Blue-Green Cities Project

The Blue-Green Cities project is a multi-disciplinary research project that assesses the design, implementation and community resilience of Blue-Green cities. A Blue-Green city incorporates a holistic relationship between blue aspects of a naturally-oriented water cycle, and sustainable green infrastructure that contribute to the city’s amenities. This Blue-Green approach aims to meet the requirements of Sustainable urban Drainage Solutions (SuDS), without compromising the interaction between these Blue and Green assets.

Factsheets relating to the core research elements of this project are available at the bottom of this page.

Research topics encompassed within this project include:

  • Communications and uncertainty
  • The influence of Sustainable urban Drainage Systems on flow and sediment dynamics
  • Sediment, debris and ecosystem benefits of Blue-Green infrastructure and networks
  • Blue-Green infrastructure in the context of Natural Flood Management
  • Public behavioural responses to Blue-Green infrastructure
  • Blue-Green Cities systems interaction
  • Flood Footprint Assessment, and
  • Blue-Green City Multiple Benefits.

Research into the case study analysis of Portland, Oregon has been conducted as part of this project to assess whether this city can be classified as a Blue-Green city. Portland began a “Grey-to-Green” transformation since in the early 2000’s. More information on this study are available here.

The project has also resulted in the generation of useful online tools to aid in modelling and cost benefit analysis calculations. The CityCat 2D Flood Modelling tool allows modelling of surface water flood analysis, modelling and visualisation. In addition to this tool, the Multiple Benefits Evaluation tool can analyse the various benefits of SuDS both spatially and contextually.

For more information on this project and its findings, please visit the Blue-Green Cities website.

Below are some fact sheets that are available on the Blue Green Cities Project:

Barriers to wide adoption of Blue-Green infrastructure

Benefit intesites, profile and dependencies

Biodiversity-nutrient cycling, pollution control & detoxification

Community preferences on Blue-Green infrastructure

Flood foot print assessment

Functional complexity of SuDS

Learning and action alliances: Defining and establishing

Participatory modelling: Hebdon Bridge

Participatory modelling: Southwell

Relational complexity of SuDS

River habitat Scoring

River restoration for flood alleviation

Sediment Movement Through Swale

Sediment, debris and habitat benefits

SuDS and grey infrastructure under non-flood conditions


Image: Green Roof, Vancouver BC by NNECAPA Photo Library | CC BY 2.0