Case study:BALLYMONEY RIVERSIDE PARK RESTORATION PROJECT

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Location: 55° 4' 9.30" N, 6° 30' 26.56" W

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Project overview

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Status	Complete
Project web site
Themes	Fisheries, Flood risk management, Habitat and biodiversity, Social benefits, Urban
Country	Northern Ireland
Main contact forename	Gareth
Main contact surname	Greer
Main contact user ID
Contact organisation	Rivers Agency, Northern Ireland (DARDNI)
Contact organisation web site	http://www.dardni.gov.uk/riversagency
Partner organisations	Ballymoney Borough Council; Dept Culture Arts and Leisue Inland Fisheries Group; Northern Ireland Environment Agency
This is a parent project encompassing the following projects

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Project summary

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This is an urban project, which aims to return an on-line boating lake on the Ballymoney River, to a productive salmonid stream. The impetus for the project was the ongoing cost of dredging the boating lake, which stimulated broader thinking towards a more sustainable plan for the site. Following a flood risk assessment, a scheme was agreed which entailed; the removal of a low weir, the restoration of a natural channel width, the restoration of natural substrate , the creation of in-channel features and the creation of wetland floodplain habitat which will provide flood storage. The project will be used as a demonstration site for multi-benefit restoration in an urban environment, and as an example of multi-agency working and funding.

Works included: Removal of low weir to permit natural sediment transport.

Monitoring surveys and results

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Pre works assessment included a River Hydromorphology Assessmeent (RHAT) and fisheries survey, and a flood risk assessment. The site will be monitored for several years, with the council monitoring the development of the wetland and impacts on wildfowl, Rivers Agency continuing flood risk assessment, DCAL carrying out fish stock and habitat assessment, and NIEA carry out a reRHAT on regular intervals.

Lessons learnt

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The value of a multi-benefit scheme, through joint funding and agreed outcomes. The value of good PR and information from an early stage in project development.

Image gallery

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for comparison with post works

fishery and flow measures

Catchment and subcatchment Select a catchment/subcatchment Site Edit site Name Ballymoney Riveside Park WFD water body codes GBNI1NB030301220 WFD (national) typology WFD water body name Ballmoney River Pre-project morphology Artificial channel Reference morphology Low gradient passively meandering Desired post project morphology Low gradient passively meandering, Pool-riffle 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 Artificially regulated Dominant substrate Silt, Cobble, Gravel River corridor land use Urban Average bankfull channel width category 5 - 10 m Average bankfull channel width (m) Average bankfull channel depth category 0.5 - 2 m 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) 250250 m <br />0.25 km <br />25,000 cm <br /> Project started 2014/04/07 Works started 2014/09/22 Works completed 2014/12/19 Project completed Total cost category 100 - 500 k€ Total cost (k€) Benefit to cost ratio Funding sources Ballymoney Council; DCAL Inland Fisheries (NASCO money); DARD Rivers Cost for project phases Phase cost category cost exact (k€) Lead organisation Contact forename Contact surname Investigation and design 1 - 10 k€ Department of Agriculture & Rural Development Rivers Agency Gareth Greer Stakeholder engagement and communication 1 - 10 k€ Ballymoney Borough Council Rachel Bain Works and works supervision 100 - 500 k€ Department of Agriculture & Rural Development Rivers Agency Gareth Greer Post-project management and maintenance 1 - 10 k€ Ballymoney Borough Council Rachel Bain Monitoring 1 - 10 k€ NIEA Mary Toland Supplementary funding information DARD Rivers contributed 10k towards the overall cost of the project, and acted as contractor for the scheme, employed by the council.. DCAL Inland Fisheries contributed 30k through NASCO (North Atlantic Salmon Conservation Organisation) funding. All other costs covered by Ballymoney Borough Council Reasons for river restoration Edit reasons for restoration Mitigation of a pressure Impoundments (not hydropower), Urbanisation Hydromorphology Continuity of sediment transport, Freshwater flow regime, Width & depth variation, Channel pattern/planform, Quantity & dynamics of flow Biology Fish: Abundance Physico-chemical Other reasons for the project improving local park; education; wetland creatio; flood storage Measures Edit Measures Structural measures Bank/bed modifications Weir removal, Addition of substrate and in channel features, Alteration in channel dimensions Floodplain / River corridor Creation of wetland, Creation of ponds and scrapes Planform / Channel pattern Creation of new meandering channel, Diversification of in-channel features Other Weir removal Non-structural measures Management interventions management of wetland by council (new area of work) Social measures (incl. engagement) Community Education, Public amenity and perception 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 Channel pattern/planform Yes No Yes No No Freshwater flow regime Yes No Yes No No Biological quality elements Edit biological quality elements Element When monitored Type of monitoring Control site used Result Before measures After measures Qualitative Quantitative Fish Yes No Yes No No [[]] No No No No No 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 Channel bed morphology. Yes No Yes No No 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 This is a partnership project, involving government departments and the local council. The project was opportunistic in nature, being developed due to the maintenance costs of the current situation. The benefits are as much social and educational as environmental. Monitoring using RHAT and fish surveys will commence next year, once the project has "settled". It will be used as a demonstration site for urban restoration