Case study:Rainham Marshes

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Location: 51° 30' 27.07" N, 0° 11' 4.28" E
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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 Jennifer
Main contact surname Norman
Main contact user ID
Contact organisation
Contact organisation web site
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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Creation of junction nodes for Water Voles and re-wetting sections of the ditch network within the SSSI. Survey of Water Vole population on the site. The Inner Thames Marshes is a stronghold for Water Vole. The condition of the SSSI is poor and is currently unmanaged. The ditch network is also unmanged and some ditches are becoming silted up and dry.

Monitoring surveys and results

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Lessons learnt

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Catchment and subcatchment

Catchment

River basin district Thames
River basin Roding, Beam and Ingrebourne

Subcatchment

River name Southall Sewer and Runningwater Brook (Ingrebourne)
Area category 10 - 100 km²
Area (km2)
Maximum altitude category Less than 100 m
Maximum altitude (m) 3939 m <br />0.039 km <br />3,900 cm <br />
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Arable and Horticulture
Waterbody ID GB106037028090



Other case studies in this subcatchment: Ferry Lane North drainage realignment


Site

Name
WFD water body codes GB106037028090
WFD (national) typology
WFD water body name Southall Sewer and Runningwater Brook (Ingrebourne)
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) 300 m0.3 km <br />30,000 cm <br />
Project started 2010/01/01
Works started
Works completed
Project completed
Total cost category 50 - 100 k€
Total cost (k€)
Benefit to cost ratio
Funding sources £42k secured from NEAS led EA tidal sluice upgrade project, mitigation money.

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 Quantity & dynamics of flow
Biology Vertebrates
Physico-chemical
Other reasons for the project


Measures

Structural measures
Bank/bed modifications
Floodplain / River corridor Habitat enhancement
Planform / Channel pattern
Other
Non-structural measures
Management interventions
Social measures (incl. engagement)
Other Survey work, Wildlife surveys


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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