Caputher See

Caputher See
Geographical location	Potsdam-Mittelmark district
Tributaries	Flow from the Großer Lienewitzsee (temporary)
Drain	to the Havel
Places on the shore	Caputh
	Data
Coordinates	52 ° 20 '20 " N , 12 ° 59' 49" E Coordinates: 52 ° 20 '20 " N , 12 ° 59' 49" E
Altitude above sea level	30.6 m above sea level NHN
surface	48.12 ha
length	1.142 km
width	759 m
volume	1,490,000 m³
Maximum depth	8 m
Middle deep	3.1 m

The Caputher See is a lake in the Potsdam-Mittelmark district in the state of Brandenburg . It is about 48 hectares and 1.142 kilometers long. Its widest point is 759 meters. The lake is located in the municipality of Schwielowsee . The owner is the federally owned Bodenverwertungs- und -verwaltungs GmbH. Two thirds of the Caputher See is part of a nature reserve.

geography

The Caputher See lies south of the Havel and is touched on its north and west by the village of Caputh . The village is also the namesake for the lake. A former drainage ditch from the Lienewitzsee into the Caputher See has dried up due to the lowered groundwater level . In the north, the lake has a ditch-like connection to the Havel, which has now also dried out (2018).

geology

The Caputher See lies in a weaker ice age channel that was formed about 19,000 years ago during the course of the Vistula high glacial .

Hydromorphology

Water depths and stratification

The average water depth of the lake is 3.1 meters, and the deepest point is given as eight meters. The lake is rich in nutrients. Its natural trophy is estimated to be weakly eutrophic, but the lake has been heavily eutrophied for decades. In the 1990s, his LAWA trophy index was 3.7 (weakly polytrophic), but in 2009 and 2012 it was only 3.1 (strongly eutrophic). In terms of type, it is a lime-rich, stratified lake with a relatively large catchment area and the stratification of the water in different temperature or convection levels. The lake is highly enriched with phosphate and nitrogen compounds that promote algae growth. The depth of view fluctuates greatly and, due to the high proportion of phytoplankton , averages one meter.

Lake bottom

The bottom of the lake is sandy to coarse gravel.

Bank area and plants

The eastern, gently sloping bank is lined with a belt of reeds. On the south bank there is a wide belt of reeds with dense cattails and rush vegetation (Cladium mariscus). There is a hiking trail around the lake. In many areas, especially on the west bank, the immediate bank area is lined with old trees such as oaks and alders.

Wildlife

Due to the shallow water depth in the southern bank area and the existing belt of reeds, there are sufficient spawning zones in the lake. The lake is described as rich in fish, but unbalanced. There are found all the important Central European species of fish in the lake, such as bream (sea bream), roach , rudd , tench , bream , perch , pike-perch , pike , catfish and eels . Stocking with non-native species such as silver and marble carp disrupts the natural food chain. These fish were originally supposed to get rid of the algae, but they pollute the water by bringing in faeces. The pond frog should be mentioned as the main representative of the amphibian. Grass snakes are common. The most common waterfowl are Bless Coot and grebes found.

Web links

Commons : Caputher See - Collection of images, videos and audio files

Press report Potsdam Latest News from August 9, 2010 ( Memento from August 9, 2010 in the Internet Archive )

Individual evidence

↑ Topographic map for the 18th Conservation Target Ordinance, page 29 of 52 (PDF; 1.15 MB). State of Brandenburg, Ministry for Rural Development, Environment and Agriculture, scale 1: 10,000, February 27, 2018, accessed on October 30, 2018.
↑ lakes directory seen25 (version 4.2, November 7, 2016) of Brandenburg called the Ministry of Rural Development, Environment and Agriculture, on 30 October 2018th
↑ ^a ^b ^c Monitoring for the indication of the trophic status according to the EU WFD in 4 lakes in the state of Brandenburg (PDF; 5.75 MB). State Office for the Environment, Health and Consumer Protection Brandenburg, reference number S3-VG-12-020, February 2013.
↑ Information on the lake situation
↑ Landscape framework plan Potsdam-Mittelmark , Volume 2: Inventory and evaluation (PDF; 1.74 MB). Potsdam-Mittelmark district, Nature Conservation Service, 2006, p. 117.

[1] Topographic map for the 18th Conservation Target Ordinance, page 29 of 52 (PDF; 1.15 MB). State of Brandenburg, Ministry for Rural Development, Environment and Agriculture, scale 1: 10,000, February 27, 2018, accessed on October 30, 2018.

[2] s directory seen25 (version 4.2, November 7, 2016) of Brandenburg called the Ministry of Rural Development, Environment and Agriculture, on 30 October 2018th

[Monitoring-3] Monitoring for the indication of the trophic status according to the EU WFD in 4 lakes in the state of Brandenburg (PDF; 5.75 MB). State Office for the Environment, Health and Consumer Protection Brandenburg, reference number S3-VG-12-020, February 2013.

[4] Information on the lake situation

[5] Landscape framework plan Potsdam-Mittelmark , Volume 2: Inventory and evaluation (PDF; 1.74 MB). Potsdam-Mittelmark district, Nature Conservation Service, 2006, p. 117.