Schwenowseegraben
| Schwenowseegraben | ||
 The Schwenowseegraben north of the Reichardtsluchs , April 2015 |
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| Data | ||
| Water code | DE : 58271384 | |
| location | Brandenburg , Germany | |
| River system | Spree | |
| Drain over | Blabbergraben → Spree → Havel → Elbe → North Sea | |
| source | In the district of Behrensdorf east of the village center (part of the municipality of Rietz-Neuendorf ) 52 ° 11 ′ 2 ″ N , 14 ° 3 ′ 44 ″ E |
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| Source height | approx. 63 m above sea level NHN | |
| muzzle |
Drobschsee coordinates: 52 ° 8 '2 " N , 14 ° 3' 3" E 52 ° 8 '2 " N , 14 ° 3' 3" E |
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| Mouth height | approx. 44 m above sea level NHN | |
| Height difference | approx. 19 m | |
| Bottom slope | approx. 2.4 ‰ | |
| length | around 7.9 km | |
| Flowing lakes | Reichardtsluch , Schwenowsee | |
| Small towns | Storkow ( Limsdorf district and Schwenow district ) | |
| Communities | Rietz-Neuendorf | |
The Schwenowseegraben is a nearly eight kilometers long river in the Brandenburg district of Oder-Spree . It rises near Behrensdorf and flows on the Beeskower Platte in a postglacial channel to the south into the Drobschsee , which drains over the Blabbergraben into the Krumme Spree .
Partly straightened and piped for road underpasses, the ditch lay largely dry in the 2010s and can hardly be seen in the landscape in parts. A longer water-bearing part is located in the area of the protected Reichardtsluchs , which the ditch flows through. The Elbe river basin community rates its ecological condition as "unsatisfactory". As part of the “Krumme Spree water development concept” (GEK), the stream is to be dismantled as naturally as possible and its continuity restored in accordance with the EU Water Framework Directive (WFD).
Location and natural space
The Schwenowseegraben is located in the southwestern part of the Beeskower Platte , which is listed as No. 824 in the natural spatial main units of Germany in the main unit group No. 82 East Brandenburg Heath and Lake Area . The flat, undulating plateau is predominantly a floor moraine from the Saale Ice Age , the surface shape of which was formed by renewed glaciation in the last Ice Age . The Schwenowseegraben runs between the southern part of the Scharmützelsee-Glubigseen-Rinne , which borders the Beeskower Platte to the west, and the Blabbergraben in the east. Its source area lies roughly between the Großer Glubigsee in the west and the Lindenberger See in the east.
course
The source area of the Schwenowseegraben lies in an open , arable cultural landscape east of Behrensdorf , a district of the municipality of Rietz-Neuendorf . Shortly after it began, it crossed state road 422 in a pipe penetration , which connects Behrensdorf with the community neighbor Ahrensdorf . On the road he enters the Dahme-Heideseen Nature Park , where he remains for the rest of the way. On his way south he reaches a small forest area, now in the western district of Ahrensdorf, in which he swings west and in which his track is temporarily lost according to the representation of the Brandenburg viewer of the state survey and geographic base information Brandenburg . After around one hundred meters, the ditch becomes visible again, turns south again and forms the border between open land and individual forest edges between Ahrensdorf and the Limsdorf district of the city of Storkow . Shortly before the state road 42 , which connects Limsdorf and Ahrensdorf and which it in turn crosses under pipes, it reaches the FFH and Natura 2000 area Schwenower Forest supplement in Limsdorf .
The area was in the 2010s due to its representative regional focus of occurrence of by Annex II of the Habitats Directive "strictly protected" species crested newt ( Triturus cristatus ) and fire-bellied toad ( Bombina bombina provided) under protection. On 29 hectares, it comprises the woody, loamy-sandy land habitats and winter quarters of the amphibians around the two hectare Reichardtsluch . The Luch consists of two small shallow lakes with strong seasonal water level dynamics, through which the Schwenowseegraben flows from north to south. After exiting the lynx lakes, the brook flows in an extensive forest area to the southeast and reaches the district of Schwenow , a part of the municipality of Storkow, which belongs to Limsdorf as a residential area. Around the level of the blabber sheep farm to the east, the direction of flow changes to the south or slightly southwest. North of Schwenow it reaches the 746 hectare FFH and nature reserve Schwenower Forest . Past the village of Schwenow, which he leaves to the west, the Schwenowseegraben flows into the northern tip of the eponymous Schwenowsee . It leaves the lake around the lower east bank towards the east and, after its last 280 meter long section, now on the boundary of the diving district of Görsdorf , flows into the southern bay of Drobschsee , which is under the name Drobschseerinne as a nature development area (previously: total reserve ) under special protection and is marked as Zone 1 within the Schwenower Forest nature reserve .
ecology
Anthropogenic pressures and ecological status
According to the Elbe River Basin Community (FGG Elbe), there are significant anthropogenic sources of pollution for the Schwenowseegraben in agricultural activities (through infiltration , erosion , discharge, drainage , changes in management or afforestation ), leaching of materials and structures in areas without sewers , rainwater discharge and others - unspecified - "diffuse sources". The FGG rates the ecological status or the ecological potential of the water body as “unsatisfactory” (“4” on a five-point scale). The chemical status according to the Surface Water Ordinance (OGewV) has not been classified. The FGG indicates the determination reliability of the ecological assessment as "medium", which means that the "assessment results are not yet available for all procedures for the relevant quality components that are in conformity with the WFD and recognized by LAWA ." See the impact of the pollution on the water body the FGG in nutrient enrichment ( eutrophication ), pollution and habitat changes due to hydromorphological changes.
