Case study:Seseke Remodelling

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Location: 51° 35' 12.60" N, 7° 42' 47.92" E

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Project overview

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Status	Complete
Project web site
Themes	Habitat and biodiversity, Hydromorphology
Country	Germany
Main contact forename	Mechthild
Main contact surname	Semrau
Main contact user ID	User:EGLV
Contact organisation	Lippeverband
Contact organisation web site	http://eglv.de
Partner organisations
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Project summary

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Part of the integrated river basin management for the Seseke Region (315 km²) is the revitalization of the river Seseke and its tributaries. Due to industrialization the waterbodies were systematically developed as open wastewater sewers at 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 mining. The river system will be restructured, so that the Seseke will become a fully functioning, continous water-based ecosystem with typical topologies and vegetation. Studies on the feasibility of restructuring the Seseke show, that due to coal mining, industrial and population changes the “original” conditions can never be reached again. It will not be possible to return the Seseke to its original, meandering state. So the reference conditions are no direct goals for the river restoration, but they give orientation in the planning procedure.

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Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body National/international site designation Local/regional site designations Protected species present Invasive species present Species of interest Dominant hydrology Dominant substrate River corridor land use Average bankfull channel width category Average bankfull channel width (m) Average bankfull channel depth category Average bankfull channel depth (m) Mean discharge category Mean annual discharge (m3/s) Average channel gradient category Average channel gradient Average unit stream power (W/m2) Project background Edit project background Reach length directly affected (m) Project started Works started Works completed Project completed Total cost category Total cost (k€) Benefit to cost ratio Funding sources Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design Stakeholder engagement and communication Works and works supervision Post-project management and maintenance Monitoring Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit Physico-chemical quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Any other monitoring, e.g. social, economic Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information