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
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encompassing the following
projects
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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.

Monitoring surveys and results

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Lessons learnt

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Catchment and 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

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

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

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


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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

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

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative


Monitoring documents



Additional documents and videos


Additional links and references

Link Description

Supplementary Information

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