]> 2026-04-10T15:45:53+00:00 Case study:Upper Emscher 500 en Approved 0.5 - 2 m 2 - 5 m Removal of concrete banks and bed Opening the river about 2 km Bed raising No Yes No Yes No Awaiting results Yes Fish,No,No,Yes,Yes,No,Awaiting results Invertebrates,Yes,Yes,Yes,Yes,No,Awaiting results Macrophytes,No,Yes,Yes,Yes,No,Awaiting results Angiosperms,No,Yes,Yes,No,No,Awaiting results Fish Invertebrates Macrophytes Angiosperms Yes No Removal of concrete bank protection Adding sinuosity Channel widening Emschergenossenschaft Central Plains Yes No Yes true Yes No No Awaiting results Yes Channel pattern/planform,No,Yes,Yes,No,No,Awaiting results Continuity for organisms,No,Yes,Yes,No,No,Awaiting results Structure & condition of riparian/lake shore zones,No,Yes,Yes,No,No,Awaiting results Substrate conditions,No,Yes,Yes,No,No,Awaiting results Width & depth variation,No,Yes,Yes,No,No,Awaiting results Channel pattern/planform Continuity for organisms Structure & condition of riparian/lake shore zones Substrate conditions Width & depth variation No Bauphase Schueren 2009.jpg restrictedEmscher.jpg ZQEmscher Phoenix.jpg Flood phoenix.JPG viewtowardslake.JPG Upper Emscher in Dortmund Schüren during construction Upper Emscher with lots of restrictions on both sides <i>Typha</i>-reeds as seen during normal water levels 16 m³ discharge, nearly flooding the detention basin View towards the detention basin phoenix-lake Yes 51.495441456286,7.5426807402255 EGLV Mechthild Emschergenossenschaft Semrau Removal of concrete banks and bed, Opening the river about 2 km, Bed raising,,Increase water retention area, Connection to wider floodplain, Wetland habitat,Removal of concrete bank protection, Adding sinuosity, Channel widening, ,,Information for the public, New bicycle path, 13157 Yes No No Awaiting results Yes Temperature,No,Yes,Yes,Yes,No,Awaiting results Nutrient concentrations,No,Yes,Yes,Yes,No,Awaiting results Oxygen balance,No,Yes,Yes,Yes,No,Awaiting results PH,No,Yes,Yes,Yes,No,Awaiting results Salinity,No,Yes,Yes,Yes,No,Awaiting results Temperature Nutrient concentrations Oxygen balance PH Salinity Yes Emscher Holzwickede.jpg 1993-01-01Z 2448988.5 Complete Part of the integrated river basin management for the Emscher Region (865 km², 2.700 inhabitants/ km²) is the revitalization of the river Emscher and its tributaries. Due to industrialization the water bodies were systematically developed as open wastewater sewers in the beginning of the 20^th century. Economic and technical alternatives such as closed sewer systems could not be implemented due to constant subsidence caused by coal mining. Momentarily, the river system is being restructured in order to enable the Emscher to once again be a fully functioning, continuous water-based ecosystem with typical topology and vegetation. An ecological concept based on the assumption of a non-interrupted river as a connection from the source to the mouth has been developed. Studies on the feasibility of restructuring the Emscher show, that due to coal mining, industrial impacts and population changes the “original” conditions can never be reached again. It will not be possible to return the Emscher to its original, meandering state. Therefore, the reference conditions are no direct goals for the river restoration, but they give orientation in the planning procedure. The upper Emscher is a small river, in parts still a creek of a little more than 12 km in length. Its source is located in a small forest south of Dortmund. Flowing northwards the restored waterbody passes fields, shrubs and several towns/quarters of Dortmund as well as smaller industrial parks. Due to the many restrictions by buildings or infrastructure several box-culverts with natural substrates had to be built. The longest in Dortmund-Aplerbeck has a length of 120 m. Since there was hardly any space at all, the culvert and the sewage pipes were constructed more or less simultaneously, placing the culvert on top of the pipes. Several flood water detention basins have been constructed along the watercourse. The biggest of which, the " [http://www.dortmund.de/en/leisure_and_culture/phoenix_see_1/index.html Phoenix-See] " (Phoenix-Lake), is mostly used as recreation area. Bicycle and pedestrian paths as well as a harbour for sailing boats have been placed in and around the Lake. Because of the restrictions the Emscher is usually not meandering, but mostly in a more or less woven bed which has been sharply incised during the beginning of the 20^th century. Except for the part parallel to the Phoenix-Lake and the many urban areas restricting the width and natural dynamics, natural succession can be allowed (sometimes only in the meadow, not on the slopes), thus creating different habitats of alder forest, <i>Typha</i> and <i>Carex</i> reeds, sedge, floodgrass and <i>Potamogeton</i> in the compensatory floodplain. Upper Emscher upper emscher Yes Rhine Rhine Increase water retention area Connection to wider floodplain Wetland habitat Emscher emscher Upper Emscher section upper emscher section Information for the public New bicycle path 865 Emscher DE_NRW_2772 Habitat and biodiversity Hydromorphology Type 18: small loess-loam dominated lowland river DE_NRW_2772_64190 Emscher 2013-12-31Z 2456657.5 2014-05-15T10:06:46Z 2456792.9213657 2019-01-02T15:13:43Z 2458486.1345255 Upper Emscher 500 1 plainlist 5 [[Category:Case study]] [[Project title::!Upper Emscher]] [[Subcatchment title::Emscher]] Upper Emscher# QUERYaa8c0823b4a6c616412812bcf2d0e8f2