Case study:Whit Beck River Restoration Project: Difference between revisions

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|Contact organisation url=westcumbriariverstrust.org
|Contact organisation url=westcumbriariverstrust.org
|Partner organisations=Environment Agency & Natural England
|Partner organisations=Environment Agency & Natural England
|Name of parent multi-site project=Case_study:Cumbria River Restoration Strategy
|Multi-site=No
|Multi-site=No
|Project picture=DSC09120.JPG
|Project picture=DSC09120.JPG

Revision as of 13:44, 12 November 2014

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Location: 54° 36' 40.86" N, 3° 18' 43.29" W
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Project overview

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Status In progress
Project web site
Themes Environmental flows and water resources, Flood risk management, Habitat and biodiversity, Hydromorphology, Land use management - agriculture, Land use management - forestry
Country England
Main contact forename Ian
Main contact surname Creighton
Main contact user ID User:Ian Creighton
Contact organisation West Cumbria Rivers Trust
Contact organisation web site http://westcumbriariverstrust.org
Partner organisations Environment Agency & Natural England
Parent multi-site project

Case_study:Cumbria River Restoration Strategy

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encompassing the following
projects
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Project summary

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Whit Beck was an ambitious major pilot river restoration project undertaken by West Cumbria Rivers Trust on the behalf of the Environment Agency and Natural England summer 2014. This project was undertaken on Whit Beck, a fast flowing spate tributary of the River Cocker (River Derwent SSSI) in the English Lake District. A 350m section of heavily modified raised river channel was successfully diverted to natural self-sustainable diverse watercourse. The benefits include: • Restoration of natural river processes and associated features (WFD requirement) • Increase in stream length (over 3 fold - 1205m) and channel area (4/5 fold) • Provision of a wider range of habitats enabling fish to carry out the various stages of their life cycles within the new reach • Significantly improvement in floodplain connectivity (flood storage) • Increased in channel storage for gravels • The provision of wildlife corridors (plants, insects and animals) • Increased flood proofing for fish redds • New deciduous woodlands and woodland strips • Enhanced landscape

There were four parties with a vested interest in Whit Beck, two farmers, one tenant and an independent landowner. The scheme was entirely voluntary and all parties had to be on board for the project to get off the ground and succeed. It took two years of planning, investigations and engineering to complete. The total cost over the life of the project is in the vicinity of £700k. Construction was completed by the end of September 2014.

Monitoring surveys and results

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Lessons learnt

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Image gallery


The heavily modified raised river channel
Before divesion
During construction of new channel
ShowHideAdditionalImage.png


Catchment and subcatchment

Catchment

River basin district North West
River basin Derwent (NW)

Subcatchment

River name Whit Beck
Area category 10 - 100 km²
Area (km2)
Maximum altitude category 500 - 1000 m
Maximum altitude (m) 785785 m <br />0.785 km <br />78,500 cm <br />
Dominant geology Siliceous
Ecoregion Great Britain
Dominant land cover Permanent pasture and woodland strips
Waterbody ID GB112075070380



Other case studies in this subcatchment: Cumbria River Restoration Program - Whitbeck restoration project - West Cumbria


Site

Name
WFD water body codes GB112075070380
WFD (national) typology Mid, Small, Siliceous
WFD water body name Whit Beck
Pre-project morphology Straightened, Reinforced banks
Reference morphology Actively meandering
Desired post project morphology Actively meandering, Single channel
Heavily modified water body No
National/international site designation
Local/regional site designations
Protected species present No
Invasive species present No
Species of interest Atlantic salmon (Salmo salar), Otter (Lutra lutra), Floating water-plantain (Luronium natans), lamprey
Dominant hydrology
Dominant substrate
River corridor land use Improved/semi-improved grassland/pasture
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

Reach length directly affected (m) 0.3km increased to 1.2km"kmincreasedto1.2km" is not declared as a valid unit of measurement for this property.
Project started 2013/10/01
Works started 2014/06/16
Works completed 2014/10/03
Project completed
Total cost category 500 - 1000 k€
Total cost (k€)
Benefit to cost ratio
Funding sources Environment Agency & Natural England

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

Mitigation of a pressure
Hydromorphology Heavily engineered high level carrier
Biology Limited habitat
Physico-chemical
Other reasons for the project Re-connect river with floodplain and reduction of substrate delivery to R Cocker


Measures

Structural measures
Bank/bed modifications Constructed new natural channel and imported mixed substrate for the new river to sort
Floodplain / River corridor Re-connected to local floodplain and provided a site for gravel deposition to help reduce build up in River Cocker
Planform / Channel pattern Channel naturalisation; Creation of new meandering channel
Other
Non-structural measures
Management interventions
Social measures (incl. engagement) Significant engagement with local community
Other


Monitoring

Hydromorphological quality elements

Element When monitored Type of monitoring Control site used Result
Before measures After measures Qualitative Quantitative

Biological quality elements

Element When monitored Type of monitoring Control site used Result
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Physico-chemical quality elements

Element When monitored Type of monitoring Control site used Result
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Monitoring documents



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Supplementary Information

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