Case study:Pow Burn Restoration Project

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Location: 56° 41' 27.23" N, 2° 35' 53.13" W

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Project overview

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Status	Complete
Project web site
Themes	Fisheries, Flood risk management, Habitat and biodiversity, Hydromorphology, Land use management - agriculture
Country	Scotland
Main contact forename	Charlie
Main contact surname	Perfect
Main contact user ID	User:Charlie
Contact organisation	SEPA
Contact organisation web site	http://https://www.sepa.org.uk/environment/water/water-environment-fund/
Partner organisations	Esk Rivers and Fisheries Trust
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 project aimed to restore natural processes along the Pow Burn between Farnell and Powmouth. The river had been straightened and extensively dredged. Arable land use encroached extensively on the river corridor. Restoration measures included 1) Restoration of an inset riparian corridor by moving back embankments and creating a multi stage channel with the aim of encouraging frequent out of channel flow supporting natural riparian habitats 2) Installation of flow deflectors to create hydraulic diversity driving geomorphic adjustment of the channel form. 3) Excavation of backwater channels and flood relief channels to take pressure off the main channel and increase ecological interactions between the river and riparian zones. The project was led by the Esk Rivers and Fisheries Trust (ERFT) and funded by the SEPA Water Environment Fund (WEF)

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Image gallery

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Pre-restoration location B showing straight incised channel with disconneted riparian zone

During restoration location B with newy cut inset river corridor protected from erosion by geotextile

Post restoration location B with hydrologically connected inset river corridor

Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Pow Burn (Farnell to Powmouth) WFD water body codes 5802 WFD (national) typology WFD water body name Pow Burn Pre-project morphology High impact realignment Reference morphology Passive meandering Desired post project morphology Low impact realignment Heavily modified water body No National/international site designation UK - Areas of Special Protection Local/regional site designations Protected species present Yes Invasive species present No Species of interest Atlantic salmon, European Otter Dominant hydrology Dominant substrate Sand/Gravel River corridor land use Intensive agriculture (arable) 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) 25002,500 m <br />2.5 km <br />250,000 cm <br /> Project started 2015/04/05 Works started 2016/08/15 Works completed 2017/10/27 Project completed Total cost category 100 - 500 k€ Total cost (k€) Benefit to cost ratio Funding sources SEPA Water Environment Fund 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 Improving hydromorphological condition Biology Improved habitat for SAC designated species (salmon, otter) Physico-chemical Other reasons for the project Reducing flood risk Measures Edit Measures Structural measures Bank/bed modifications Set back embankments, Bank reprofiling Floodplain / River corridor Creation of inset floodplain, Creation of multi stage channel, Tree planting Planform / Channel pattern Flow deflectors 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