Großensee (lake)

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Großensee
Großensee.JPG
The lake from the northern bathing area
Geographical location Southern Stormarn District , Schleswig-Holstein , Germany
Tributaries predominantly groundwater sources; insignificant stream tributaries
Drain north: artificial piercing to Stenzenbek → Mönchteich → Stenzerteich → (Trittauer) Mühlenbach → Bille → Elbe

south: Kranbergbek → Corbek → Bille → Elbe

Places on the shore Großensee, Lütjensee
Location close to the shore Hamburg
Data
Coordinates 53 ° 37 '28 "  N , 10 ° 21' 0"  E Coordinates: 53 ° 37 '28 "  N , 10 ° 21' 0"  E
Großensee (lake) (Schleswig-Holstein)
Großensee (lake)
Altitude above sea level 38.48  m above sea level NN
surface 73 ha
volume 6,817,000 m³
scope 6.2 km
Maximum depth 16.4 m
Middle deep 9.34 m
Catchment area 8.28 km²

The Großensee is a body of water located in the Stormarn district ( Schleswig-Holstein ) between the municipalities of Großensee (Holstein) and Lütjensee , which naturally belongs to the so-called Stormarn Switzerland.

description

The lake is located in southern Stormarn (Schleswig-Holstein) about 10 km east of Hamburg in an ice age depression and has been owned by the Free and Hanseatic City of Hamburg since the 1920s. It is one of the glacial channel lakes that formed during the Vistula Ice Age mainly through meltwater erosion under the ice. Its size is 0.73 km², its shoreline 6.2 km. The responsible state ministry specifies the greatest depth as 16.4 m, the average depth as 9.3 m, but in older literature 21.0 m and 12.0 m respectively. In the southern half of the lake there is a 0.7 hectare wooded island.

The Großensee is mainly fed by groundwater sources and has only a few, insignificant stream inflows. Its catchment area above ground is 8.28 km². The lake was originally drained at the southern tip via the Kranbergbek to the Corbek and on to the Bille. In connection with the earlier drinking water production, the level of this runoff was increased. In addition, to the north in the Schleushörn area, an artificial passage to the Stenzenbek was created, which was structurally regulated in the 1990s. Today this is the main drain and drains freely via the Mönch (s) pond and Stenzerteich to the (Trittauer) Mühlenbach, on to the Bille and Elbe . Only when the water level is high does water flow over the Kranbergbek. A two-year water level measurement of the lake showed a fluctuation range of 40 cm.

The water body is poor in lime and nutrients and has an unusually diverse vegetation with numerous endangered underwater plants (e.g. the beach lingon ( Littorella uniflora ) or the floating frogweed ( Luronium natans )). The water quality is rated as good to very good. The Großensee is leased by the Sport Angler Association Hamburg eV and is stocked with pike , tench and carp . In addition, a stock of vendace ( Coregonus lavaretus ) has been targeted for a number of years .

The shore of the lake is only partially accessible, as there is partly a development with private houses, partly an agricultural and water management use. At the southern end of the lake there is a public bathing establishment and two restaurants, and there is a free beach on the northern shore of the lake. However, it is possible to hike along the eastern shore of the lake from the south beach in Großensee to the north beach in Lütjensee. In some places, the trail deviates from the lake shore due to private land.

Others

The Großensee has served the Wandsbeker since 1892 , and since 1928 also the Hamburg water supply (today " Hamburg Wasser "). A 6 km long circular route, some of which is far from the bank, is used by walkers and runners. The north beach became ingloriously known on Ascension Day 2004 through the so-called beer crate race , which also led to larger preventive police operations in the following years.

See also

literature

  • U. Muuß et al .: The inland waters of Schleswig-Holstein , Neumünster 1973
  • Topographic map 1: 25000 (2328 Trittau)

Web links

Individual evidence

  1. ↑ a b c d e f Großensee: Characteristic data . In: Ministry for Energy Transition, Agriculture, Environment and Rural Areas Schleswig-Holstein: Lakes (accessed November 25, 2016)
  2. ↑ http://www.hamburg.de/geolog-objekte-start/146850/084-grossensee-text.html
  3. ↑ Schleswig-Holstein environmental data
  4. ^ Baden in Schleswig-Holstein
  5. ↑ http://www.sav-hamburg.de/artikel/?c=grossensee
  6. ↑ Großensee waterworks on the Hamburg Wasser website ( memento of the original from November 26, 2016 in the Internet Archive ) Info: The archive link was automatically inserted and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. (accessed November 25, 2016) @1@ 2Template: Webachiv / IABot / www.hamburgwasser.de
  7. ^ Wandsbek local history museum: Pressure pumps at the Großensee
  8. ^ Jens Peter Meier: Alcohol ban on the Großensee . In: Hamburger Abendblatt . April 28, 2005 ( online, for a fee [accessed March 15, 2013]).