot for nature observation, particularly during quieter times of the day.
Unlike some other Harz dams, the Okerstausee is indeed suitable for various water sports, including swimming. While there aren't always officially designated 'wild swimming' spots, many visitors enjoy swimming in the reservoir's clear waters. Always exercise caution, be aware of boat traffic, and avoid swimming near the dam structure itself. The numerous bays and calmer sections of the forebay offer pleasant spots for a refreshing dip.
The towns of Altenau and Schulenberg, both very close to the Oker Dam Forebay, offer a range of accommodation options. You can find hotels, guesthouses, holiday apartments, and even campsites. These towns provide convenient bases for exploring the reservoir and the wider Harz region, with many options catering to hikers and outdoor enthusiasts.
Yes, there are options for refreshments. The intro mentions cafes near the Oker Dam Forebay Altenau. You'll find eateries in the nearby towns of Altenau and Schulenberg. Additionally, the famous 'Windbeutel-König' is a popular spot in the vicinity, known for its large cream puffs, offering a unique culinary experience after your outdoor activities.