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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Lessons learnt

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Catchment and subcatchment

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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

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WFD water body name
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Reference morphology
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Heavily modified water body
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Dominant substrate
River corridor land use
Average bankfull channel width category
Average bankfull channel width (m)
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Average bankfull channel depth (m)
Mean discharge category
Mean annual discharge (m3/s)
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Average channel gradient
Average unit stream power (W/m2)

Project background

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Cost for project phases

Phase	cost category	cost exact (k€)	Lead organisation	Contact forename	Contact surname
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Reasons for river restoration

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Mitigation of a pressure
Hydromorphology	Channel pattern/planform, Quantity & dynamics of flow
Biology	Fish, Invertebrates
Physico-chemical
Other reasons for the project	meeting WFD aims

Measures

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Structural measures
Bank/bed modifications
Floodplain / River corridor
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Monitoring

Hydromorphological quality elements

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quality elements

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quality elements

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quality elements

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Any other monitoring, e.g. social, economic

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Monitoring documents

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Supplementary Information

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