Case study:River Leith Restoration Project, Thrimby, Penrith, Cumbria

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Location: 54° 34' 34.65" N, 2° 41' 10.23" W

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Project overview

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Status	Complete
Project web site	http://www.edenriverstrust.org.uk/
Themes	Fisheries, Habitat and biodiversity, Land use management - agriculture, Monitoring, Water quality
Country	England
Main contact forename	Joanne
Main contact surname	Backshall
Main contact user ID	User:JoanneBackshall
Contact organisation	Eden Rivers Trust
Contact organisation web site	http://www.edenriverstrust.org.uk
Partner organisations	Environment Agency, Natural England
Parent multi-site project	Case_study:Cumbria River Restoration Strategy
This is a parent project encompassing the following projects	No

Aerial view of remeandered River Leith at Thrimby, Penrith, Cumbria

Project summary

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The River Eden River Restoration Strategy (RERRS) is a partnership project involving Eden Rivers Trust, the Environment Agency and Natural England, working with land owners and farmers. It aims to return rivers in the Eden catchment to a more natural state for the benefit of wildlife and people. It was developed as a remedy for the unfavourable condition of large parts of the River Eden and Tributaries Site of Special Scientific Interest.

A straightened section of the River Leith at Thrimby Hall near Penrith was returned to its original meandering course with about 280 m of straightened channel now being 0ver 350 m long. This site is a demonstration of river restoration techniques and the many benefits that this approach can bring to wildlife and people.

Monitoring surveys and results

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- Pre-restoration aerial and ground surveys, to be repeated in 2015.

Lessons learnt

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The River Restoration Centre conducted an evaluation of this and other Cumbria River Restoration Strategy projects during 2015 and the report of their findings is available on the RRC website.

Image gallery

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Aerial view of remeandered River Leith at Thrimby, Penrith, Cumbria

Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Solway Tweed River basin Eden and Esk Subcatchment River name River Leith Area category 10 - 100 km² Area (km2) Maximum altitude category 200 - 500 m Maximum altitude (m) 368368 m <br />0.368 km <br />36,800 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Improved grassland Waterbody ID GB102076070900 Site Edit site Name River Leith Restoration Project WFD water body codes GB102076070900 WFD (national) typology Calcareous WFD water body name River Leith Pre-project morphology Reference morphology 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 Edit project background Reach length directly affected (m) 280280 m <br />0.28 km <br />28,000 cm <br /> Project started 2014/03/03 Works started Works completed Project completed 2015/11/02 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 Channel pattern/planform Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor River naturalisation, Remeandering Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Work with farmers and land managers, Survey work 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