Case study:Westborough: Difference between revisions

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{{Project overview
{{Project overview

Latest revision as of 13:39, 27 February 2024

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Location: 52° 59' 31.63" N, 0° 43' 27.47" W
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Project overview

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Status Complete
Project web site
Themes Fisheries, Habitat and biodiversity
Country England
Main contact forename Matt
Main contact surname Parr
Main contact user ID
Contact organisation Environment Agency
Contact organisation web site http://www.gov.uk/government/organisations/environment-agency
Partner organisations
Parent multi-site project

Case_study:Upper Witham Restoration

This is a parent project
encompassing the following
projects
No
Reveted bank at Westborough post works

Project summary

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To take advantage of regular maintenance activities and utilise existing woody materials to reduce bank side erosion, whilst creating a better riverine habitat.

Objectives:

  • Increase riverine diversity
  • Stabilise eroding banks
  • Reduce sediment input in to the river
  • Provide fish refuge areas
  • To explore environmental options whilst undertaking regular maintenance activities
  • Bring multiple benefits through a joined up approach.
  • Reduce ongoing maintenance cost
  • Utilise existing materials
  • Meet Water Framework Directive objectives

Phase 1 of the project delivered works along a section of bank 300 metres long, initially 40 meters have been reveted and a number of trees pinned. Phase 2 increased the length of works by a further 1.5km and included bank protection and tree pinning.

Monitoring surveys and results

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Lessons learnt

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That by looking at our existing maintenance works; we can promote best practice by delivering cost saving initiatives that have a wider benefit on river ecology with minimal cost implications.


Image gallery


Works being undertaken.
Completed works in low and high flow events.
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Catchment and subcatchment

Catchment

River basin district Anglian
River basin Witham

Subcatchment

River name Upper Witham
Area category 10 - 100 km²
Area (km2)
Maximum altitude category Less than 100 m
Maximum altitude (m) 4646 m <br />0.046 km <br />4,600 cm <br />
Dominant geology Calcareous
Ecoregion Great Britain
Dominant land cover Arable and Horticulture
Waterbody ID GB105030056760



Other case studies in this subcatchment: Aubourn Rock Ramp and Habitat Works, Belton Floodplain Reconnection and River Restoration, Dysart Park, Grantham Habitat Improvement, Grantham Blue Green - Urban Reach, Little Ponton, Manthorpe Floodplain Reconnection, Papermill Weir Section in-channel restoration, River Witham Great Ponton, Stainby Road, Colsterworth, Syston and Barkston Restoration... further results


Site

Name Westborough
WFD water body codes GB105030056780
WFD (national) typology
WFD water body name Witham Confluence Cringle Brook to Confluence Brant
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) 18701,870 m <br />1.87 km <br />187,000 cm <br />
Project started 2024/09/01
Works started
Works completed
Project completed
Total cost category 10 - 50 k€
Total cost (k€) 1750017,500 k€ <br />17,500,000 € <br />
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 Land drainage
Hydromorphology
Biology Fish
Physico-chemical Phosphate
Other reasons for the project


Measures

Structural measures
Bank/bed modifications Tree hinging work over long section of Witham.
Floodplain / River corridor
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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