Case study:The River Deerness Project 2

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Location: 54° 46' 51.92" N, 1° 36' 49.02" W

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Project overview

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Status	In progress
Project web site	http://http://www.wear-rivers-trust.org.uk/content/deernessrestoration
Themes	Habitat and biodiversity, Hydromorphology, Water quality
Country	England
Main contact forename	Steve
Main contact surname	Hudson
Main contact user ID
Contact organisation	Wear Rivers Trust
Contact organisation web site	http://http://www.wear-rivers-trust.org.uk/
Partner organisations	Durham County Council, Durham University
Parent multi-site project	Case_study:The River Deerness Project
This is a parent project encompassing the following projects	No

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Project summary

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The Old Durham Beck catchment, to the east of Durham City and covering 55 km2, has been heavily modified by mine workings and railway infrastructure and is one of the most intensively farmed Wear tributaries. It is categorised as having moderate to poor ecological status, failing for fish, ammonia and phosphate. Walkovers identified a series of culverts obstructing fish passage. In November 2011 approximately 50 congregating salmon were observed unable to make their way upstream.

The outcomes of the project are the following: enhanced habitat connectivity throughout both catchments allowing all fish species, migratory and non-migratory, maximum scope to spawn and feed; improved knowledge of fish populations and behaviours through baseline and postimplementation monitoring and evaluation; progress toward/achievement of Good Ecological Status and focus on any residual water quality issues required to achieve good status; establishment of partnership working and joint delivery to be extended under the auspices of the Wear Catchment Management Plan.

Monitoring surveys and results

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The Wear Rivers Trust operates fish and inverte-brate surveys to assess fish populations and water health in both catchments. Under CRF a Durham University PhD student, with WRT and volunteer support, will survey below and above each obstruc-tion both before and after restoration activities to measure impacts on those animal groups. Changes in invertebrate communities are not expected as a direct result of the restoration activities but they can inform on the wider food web for fish feeding opportunities, and provide biotic indices of water quality, giving wider insight into local environmental quality. Waste water management is significant across the Lower Wear system, including these two catchments. Supplementary projects, based on a separate volunteer walkover programme, will be developed under the auspices of the Wear River Catchment Management Plan to identify and address point and diffuse sources of pollution, in order to augment CRF actions for improvement to fish movement within these catchments.

Lessons learnt

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Image gallery

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Catchment and subcatchment Select a catchment/subcatchment Edit the catchment and subcatchment details (affects all case studies in this subcatchment) Catchment River basin district Northumbria River basin Wear Subcatchment River name Browney from Smallhope Burn Deerness confl Area category 100 - 1000 km² Area (km2) Maximum altitude category 200 - 500 m Maximum altitude (m) 309309 m <br />0.309 km <br />30,900 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Improved grassland Waterbody ID GB103024077551 Other case studies in this subcatchment: The River Deerness Project Site Edit site Name Old Durham Beck WFD water body codes GB103024077551 WFD (national) typology WFD water body name Browney from Smallhope Burn Deerness confl 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 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) Project started 2012/07/01 Works started Works completed Project completed 2015/03/31 Total cost category 100 - 500 k€ Total cost (k€) 108108 k€ <br />108,000 € <br /> Benefit to cost ratio Funding sources Defra Catchment Restoration 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 Water quality, Barriers to fish migration Hydromorphology Continuity for organisms Biology Phytobenthos, Fish Physico-chemical Nutrient concentrations 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 Fish No Yes Yes No No Awaiting results Invertebrates No Yes Yes No No Awaiting results 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 Nutrient concentrations No Yes Yes No No Awaiting results 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 RRC Monitoring table - Deerness Additional documents and videos Upload additional documents CRF Project briefing note - Deerness Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information