For the Schwenowseegraben - as for other bodies of water in its area of responsibility - the FGG adopted the exception rule for the extension of deadlines according to Art. 4 Para. 4 WFD or less stringent environmental goals according to Art. 4 in the “Draft of the update of the management plan [...]” from 2014 Paragraph 5 of the WFD. The FGG justifies the application for the Schwenowseegraben with the "mandatory technical sequence of measures" and with the "temporal effect of measures already initiated or planned". The regional community, which was founded by ten German states , wants to complete the full implementation of the WFD targets by reducing the pollution of the brook by 2027 at the latest if the deadline is extended.
Part of the Krumme Spree water development concept
The "Water Development Concept (GEK) Krumme Spree" is an essential part of improving the ecological condition of the stream. On an area of 26,924 hectares, it encompasses a 99.5-kilometer network of waterways , consisting of the Krumme Spree, three lakes ( Groß Leuthener See , Kossenblatter See , Neuendorfer See ) and seven ditches and streams flowing into the Spree, including the Schwenowseegraben. The concept for the near-natural development of rivers provides within the framework of the WFD that the water “become cleaner, closer to nature and more species-rich again. [...] The focus of the planning is on measures to improve the water structure and ecological continuity. ”The concept emphasizes their ecological quality as a decisive criterion when assessing the water bodies . The limnological concept is being developed by private planning offices on behalf of the Brandenburg State Environment Agency and accompanied and coordinated by the Cottbus Division RS5 - Water Management , Hydrology , Flood Protection. A project-accompanying working group (PAG) made up of offices, municipalities and associations is also involved in the development.
literature
- Frank Schröder: What creeps and flies in the Reichards-Luch? In: Jahre Buch 2008 . Ed .: NABU RV Dahmeland e. V. and Nature Park Dahme-Heideseen (State Office for Environment, Health and Consumer Protection Brandenburg), Prieros, pp. 109–111 PDF .
- Hans Sonnenberg: About padders and adders. What do we know about the amphibians and reptiles in Dahmeland? In: Jahre Buch 2014 . Ed .: NABU RV Dahmeland e. V. and Dahme-Heideseen Nature Park (State Office for Environment, Health and Consumer Protection Brandenburg), Prieros, pp. 116–126 PDF .
Web links
Individual evidence
- ↑ a b c d e Land surveying and geographic base information Brandenburg : Brandenburg viewer, digital topographic maps 1: 10,000 (Menu - "More data" - click and select accordingly; switch on "Real estate cadastre" for the district boundaries and then "Landmarks".)
- ^ Landesumweltamt Brandenburg (LUGV): River directory, source data set gewnet25 Version 4.0 . As of April 25, 2014, p. 42.
- ↑ Olaf Juschus: The young moraine south of Berlin - investigations into the young Quaternary landscape development between Unterspreewald and Nuthe. S. 2. Dissertation, Humboldt University Berlin, 2001. Also in: Berliner Geographische Arbeit 95. ISBN 3-9806807-2-X , Berlin 2003. See Figure 2 Plates and glacial valleys in the young moraine south of Berlin in Chapter 1 and Chapter 4 Fig. 32 and subsections 4.3.4.3 and 4.3.4.5 .
- ↑ a b Federal Agency for Nature Conservation (BfN): Map service for protected areas in Germany. Dive section (scroll back and forth for the respective protected areas and select the settings in the level overview depending on the type of protected area you are looking for).
- ↑ Frank Schröder: What creeps and flies in the Reichards-Luch? [...] p. 109.
- ↑ Hans Sonnenberg: From paddles and snakes. What do we know about the amphibians and reptiles in Dahmeland? [...] p. 120.
- ↑ 3850-301 Schwenower Forest. (FFH area) Profiles of the Natura 2000 areas. Published by the Federal Agency for Nature Conservation . Retrieved November 25, 2017.
- ↑ Brandenburg rules System (BRAVORS): Minister of Agriculture, Environmental Protection and Raumordnung.Verordnung over the nature reserve "Schwenower forestry". Potsdam, September 8, 2004. Entry into force of the regulation on October 9, 2004
- ↑ Elbe river basin community (ed.): Draft of the update of the management plan according to § 83 WHG or Article 13 of Directive 2000/60 / EC for the German part of the Elbe river basin district for the period from 2016 to 2021. Appendix 5-2: List of Surface water bodies with information on pressures, status, effects of pressures and the achievement of management objectives. ( Memento of the original from April 2, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Magdeburg 2014 20. (For the explanatory legend to the list on this page attachments open and Annex A5-0 Legend overview and explanations select or download .)
- ↑ a b Brandenburg State Environment Agency: EU Water Framework Directive (WFD). Water development concept (GEK) Krumme Spree. ( Memento of the original from August 8, 2014 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Flyer, Potsdam 2010.
- ↑ State Office for Environment, Health and Consumer Protection Brandenburg, Regional Department South, Section RS 5: Interpretation of the draft of the action plan for the water development concept "Krumme Spree". ( Memento of the original from April 2, 2015 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. Cottbus, March 22, 2011. In: Official Gazette of the City of Storkow (Mark). 14. Vol. 4, April 21, 2011, p. 2.
