The Dümmer (German pronunciation [ˈdʏmɐ]), officially known as Dümmer See, is a shallow freshwater lake in the southern part of the German state of Lower Saxony. It covers an area of approximately 13.5 km² (5.2 sq mi) and has an average depth of about 1 m (3 ft 3 in), with a maximum depth of roughly 1.5 m (4 ft 11 in). The lake lies at an elevation of 37 m (121 ft) above sea level.
Geography and hydrology
The primary inflow and outflow of the Dümmer is the River Hunte, which traverses the lake and exits via several distributaries. The lake is situated within the Dümmer depression, a low‑lying area bordered to the west by the Damme Hills and to the east by the Stemweder Berg. The surrounding landscape includes fens (Niedermoore) and raised bogs (Hochmoore). The lake’s shoreline is shared mainly by the district of Diepholz, with portions of the western shore belonging to the district of Vechta. Nearby settlements include Lembruch, Hüde and Damme.
Ecology and protection
The Dümmer is an important biotope for water birds and serves as a significant stopover for migratory species. Large sections of its shore are protected as nature reserve areas, and the lake was designated a Ramsar wetland of international importance on 26 February 1976 (Ramsar reference 85). It lies within the Dümmer Nature Park, an area of nearly 500 km² that supports a diverse array of flora and fauna, including breeding populations of waterfowl, waders and raptors.
Recreation
Because of its extensive shallow waters, the Dümmer is a popular destination for water‑sports such as sailing, windsurfing, swimming and fishing. The lake’s gentle conditions also make it suitable for hiking and cycling along the surrounding trails.
Etymology
The name “Dümmer” is first recorded in 965 as “diummeri”. It is probably derived from the Low German word dummerig meaning “moist” or “shaded”, combined with Meer (literally “sea”), a regional term for still inland waters surrounded by marshes. An alternative hypothesis links the name to the southern Dutch word doom (“mist” or “broom”).
Historical context
Historically, the lake’s surrounding territories were part of the Electorate of Hanover and the Diocese of Münster, later becoming incorporated into Oldenburg Münsterland after the German Mediatisation of 1803.
References
- Wikipedia contributors, “Dümmer,” Wikipedia, The Free Encyclopedia, accessed 2024.
- Ramsar Convention on Wetlands, “Dümmer Lake,” Ramsar Site Information Service.
