Case study:Bocking Blackwater River Restoration

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Location: 51° 53' 8.66" N, 0° 33' 37.43" E

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Project overview

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Status	In progress
Project web site
Themes
Country	England
Main contact forename	Kieren
Main contact surname	Alexander
Main contact user ID	User:KierenAlexander
Contact organisation	Essex Wildlife Trust
Contact organisation web site	http://www.essexwt.org.uk
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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Currently, the River Blackwater (Pant, upstream) is classed under the WFD framework as heavily modified with poor potential. It is this assessment that drives the restoration project. This project is funded by the Environment Agencies Catchment Restoration fund and is part of the Essex Healthy headwaters scheme. Physical earthworks are due to commence in Winter 2014/15

The main aspect of this project is to repair river banks to reduce erosion, poaching and silt inputs, the second is to improve riparian habitat and floristic diversity.

The river banks will be restored using a mixture of bio engineering schemes including Coir roles, willow spiling and bank re-profiling. This will introduce floristic diversity, establish emergent vegetation, decrease silt input from the eroding banks and reduce the poaching effect from dog walkers.

All the above should add up to the an overall improvement of the local Riverine habitat and an improvement in the general water qaulity and hydro morphological condition of the river.

Monitoring surveys and results

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Fixed point photography will be used to monitor physical changes both post and pre work. In addition a baseline survey of macrophytes, invertebrates and water quality surveys – data gathered will include – turbidity, sediment, Ammonia/Dissolved Oxygen/Phosphate using field phosphate sampling equipment. This project site will be resurveyed against baseline at the conclusion of the project in 2015.

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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 Anglian River basin Combined Essex Subcatchment River name Blackwater Pant Area category 10 - 100 km² Area (km2) Maximum altitude category Less than 100 m Maximum altitude (m) 6868 m <br />0.068 km <br />6,800 cm <br /> Dominant geology Calcareous Ecoregion Great Britain Dominant land cover Arable and Horticulture Waterbody ID GB105037033860 Site Edit site Name Bocking Blackwater LNR WFD water body codes WFD (national) typology WFD water body name 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 Yes 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) 450450 m <br />0.45 km <br />45,000 cm <br /> Project started 2012/11/22 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 Soft engineering solutions 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