Alfsee
| Alfsee | |
|---|---|
 | |
| Country | Germany |
| Location | Osnabrück |
| Coordinates | 52°29′16″N07°58′29″E/ 52.48778°N 7.97472°E |
| Opening date | 1971 |
| Dam and spillways | |
| Length | 320 m |
| Width (base) | 17 m |
| Reservoir | |
| Total capacity | 20 million m³ |
| Surface area | 2.2 km² |
TheAlfseeis areservoirin the north of the district ofOsnabrückin the state ofLower Saxonyin northGermany.It has an area of 2.2 km².
It acts as a floodretention basinfor thecatchment areaof theHaseand as local recreational area.
Geography
[edit]The Alfsee is located in the north ofBramgauinOsnabrücker Land.It lies around 25 km north of the city ofOsnabrückand 8 km north ofBramsche,southeast of theAnkum Heights.About 95% of its area belongs to the parish ofAlfhausento the west, after which the reservoir is named. The rest, abayon the eastern side of the lake is in the parish ofRieste.
Lake environment
[edit]
Four lakes
[edit]The water surface of the Alfsee covers 2.2 km² and its shore is about 7 km long. Its maximum north-south length is 2.88 km. From east to west the lake is up to 330 m across in the south and 1,350 m in the north. It has a capacity of 20 million m³ at a depth of 2 m.
Immediately to the south, where the artificially constructed conduit of the riverHaseflows into the Alfsee lakes, there is a small auxiliary basin (Absetzbecken) in front of the actual reservoir, from which water flows into the lake via a roughly 330 m long overflow dam.
To the east the Alfsee borders on the smallDubbelausee,which is up to 400 m long in an east-west direction and up to 360 m long from north to south and set at a height of37 m abovesea level (NN).
Just to the northeast, as part of as smallnature reservethere is a reserve basin (Reservebecken), which is up to 700 m long from north to south and a maximum of 425 m from east to west.
Head- and tailwaters
[edit]Roughly north of the town of Bramsche an artificial channel branches off theHasethat takes water from the south for about 4.5 km to the lakes of the Alfsee. The water draining from the Alfsee runs over a similar artificial drainage channel, about 1.3 km long, directly west of the reserve basin north of the Alfsee, where it flows along the 2.5 km long canalised lower reaches of theUeffelner Aue,which passes the Alfsee to the west running in a south to north direction west of Alfhausen, before flowing back into the Hase.
History
[edit]Construction on the Alfsee began in 1971. From 1976 a holiday park was built on the eastern shore within the parish ofRieste.Today this has holiday homes, severalcampsitesand sports pitches as well as a boating harbour with asailingschool and awaterskiingarea. As well as holiday makers and water sports enthusiasts, the Alfsee is popular withanglers,particularly because of the presence oftench.
Transport links
[edit]The Alfsee, which is located southeast ofAlfhausena few hundred metres east of theB 68,can be accessed from this federal road and from theNeuenkirchen-Vördenjunction of theA 1 motorwaythat passes it to the east.
The station at Rieste which is served hourly by trains from Bremen and Osnabrück is only about 1,800m from the Alfsee.