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Case Study Category: Sewer Flood Alleviation

Series of connected wetland ponds - Courtesy of Mott MacDonald (David Naismith)
Groundwater Impacted Storm Overflows (2024)
View across Burnside Square, Campbeltown - Courtesy of DAWSON-WAM Ltd
Campbeltown Flood Protection Scheme (2024)
Stormwater storage shaft under construction - Courtesy of Whitehouse Studios and (right) Inside the tank - Courtesy of George Leslie Ltd
Braidholm Road Sewer Flood Alleviation (2024)
Marchmont Road FAS stormwater storage tank under construction - Courtesy of Paul Milligan & Caledonia Water Alliance
Marchmont Road Flood Alleviation Scheme (2024)
Glass-coated steel stormwater storage tanks - Courtesy of @one Alliance
Cotton Valley WRC (2024)
Drone photograph of completed site (May 2024) - Courtesy of DAWSON-WAM Ltd
Lower Woodburn WwPS (2024)
(left) Isolators and (right) new flow meters within chamber - Courtesy of Galliford Try
Offwell Storm Tank (2024)
View of Ravenhill Avenue & Ravenhill Road from Edge of Ormeau Park - Courtesy of GEDA Construction
Ravenhill Avenue, Belfast, Flood Alleviation Project (2024)
(left) New EDM solar powered control kiosk and (right) new ultrasonic head in existing sewer - Courtesy of Galliford Try
Event Duration Monitoring Programme (2024)
Inside the Galmpton stormwater storage tank - Courtesy of Galliford Try
Galmpton Catchment (2024)
Glenboi Flood Alleviation Project (2023)
Ards North Wastewater Improvement Scheme (2023)
Stroud Sewerage Strategy Project: Part 2 (2023)
Meadow Road Stormwater Tank (2023)
St Augustines Road Flood Alleviation (2023)
Construction of the new main storm overflow shaft - Courtesy of Esh-Stantec JV
Johnson Street Storm Overflow Screening Project (2022)
Tideway East – Earl Pumping Station (2022)
Aerial of detention tank construction - Courtesy of United Utilities
High Frequency Risk Reduction: Moor Road (2022)
Detention tank shaft construction: (left) jacking ring and (right) roof beams installation - Courtesy of United Utilities
High Frequency Risk Reduction: Rock View (2022)
Stroud Sewerage Strategy Project: Part 1 (2022)
Aerial view of the Blackburn Nereda plant and tertiary treatment plant at Blackburn WwTW - Courtesy of United Utilities
Blackburn and Darwen WwTWs (2022)
Roundhay Park Lane CSO (2022)
Ravenhill Avenue, Belfast, Flood Alleviation Project (2022)
High Frequency Risk Reduction: Garstang Road (2021)
Blackburn and Darwen WwTWs (2021)
Tideway East – TBM Delivery (2021)
Tideway Central – Watertightness Testing (2021)
Tideway Central – Albert Embankment Foreshore (2021)
Tideway Central – Main Tunnel Primary Lining (2021)
Tideway Central – Main Tunnel Secondary Lining (2021)
Tideway Central – Junctions (2021)
Tideway Central – Blackfriars Bridge Foreshore (2021)
Tideway Central – Falconbrook PS CSO Shaft (2021)
Tideway Central – Vortex Pipes (2021)
Lowdham, Gunthorpe Road, Flood Alleviation (2021)
Maryville Avenue, Belfast, Flood Alleviation Project (2021)
Toome Road, Ballymena, Flood Alleviation Project (2021)
Tideway Central – Falconbrook Pumping Station (2020)
Counters Creek Flood Alleviation Scheme (2020)
Tideway Central – Marine Works (2020)
Tideway Central – Chelsea Embankment Foreshore (2020)
