Case study:Colne Brook

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Location: 51° 30' 56", -0° 29' 28"
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Project overview

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Status Planned
Project web site
Themes Habitat and biodiversity, Social benefits
Country England
Main contact forename Joanna
Main contact surname Heisse
Main contact user ID
Contact organisation Environment Agency
Contact organisation web site http://www.gov.uk/government/organisations/environment-agency
Partner organisations Three valleys water, Angling club, London borough of Hillingdon south bucks BC
Parent multi-site project
This is a parent project
encompassing the following
projects
No
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Project summary

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Willow pollarding; minor habitat improvements. Sympathetic landowner. Example of how enhancements could be carried out through rest of the catchment with limited investment. Implement management summary.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

Catchment

River basin district Thames
River basin Colne

Subcatchment

River name Colne and GUC (from confluence with Chess to Ash)
Area category 100 - 1000 km²
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 181
181 m
0.181 km
18,100 cm
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Improved grassland
Waterbody ID GB106039023090



Other case studies in this subcatchment: Fishery/habitat enhancement on the Grand Union Canal, Habitat Improvements on the River Colne at West Drayton, Uxbridge Moor Backwater


Site

Name
WFD water body codes GB106039023090
WFD (national) typology
WFD water body name Colne and GUC (from confluence with Chess to Ash)
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

Reach length directly affected (m) 1000 m
1 km
100,000 cm
Project started 2008/01/01
Works started
Works completed
Project completed
Total cost category 10 - 50 k€
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

Mitigation of a pressure
Hydromorphology
Biology
Physico-chemical
Other reasons for the project Catchment enhancement, habitat improvements


Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor Tree management
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
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
Before measures After measures Qualitative Quantitative

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

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


Monitoring documents



Additional documents and videos


Additional links and references

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Supplementary Information

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