Case study:The Pentney Restoration Project

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Location: 52° 40' 55.56" N, 0° 30' 7.80" E

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Project overview

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Status	Complete
Project web site	http://www.norfolkriverstrust.org/trust_project/river-nar-pentney/
Themes	Habitat and biodiversity, Hydromorphology
Country	England
Main contact forename	the
Main contact surname	RRC
Main contact user ID	User:JoshRRC
Contact organisation
Contact organisation web site	http://www.norfolkriverstrust.org/trust project/river-nar-pentney/
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 River Nar has been historically modified for human use, changing its channel size and shape, and in places the river’s course. These changes have negatively impacted on the wildlife of the river. The River Nar below Narborough is heavily modified flowing between steep flood banks, with little in stream character. The proposed project, which runs from Pentney Abbey to Blackborough End (see map), looks at improving habitat diversity and wildlife. Project aims to improve:

The channel morphology,the flow regime, fish spawning habitat, fish & invertebrate habitat, aquatic and riparian plant habitat.

The project is currently going through the design and consultation process. Expected delivery in autumn/winter 2014.

Monitoring surveys and results

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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