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Bangor University

Founded in 1884, Bangor University is an historic institution dedicated to academic excellence. We offer world-class teaching and research and have been ranked in the top 10 in the UK for student satisfaction in the National Student Survey 2019.

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PhD - Predicting future compound hazards of coastal flooding.


Wastewater assets in Low-Lying Coastal Zones are potentially at high risk from flood events, and it is vital to understand the future impacts and consequences of climate change on wastewater infrastructure.

Flooding can reduce the capacity of the sewer network, reduce outfall performance, exacerbate saline intrusion and potentially disable assets, leading to further flood risk to properties and water quality impacts, which will impact wastewater performance.

Employing simulation modelling techniques, this PhD aims to quantify flood risk of DCWW wastewater assets in LLCZ's across Wales.

PhD student: Thomas W. Clough (1st year) | | @phytoplankthom | Supervisors: Dr. Peter Robins, Prof. Davey Jones,  Dr Shelagh Malham, Dr Matthew Lewis
Full River Dee catchment and DCWW asset locations/capacity
Lower Dee catchment and DCWW asset locations/capacity
Significant Wave Height and River Flow in the lower Dee catchment


How do we correctly parameterise an estuary model to be able to capture extreme events?

(SPRC model)

What environmental conditions cause the worst impact in terms of water quality and flooding?

(inundation, asset failure, total loss)

What are the consequential impacts of compound flooding?

(saline intrusion, asset resilience, virus dispersal (COVID-19),

shellfisheries, services)

How will risk change in the future?

(magnitude, frequency, timing, loss projection)

Aims and outcomes

Dee bathymetry, DCWW asset and NRW monitoring locations.


  • Improve the DCWW AMP6 model to resolve high intensity storms

  •  Simulate wastewater asset flood risk and water quality issues (Undertake case study of a suitable Welsh estuary before elaborating the methodology for any region in Wales)

  • Assess future risk to DCWW assets and services

  • Develop compound flood loss projection


  • Isolate assets most at risk and understand how this risk may change in the future

  • Provide a basis for resilience planning and recovery

  • Help DCWW understand the environmental conditions that could cause the worst impact in terms of water quality



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