The paper assesses the potential for adopting sustainable urban drainage systems (SUDS) in Myanmar to mitigateflood risks related to urbanisation. Fieldwork in commercial and industrial developments and informal settlementswas undertaken to identify flood problems, understand causes and assess the potential for SUDS in Yangon.Hydrological modelling was used to assess the benefits in terms of flood risk mitigation from a quantitativeperspective and engagement with key stakeholders facilitated a consideration of the practical implications of SUDSadoption. The results demonstrate that on-site source control technologies can play a key role in mitigating floodrisks for storm events with return frequencies of one in 10 years. Based on simulation results, the existing situationshows extensive flooding with 45% of the area flooding to a depth of 0.25 m, the SUDS scenario reduces this from30 to 15% of the modelled catchment area. SUDS need to be adopted at scale for the benefits to be realised but theadoption of SUDS in existing developments is seen to be constrained due to practical and financial considerations.Therefore, green field sites offer the greatest potential for SUDS and a three-stage procedure based on flood riskand drainage impact assessments were developed to be incorporated in the existing planning applications process.
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