Sacrower See

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Sacrower See
Sacrower See 2015.JPG
Sacrower See near Potsdam - view from the northern tip to the southwest.
Geographical location Central Europe , Germany , Brandenburg
Drain SchiffgrabenHavel
Places on the shore Potsdam
Coordinates 52 ° 26 '25 "  N , 13 ° 5' 50"  E Coordinates: 52 ° 26 '25 "  N , 13 ° 5' 50"  E
Sacrower See (Brandenburg)
Sacrower See
Altitude above sea level 29.2  m above sea level NHN
surface 1.07 km²
length 3.2 km
width 250 to 500 mdep1
volume 19,300,000 m³
scope 6.9 km
Maximum depth 36 m
Middle deep 18 m
Catchment area 7.9 km²

The Sacrower See is a lake in Brandenburg in the northern part of the city of Potsdam in the district Sacrow . The lime-rich, stratified flatland lake lies entirely in the “ Sacrower See und Königswaldnature reserve .

Together with the Seeburger Fenn and the Groß Glienicker See , it forms a chain of lakes that lies in a glacial channel , into which the Heilige See, 1.6 kilometers to the south, is also classified. The Sacrower See has no natural above-ground inflow, but is fed by groundwater. The ditch, through which water sporadically flowed from the Groß Glienicker See, has dried up since 1996. The connection via the Schiffgraben to the Havel was closed in 1986 by a dam to prevent a seasonal backflow of the then highly eutrophic Havel water.

The lake extends over 3.2 kilometers in a north-south direction. Its width is a maximum of 500 meters and at the narrowest point 250 meters. The Potsdam district of Sacrow is located on the south-eastern shore of the lake. The other banks are made up of forest, which belongs to the Königswald. The catchment area of ​​the Sacrower See is 7.9 km². 78% of this is covered by forest, 13% is water and 6% is agricultural land.

The Sacrower See is divided into three basins and is up to 36 m deep in its northern part. This makes it one of the five deepest natural lakes in Brandenburg. Between April and November it shows a stable temperature stratification.

The lake, assessed as potentially mesotrophic , was weakly eutrophic in 2009 with a LAWA trophic index of 3.0. The average depth of view was 1.80 m from 1996 to 2000. The sediment consists largely of digested sludge. Both the ecological and the chemical condition of the Sacrower See are rated on a five-point scale with 3 (= "moderate condition"; the environmental target of the WFD is just missed) according to the EU Water Framework Directive .

The reed edge of the lake is only narrow due to the steep banks. The most common floating leaf plant is the yellow pond rose .

The lake has been used intensively for fishing since the 1960s . The annual stocking of whitefish , one of 18 fish species found in the lake, is 500,000 saplings. The yields have declined sharply since the 1970s (20 kg / ha) and were only 3.2 kg / ha at the turn of the millennium.

During the division of Berlin, the lake was part of the border area and was under guard. In 1986, Rainer Liebeke drowned in the body of water while trying to escape from the GDR.

See also

Web links

Commons : Sacrower See  - Collection of pictures, videos and audio files

Individual evidence

  1. a b c d e f g h i j k Kerstin Wöbbecke, Gisela Klett, Bettina Rechenberg: Water quality of the most important lakes in the Federal Republic of Germany. Data collection 1981–2000 (PDF; 16 MB). Federal Environment Agency, Berlin 2003.
  2. a b Britta Lüder, Bernd Zolitschka: Control of palaeolimnological processes through climatic influencing variables (Sacrower See near Potsdam) (PDF; 14 MB). In: Greifswalder Geographische Arbeit 26, 2002, pp. 115–118.
  3. Landscape plan (PDF; 5.4 MB). State capital Potsdam, as of September 19, 2012.
  4. The Groß Glienicker See. On the way to ecological balance (PDF; 6.2 MB). Senate Department for Health, Environment and Health, Berlin 2011, p. 25.
  5. Ecological characterization of the most important breeding areas for waterfowl in Brandenburg (PDF; 12.1 MB, = studies and conference reports of the State Environment Agency Volume 57), State Environment Agency Brandenburg, Potsdam 2008, p. 15.
  6. Profile of the lakes EC Water Framework Directive: Sacrower See . (PDF; 511 kB), State Office for the Environment Brandenburg , Section W14, as of October 10, 2017.
  7. Brigitte Nixdorf, Mike Hemm, Anja Hoffmann, Peggy Richter: Documentation of the condition and development of the most important lakes in Germany. Part 5: Brandenburg (PDF; 1.9 MB). Environmental research plan of the Federal Ministry for the Environment, Nature Conservation and Nuclear Safety, final report, 2003.