Case study:Kensworth Quarry Chalk Pit Site Restoration

Location: 51° 51' 56.34" N, 0° 31' 15.49" W

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Project overview

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Status	Planned
Project web site
Themes
Country	England
Main contact forename	Adam
Main contact surname	Hillier
Main contact user ID
Contact organisation	Ver Valley Society
Contact organisation web site
Partner organisations
Parent multi-site project	Case_study:Kensworth Quarry Chalk Pit Restoration
This is a parent project encompassing the following projects	No

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Project summary

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Kensworth Quarry is the Us largest chalk quarry and one of the largest in the world. It is located on the top of the Chilterns ridge close to the head valleys of the River Ver.

Production from the quarry is due to end within the next decade after which the site will be subject to a site restoration program.

It is proposed to evaluate the technical and commercial feasibility of using the chalk pit as a perched reservoir to provide a wetland natural habitat of national significance, to provide pumped hydro energy storage for local renewable energy generation plants, and to provide head water support to the River Ver for up to three months per year.

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Site

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Name
WFD water body codes
WFD (national) typology	Calcareous
WFD water body name
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)

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Catchment and subcatchment Select a catchment/subcatchment Project background Edit project background Reach length directly affected (m) Project started Works started Works completed Project completed Total cost category 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 Edit reasons for restoration Mitigation of a pressure Hydromorphology Biology Physico-chemical Other reasons for the project Measures Edit Measures Structural measures Bank/bed modifications Floodplain / River corridor Planform / Channel pattern Other Non-structural measures Management interventions Social measures (incl. engagement) Other Monitoring Hydromorphological quality elements Edit Hydromorphological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Physico-chemical quality elements Edit 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 Edit Other responses Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Monitoring documents Upload monitoring documents Additional documents and videos Upload additional documents Additional links and references Edit links and references Link Description Supplementary Information Edit Supplementary Information