Best natural monuments around Rieste are characterized by picturesque natural surroundings, with the Alfsee lake being a prominent natural feature. This area in the district of Osnabrück, Germany, offers diverse landscapes centered around water bodies. The Alfsee functions as a flood retention basin for the Hase river and a significant local recreational area. Its environment provides opportunities for enjoying nature and various outdoor activities.
Last updated: June 25, 2026
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The 330 m long overflow sill, the inlet of the Alfsee, was built in 1974 with a 10 hectare settling basin. This is where sand and alluvial particles that would worsen the water quality of the lake are supposed to settle. The outlet structure was also built in 1974.
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As early as 1999, the western Hase dam in the Gehrde-Rüsfort area was moved back over a length of 1.4 km. Around ten years later, the Hase dam was moved over a length of 0.8 km on the east bank. The additional lowering of the ground level has led to the development of fresh grassland and reed zones that correspond with the groundwater. This also enables periodic flooding typical of floodplains. The revitalized Hase floodplains also offer additional retention space for future flood events. Various wet biotopes and pools were also created. By establishing flora that is suitable for the site, a natural floodplain landscape is created in which various birds, reptiles, amphibians, grasshoppers and dragonflies find suitable habitats.
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The Hase is a 169.6 km long, eastern and orographically right tributary of the middle Ems in the Osnabrück district, the independent city of Osnabrück, the Cloppenburg district and the Emsland district (all in Lower Saxony) as well as the Steinfurt district (in North Rhine-Westphalia). Its catchment area is 3086 km²[2]. Near Gesmold, the Else branches off from the Hase in the artificially created Hase-Else bifurcation, whereby part of its water also flows into the Weser river system. Much further north, the Hase branches off into the Große Hase and Kleine Hase near Quakenbrück in an inland delta that begins there, the Hasedelta.
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The Hase flows through small gates into the Alfsee.
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The water of the Hase flows through the Alfsee.
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It's best to drive on top of the dike instead of on the small pavement below.
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The overflow threshold is passable and I recommend this little detour for the great view over the lake and the sound of the water.
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Surprise at the summit cross, I would probably call it a hill cross. In the little box on the cross is the "Gipfelbuch", in which everyone can write their names. A great idea! The place on the Schmittenhöhe offers a few places to rest, especially benches. The way there is surrounded by wonderful nature. The forest is impressive and very mythical in some places.
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The natural landscape around Rieste is largely defined by its water bodies. The most prominent is the Alfsee, which serves as both a flood retention basin and a significant recreational area. Other notable features include the Alfsee Overflow Weir, Hase Lake, and the River Hase, all offering diverse natural experiences.
The Alfsee is unique as it functions both as a crucial flood retention basin for the Hase river and a vibrant recreational hub. It's also recognized as an EU bird protection area, making it an excellent spot for birdwatching. The Nature and Education Center (nbz Alfsee) provides insights into local birdlife, including white storks and ospreys.
Yes, the natural monuments around Rieste are very family-friendly. The Alfsee offers extensive leisure programs, including camping, swimming, and water sports. The paved path around Hase Lake is ideal for easy walks or bike rides with children. Many trails around the Alfsee are also suitable for families.
The area around Rieste's natural monuments is perfect for various outdoor activities. You can enjoy cycling on routes like the 'Birdwatching at the Alfsee' loop, or explore hiking trails such as the 'Alfsee South Dam – View of the Alfsee' loop. For more options, you can find detailed guides for cycling, hiking, and gravel biking around Rieste.
The natural monuments around Rieste, particularly the Alfsee, are enjoyable throughout the year. While summer is popular for water activities and camping, the area is not typically overcrowded, even in the evenings. Spring and autumn offer pleasant temperatures for hiking and cycling, and the Alfsee is a valuable spot for birdwatching year-round.
Yes, the Alfsee is designated as an EU bird protection area, making it an excellent location for birdwatching. You might spot white storks, ospreys, and even the white-tailed eagle. The Nature and Education Center (nbz Alfsee) offers interactive exhibits to learn more about the local birdlife.
The Alfsee Overflow Weir offers a great detour for views over the lake and the soothing sound of the water. Additionally, the Schmittenhöhe Summit Cross (Kalkriese Hill), located northwest of Ostercappeln, provides elevated views and a peaceful resting spot amidst nature.
While the natural areas around Rieste are generally dog-friendly, specific leash requirements may apply, especially in designated nature reserves or bird protection areas like parts of the Alfsee. It's always best to keep dogs on a leash to protect wildlife and ensure a pleasant experience for all visitors.
Visitors particularly appreciate the serene setting of the Alfsee for relaxation and its extensive recreational offerings. The well-developed paths around Hase Lake are popular for walks and bike rides. Many also enjoy the peaceful atmosphere and the opportunity to observe nature, even finding quiet spots in the evenings.
Rieste and the Alfsee area are accessible by public transport, primarily through local bus routes connecting to nearby towns in the Osnabrück district. Specific bus routes can take you close to the main natural attractions. It's advisable to check local transport schedules for the most current information on routes and timings.
Yes, there are cafes, restaurants, and accommodation options available near the natural monuments, particularly around the Alfsee. You can find places for coffee and cake, such as Rhodes Heuerhaus, and various camping facilities. The area is well-equipped to cater to visitors looking for a break or an overnight stay.
Hiking trails around the Alfsee generally range from easy to moderate. For example, the 'North shore of the Alfsee – Viewpoint Reserve Basin Alfsee' loop is considered easy, while the 'Alfsee South Dam – View of the Alfsee' loop is moderate. Many paths are well-maintained and suitable for various fitness levels, including families.


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