Case study:Upper Main catchment restoration

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Location: 50° 1' 5.79" N, 10° 54' 51.23" E

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Project overview

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Status	Complete
Project web site
Themes	Fisheries, Habitat and biodiversity, Hydromorphology
Country	Germany
Main contact forename	Nick
Main contact surname	Elbourne
Main contact user ID
Contact organisation	River Restoration Centre
Contact organisation web site
Partner organisations
Parent multi-site project
This is a parent project encompassing the following projects	No

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Project summary

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The Regional Water Authority Kronach was responsible for restoration measures undertaken. Starting in 1990, areas along the river were purchased in preparation for future restoration plans. Bank paving was removed and channel width increased to allow for the formation of highly diverse marginal habitats such as gravel bars and backwater areas. This also included reconnection of historic meanders, creation of multi-thread channels and increasing connectivity to floodplains. Overall a great increase was seen in geomorphological diversity and habitat potential. Between 1992 and 2008 the total length of restored sections reached 18km, and a floodplain area of 120ha. The reasons for the particular success of this project are that restoration was not constrained by the usual site or catchment scale problems centred around land use and in usual difficulty in re-connecting flood plain and backwater areas due to land ownership.

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Rhine River basin Rhine Subcatchment River name Rhine Area category 1000 - 10000 km² Area (km2) Maximum altitude category 1000 - 2000 m Maximum altitude (m) Dominant geology Siliceous Ecoregion Central Plains Dominant land cover Grassland, Urban Waterbody ID Other case studies in this subcatchment: Amerongse Bovenpolder, Bakenhof Dyke reconstruction, Blauwe Kamer, Room for the River, Ruppoldingen 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 Channel pattern/planform, Quantity & dynamics of flow Biology Fish, Invertebrates 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