Morecambe WwTW Catchment Strategy: Part 3 (2020)
Tideway Central – Albert Embankment Foreshore (2020)
Blackburn and Darwen WwTWs (2020)
Nottingham, Shakespeare Street, Flood Alleviation (2020)
Kirk Hallam, Abbott Road, Flood Alleviation Scheme (2020)
Phillipson Street CSO Scheme (2020)
Killingworth & Longbenton Water Management Ph 3 (2019)
Paisley Tunnel Project (2019)
Thanet Sewer Rehabilitation Scheme – Phase 2 (2019)
Tideway East – Hydraulic Modelling (2019)
Slimbridge Infiltration Reduction (2019)
Quay Road Charlestown DG5 Flooding Scheme (2019)
Tideway West – Hammersmith PS (2019)
Crankley Point Terminal Pumping Station (2019)
Alum Waters Sewer Flooding Alleviation Scheme (2019)
Morecambe WwTW Catchment Strategy: Part 2 (2019)
Sheet piled cofferdam for open-dig section of 1200mm combined sewer and 900mm overflow pipelines - Courtesy of DAWSON-WAM Ltd
Ormeau Avenue Sewerage Upgrade (2019)
Mansfield, Gunthorpe Court, Flood Alleviation (2019)
Acklam Road Screening Structure (2013)
Begelly & Kilgetty FAS (2013)
Briton Ferry FAS (2013)
Coventry Road (Hinckley) FAS (2013)
Dukinfield (Wharf Street) UIDs (2013)
Hartridge UID Scheme (2013)
Lee Tunnel – TBM Launch (2013)
Nuns Moor Pilot Sustainability Study (2013)
Preston 32 UIDs (2013)
Rochdale AMP5 UIDs (2013)
Yorkshire Water rBWD – Scarborough WwTW (2013)
Lee Tunnel – TBM Drive & Tunnel Lining (2014)
Swindon Networks Upgrade Project (2014)
Singleton Park (Swansea) 5 CSOs Scheme (2014)
SAL 172 Stormwater Storage: Part 1 (2014)
Preston 7 UIDs (2014)
Newry Road Wastewater Pumping Station (2014)
Wastewater Pumping Stations Upgrade Project (2014)
Maida Vale FAS (2014)
Londonderry Drainage Area Plan Implementation (2014)
Llanelli – Retro Fit Green Infrastructure (2014)
Kennington Road FAS (2014)
Harlow Network Upgrade (2014)
Greenstreets at Counters Creek SuDS Retrofit Pilot Scheme (2014)
Glyncoed Terrace FAS (2014)
Fort Cumberland Storm Tank (2014)
Blackmill Rainscape Strategy Scheme (2014)
Blackburn WwTW UIDs (2014)
Blackburn UID Scheme (2014)
Billesdon (Church St) FAS (2014)
Barrow WwTW (2014)
Bangor Sewerage Improvement Scheme (2014)
Alltwen-Pontardawe Combined Sewer River Crossing (2014)
Burry Inlet Investigations (2012)
Carmarthen Wastewater Improvement Scheme (2012)
Harlow Surface Water Flooding (2012)
Langdon Road Sewage Pumping Station (2012)
Yorkshire Water rBWD – Scarborough WwTW (2012)
Lee Tunnel – Shaft Construction (2012)
Trelawney Ave Flood Alleviation Project (2012)
Willenhall UID (2012)
Columbia Road FAS (2012)
Wallsend Flooding (2015)
Torquay (Abbey Park) Bathing Waters (2015)
Winlaton Mill FAS (2015)
Thames Tideway Tunnel – Overview (2015)
Sycamore Road Storage Shaft FAS (2015)
St Judes Way (Rainworth) FAS (2015)
Swindon STW Network & Growth Upgrade Project (2015)
Portsmouth FAS – Early Warning Scheme (2015)
Portsmouth FAS – Sewer Network Improvements (2015)
Lee Tunnel – Tideway Pumping Station (2015)
Lee Tunnel – Secondary Lining (2015)
Ivybridge Bathing Waters (2015)
Herne Hill & Dulwich FAS (2015)
Holbeton Bathing Waters (2015)
Holt Drive (Loughborough) FAS (2015)
Colebrook FAS (2015)
Coningswath Road (Carlton) FAS (2015)
Chamberlayne Road FAS (2015)
Ash Lane Detention Tank (2015)
Sudbourne Road (Brixton) FAS (2011)
