Case study:Gilly Mease Confluence

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Catchment

River basin district	Humber
River basin	Tame Anker and Mease

Subcatchment

River name	River Mease from Gilwiskaw Bk to Hooborough Brook
Area category	10 - 100 km²
Area (km2)	170km217,000 ha <br />
Maximum altitude category	100 - 200 m
Maximum altitude (m)	185185 m <br />0.185 km <br />18,500 cm <br />
Dominant geology	Calcareous
Ecoregion	Great Britain
Dominant land cover	Arable and Horticulture
Waterbody ID

Other case studies in this subcatchment: Cotom in the Elms, Edingale, Grange Farm, Restoring the River Mease Catchment, Yew Tree Farm

Project overview

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Status	Complete
Project web site
Themes	Environmental flows and water resources, Flood risk management, Habitat and biodiversity, Hydromorphology, Water quality
Country	England
Main contact forename	Ruth
Main contact surname	Needham
Main contact user ID
Contact organisation	Trent Rivers Trust
Contact organisation web site	http://www.trentriverstrust.org
Partner organisations	AECOM
Parent multi-site project	Case_study:Restoring the River Mease Catchment
This is a parent project encompassing the following projects	No

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Project summary

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The main aim was to capture and store phosphorous within reconnected floodplain areas to reduce nutrient levels. 1.7ha floodplain bounded by Gilwiskaw Brook, River Mease and a disused railway embankment. The channels were inset, deep and had poor floodplain connectivity. There was historic embankment and possible dredging and large fluctuations in orthophosphate levels. Wetland creation - lowered ground level by 0.5m, excavated anastomosing channels and ponds. Introduced gravel and created a bridge crossing to reinstate permission access. 2.5ha of terrestrial habitat improvements, 0.3km main river stretch.

Monitoring surveys and results

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Fixed point photography. Monitored vegetation regeneration and channel movements. Measham volunteer group are familiar with this site and undertake maintenance.

Lessons learnt

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Location: 52° 41' 26.02" N, 1° 30' 3.24" W

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Image gallery

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Site Edit site Name WFD water body codes WFD (national) typology WFD water body name Pre-project morphology Reference morphology Desired post project morphology Heavily modified water body National/international site designation Local/regional site designations Protected species present Invasive species present 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 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