Case study:Nine Chalk Rivers Project - Mun Catchment

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Location: 52° 53' 24.39" N, 1° 23' 51.29" E

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Project overview

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Status	In progress
Project web site
Themes	Habitat and biodiversity, Water quality
Country	England
Main contact forename	Jonah
Main contact surname	Tosney
Main contact user ID
Contact organisation	Norfolk Rivers Trust
Contact organisation web site	http://www.norfolkriverstrust.org/
Partner organisations	Environment Agency, Natural England, The Universi-ty of East Anglia, Norfolk Wildlife Trust, Norfolk Coast AONB, RSPB, The Wild Trout Trust, The River Glaven Conservation Group
This is a parent project encompassing the following projects

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Project summary

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The Nine Chalk Rivers project is a series of 16 restoration projects spread across nine unique chalk rivers flowing onto Norfolk’s north coast. The rivers face similar problems, most notably canalisation, disconnection from the floodplain, siltation, low flows and diffuse pollution. The projects are diverse, and include re-meandering, floodplain re-connection, silt and nutrient trapping and catchment management planning. Each project will improve the ecological health of the rivers and floodplains. To deliver these projects, Norfolk Rivers Trust is working with landowners across Norfolk as well as the Environment Agency, Natural England, The University of East Anglia, Norfolk Wildlife Trust, Norfolk Coast AONB, RSPB, The Wild Trout Trust, The River Glaven Conservation Group and various other partners.

The outcomes of the project are the following:improving water quality and river and floodplain habitats.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

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Site

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Name	Mun Catchment
WFD water body codes
WFD (national) typology
WFD water body name
Pre-project morphology
Reference morphology	Actively meandering
Desired post project morphology
Heavily modified water body	No
National/international site designation
Local/regional site designations
Protected species present	No
Invasive species present	No
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

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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	Catchment Restoration Funds

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

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Mitigation of a pressure	Pollution incident, canallisation, disconnection from the floodplain, siltation, low flows
Hydromorphology
Biology	Fish, Macrophytes, Invertebrates
Physico-chemical	Nutrient concentrations
Other reasons for the project

Measures

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Structural measures
Bank/bed modifications
Floodplain / River corridor	Reconnection to the riparian zone, remeandering
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other	Community Involvement – Norfolk Rivers Trust is involving communities in catchment management planning and project delivery through local conservation groups, community councils and stakeholder workshops.

Monitoring

Hydromorphological quality elements

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quality elements

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

Biological quality elements

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quality elements

Element	When monitored		Type of monitoring		Control site used	Result
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Physico-chemical quality elements

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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

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

Monitoring documents

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Image gallery

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The location of Mun River

Additional documents and videos

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Additional links and references

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Link	Description

Supplementary Information

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