Yorkshire Water rBWD – Revised Bathing Water Improvement Programme (2011)
Meden Vale FAS (2011)
Longbenton FAS (2011)
Thames Tideway Tunnel – Overview (2011)
Leamington Sewerage Strategy (2011)
Whitley Bay Flood Alleviation Scheme (2010)
Park Avenue FAS (2010)
Maidstone – Woolley Road SuDS (2010)
Eastney Pumping Station (2010)
Cardiff East Control Strategy (2010)
West Ham FAS (2009)
The Limes Flood Prevention Scheme (2009)
UID Programme 2008-2009 (2009)
Princess Parkway, Rossendale and Wyre Estuary UIDs (2009)
Peregrine Close (Swindon) FAS (2009)
(top left) the existing Canklow regulator gate (bottom left) 3D model of the new Canklow Regulator and (right) bathymetry of Woodhouse Mill Washland - Courtesy of JBA-Bentley
Kenilworth Sewerage Strategy (2009)
Great Yarmouth FAS (2009)
Carlisle Flood Alleviation Project (2009)
Bristol City Flood Alleviation (2009)
Barrow Flood Relief Scheme (2009)
Albrighton FWS Flood Alleviation (2009)
Scunthorpe (Ashby South Grange) UID (2008)
Plimsoll CSO (2008)
Bristol City Flood Alleviation (2008)
Acomb Crescent FAS (2008)
Portslade (South Street) FAS (2007)
CSOs in a Box Installation (2007)
St Ives Flood Alleviation Scheme (2006)
Towngate CSO (2006)
Merthyr Dyfan Wastewater Storage Tank (2006)
Glasgow Strategic Drainage Plan (2006)
UID Programme (2005)
Totley Brook Flood Alleviation Scheme (2005)
Trent Vale Pumping Station (2005)
Fenham (Moorside South) DG5 Flood Alleviation Scheme (2005)
Darlington (Victoria Road) CSO (2005)
Faversham Creek CSO Wildlife Protection (2005)
Bridgewater UIDs (2005)
Bath CSOs (2005)
Teign Estuary CSOs (2004)
Yorkshire Water UID Programme (2004)
Tamerton Foliot Wastewater Storage (2004)
Stoke UIDs (2004)
Heckmondwike CSO (2004)
Gelligaled Solar Powered CSO (2004)
Glasgow Strategic Drainage Plan (2004)
Croal UID (2004)
Bristol Redland CSO (2004)
Bradford UID Improvement Scheme (2004)
(top left) the existing Canklow regulator gate (bottom left) 3D model of the new Canklow Regulator and (right) bathymetry of Woodhouse Mill Washland - Courtesy of JBA-Bentley
Barnstaple & Bideford CSOs (2004)
Yorkshire Water West Area CSO Programme (2003)
Plymouth WWT Scheme (2003)
CSO Programme (2003)
Llandudno Sewage Flooding Prevention Scheme (2003)
Foord Valley (Folkestone) Flood Alleviation Scheme (2003)
Esk Valley CSOs (2003)
Bath CSOs (2003)
Falmouth CSO Improvements (2002)
Colwyn Bay CSO Improvement Scheme (2002)
Garnswilt WwTW (2002)
Blackpool South Surface Water Strategy (2018)
Morecambe WwTW Catchment Strategy: Part 1 (2018)
Station Road (Queensbury) Sewer Flooding (2018)
Swinstie Pipe Bridge Replacement (2018)
Galgorm Wastewater Pumping Station Upgrade (2018)
Preston WwTW (2018)
South West Water Shellfish Waters NEP AMP6 Programme (2018)
Royton WwTW (2018)
Nine Elms, Battersea Growth & SuDS (2018)
Frome Valley Relief Sewer (2018)
Hagley (Newfield Road) Flood Alleviation (2018)
Pebworth-Long Marston-Stratford upon Avon Transfer (2018)
Killingworth & Longbenton Water Management (2018)
Tideway Central – Overview (2018)
Cambrian RainScape (2017)
Linnet Rise Flood Alleviation scheme (2017)
Heanor Breach Road Flood Alleviation Scheme (2017)
Foreness Point Intertidal Habitat Enhancement Plan (2017)
Tideway Central – Vessel Relocation (2017)