Case study:De-culverting Moselle Brook at Lordship Recreation Ground

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Location: 51° 35' 41", -0° 5' 12"
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Project overview

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Status Complete
Project web site
Themes Habitat and biodiversity, Social benefits
Country England
Main contact forename Mel
Main contact surname Challis
Main contact user ID
Contact organisation Environment Agency
Contact organisation web site http://www.environment-agency.gov.uk
Partner organisations Haringey Council, Friends of Lordship recreation ground
Parent multi-site project
This is a parent project
encompassing the following
projects
No
Looking upstream along de-culverted section of Moselle Brook

Project summary

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Culverted section of Moselle Brook through Lordship Recreation Ground was daylighted. New meandering channel dug with 30 degree banks planted with native species (mostly). New channel planted with flowering rush, sedge and flag. Appearance of new channel looked excellent, however due to the number of misconnections upstream the channel was full of sewage fungus and the water had a strong smell of raw sewage.

Monitoring surveys and results

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Lessons learnt

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Image gallery


Lordship rec with new river pathway and native meadow planting
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Catchment and subcatchment

Catchment

River basin district Thames
River basin London

Subcatchment

River name Moselle Brook
Area category 10 - 100 km²
Area (km2)
Maximum altitude category 100 - 200 m
Maximum altitude (m) 130
130 m
0.13 km
13,000 cm
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Urban
Waterbody ID GB106038027920



Other case studies in this subcatchment: Moselle Brook - Brook Road


Site

Name Moselle Brook at Lordship Recreation Ground
WFD water body codes GB106038027920
WFD (national) typology
WFD water body name Moselle Brook
Pre-project morphology
Reference morphology
Desired post project morphology
Heavily modified water body Yes
National/international site designation
Local/regional site designations
Protected species present No
Invasive species present Yes
Species of interest
Dominant hydrology Quick run-off
Dominant substrate Silt
River corridor land use Urban, Parklands garden
Average bankfull channel width category 2 - 5 m
Average bankfull channel width (m)
Average bankfull channel depth category 0.5 - 2 m
Average bankfull channel depth (m)
Mean discharge category 1 - 10 m³/s
Mean annual discharge (m3/s)
Average channel gradient category 0.001 - 0.01
Average channel gradient
Average unit stream power (W/m2)


Project background

Reach length directly affected (m) 300
300 m
0.3 km
30,000 cm
Project started
Works started 2011/09/01
Works completed 2012/02/01
Project completed
Total cost category more than 10000 k€
Total cost (k€)
Benefit to cost ratio
Funding sources Help a London Park, Environment Agency

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 culverted watercourse
Hydromorphology Channel pattern/planform, Quantity & dynamics of flow, Width & depth variation
Biology Macrophytes and/or phytobenthos: Taxonomic composition
Physico-chemical Specific non-synthetic pollutants, Oxygen balance, Nutrient concentrations
Other reasons for the project Socio-economic


Measures

Structural measures
Bank/bed modifications Culvert replacement/repair, Bank reprofiling
Floodplain / River corridor Riparian planting, Sustainable urban drainage ponds (SUDs)
Planform / Channel pattern Deculverting
Other
Non-structural measures
Management interventions
Social measures (incl. engagement) Improved public access, Information panels for people, Riverside walkway
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
Invertebrates Yes Yes No Yes No Awaiting results

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
River Habitat Survey Yes Yes Yes Yes No Awaiting results


Monitoring documents



Additional documents and videos


Additional links and references

Link Description
http://www.lordshiprec.org.uk/ Friends of Lordship Rec Ground

Supplementary Information

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