Kiehnsee

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Kiehnsee
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Geographical location Angermünde municipality , Uckermark district , Brandenburg , Germany
Tributaries no
Drain no
Islands no
Places on the shore no
Location close to the shore Steinhöfel , Neuhaus , Poratz
Data
Coordinates 53 ° 4 '6 "  N , 13 ° 49' 26"  E Coordinates: 53 ° 4 '6 "  N , 13 ° 49' 26"  E
Kiehnsee (Brandenburg)
Kiehnsee
Altitude above sea level 58  m
surface 6.7 ha
length 450 m
width 115 m
Maximum depth 4.5 m
Template: Infobox Lake / Maintenance / EVIDENCE AREA Template: Infobox Lake / Maintenance / EVIDENCE LAKE WIDTH Template: Infobox Lake / Maintenance / EVIDENCE MAX DEPTH
The Kiehnsee ( Kühnsee ) on the Urmes table sheet 2948 from 1826

The Kiehnsee is a natural lake in the district of Steinhöfel , a district of the city of Angermünde in the district of Uckermark (Brandenburg). It is a groundwater flow-through lake with no inflow or outflow and the lake level fluctuates strongly.

location

The Kiehnsee is just under one kilometer south-southwest of Neuhaus , about 2.2 km east-northeast of Poratz . The Redersnwalde residential area is located about 2.7 km southeast and the Luisenthal residential area about 2.5 km east-northeast . To the northwest lies the Laagensee , southwest the Briesensee and to the east lie Warnitzsee and Schönebergsee . The lake is completely surrounded by forest in the Poratzer Morain Landscape Nature Reserve.

Hydrology and ecology

The Kiehnsee is a groundwater flow-through lake and has no inflow and / or outflow. It is 6.7 hectares in size, about 450 meters long and a maximum of 115 meters wide. The greatest depth is about 4.5 m, but fluctuates according to the lake level. The lake level is about 58  m above sea level. NHN , but it fluctuates strongly and tends to decrease. The Kiehnsee is morphologically a boiler lake in which water from the Briesensee basin presses into the Kiehnsee when the groundwater levels are high. In the neighboring lakes Briesensee and Warnitzsee , also groundwater throughflow lakes , lake level fluctuations of up to three meters have been recorded in the last 40 years. The trophic index in the investigation years 1992/94 was 2.8 (0 eutrophic, but rather at the lower limit of mesotrophic). The water body is not stratified.

Until a few years ago, the eutrophic clear water lake was dominated by rough horn leaf ( Ceratophyllum demersum ), whorled thousand leaf ( Myriophyllum verticillatum ) and middle mermaid ( Najas marina var. Intermedia (Wolfg. Ex Gorski) Rendle). Until the beginning of the 2000s, the bottom of the lake was still populated by fine candy algae ( Chara delicatula ). During an investigation of the lake in 2014, the complete loss of the underwater plants was found.

Between the Briesensee and the Kiehnsee there is still the blue-green Schillergras ( Koeleria glauca ) in open areas of the pine forests . Another special was in the area between Friedrichsfelde the Kiehnsee and moor frog ( Rana arvalis ) found. The Kiehnsee is no longer managed.

history

The name is from brb. Kien = pine derived. It could be the lake that was named Motzsee in 1375 in connection with the later deserted village of Schöneberg , next to Warnitzsee and Schönebergsee. In the Urmes table sheet No. 2948 Friedrichsfelde from 1826 it appears as Kühnsee.

literature

  • Olaf Mietz (project manager): The lakes in Brandenburg's young moraine region. Part 2, Water cadastre and applied water ecology eV, LUA, Public Relations Department, Potsdam 1996, DNB 948923989 .

Individual evidence

  1. ↑ a b Natura 2000 management plan in the state of Brandenburg Management plan for the FFH area Poratzer Morain Landscape State internal no. 140, EU no. DE 2948-304. State Office for the Environment of Brandenburg, 2019 PDF ; 9.1 MB.
  2. ↑ Martin Theuerkauf, Mathias Küster, Knut Kaiser: Fluctuating lake levels in humid climates: a suitable proxy of past precipitation. Geophysical Research Abstracts, 18: EGU2016-13849. EGU General Assembly 2016 ResearchGate
  3. ↑ Reinhard E. Fischer (co-authors: Elzbieta Foster, Klaus Müller, Gerhard Schlimpert, Sophie Wauer & Cornelia Willich): Brandenburgisches Namenbuch. Part 10: The names of the waters of Brandenburg. Verlag Hermann Böhlaus Successor, Weimar 1996, ISBN 3-7400-1001-0 , p. 135.
  4. ↑ Lieselott Enders : Historical local dictionary for Brandenburg. Part VIII: Uckermark. Hermann Böhlaus successor, Weimar 1986, p. 880/81.

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