1. The Application of SUDS to a High Density Urban Environment using Singapore as a Case Study Simon Chu and Martin Mansell School of Engineering and Science University of Paisley

2. Singapore

3. Typical Large Flood Channel

4. Typical Reservoir

5. Water Consumption

6. Possible SUDS Applications  Rainwater Storage/Re-use  Permeable Pavements  Swales?  Ponds/Basins ?

7. Typical Residential Neighbourhood

8. Area Around Housing Block driveway and car parking High Rise Housing Block pavement grass road

9. Rainwater Tank Model overflow rainwater consumption

10. Rainwater Tank Reliability Reliability (%) Consumption Litres/Person /day Tank Vol = 10 m 3 Tank Vol = 30 m 3 Tank Vol = 45 m 3 2049.268.475.5 4026.040.347.6 6020.028.830.7 8016.018.023.0

11. Reservoir Model Runoff (O) Infiltration (I) Rainfall (R) Storage (S) Depth (D)

12. Output from Model

13. Green Roofs

14. Conclusions Grey-water high internal cost low treatment cost Potable water low internal cost high treatment cost Permeable Paving areas of specific flood risk would be cost effective for new build Surface Storage health risks