1 / 30

Angela Peck, 2008

Angela Peck, 2008. A Web-Based Flood Information System. Presented by - Angela Peck. Department of Civil and Environmental Engineering The University of Western Ontario London, Ontario, Canada. Angela Peck, 2008. Acknowledgments. Advisor: Prof. Slobodan P. Simonovic

stesha
Download Presentation

Angela Peck, 2008

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Angela Peck, 2008

  2. A Web-Based Flood Information System Presented by - Angela Peck Department of Civil and Environmental Engineering The University of Western Ontario London, Ontario, Canada Angela Peck, 2008

  3. Acknowledgments Advisor: Prof. Slobodan P. Simonovic Project Team: Subhankar Karmakar & Jordan Black Assistance from – David Gray, Mark Helsten, and Steve Zuppa Upper Thames River Conservation Authority, Statistics Canada, Canadian Homebuyers Guide,Serge A. Sawyer map library & the IDLS library at The University of Western Ontario Angela Peck, 2008

  4. Presentation Outline • Introduction • Flood Risk-Vulnerability Analysis • Objectives of the study • Study area • Flood Risk Descriptors • Hazard Analysis • Vulnerability Analysis • Exposure Study • Web-based Flood Information System • Conclusion Angela Peck, 2008

  5. Introduction Hazard • 100yr floodlines • - 250yr floodlines Vulnerability • Physical • Economic • Infrastructural • Social Risk Exposure • Land use characteristics • Soil characteristics Angela Peck, 2008

  6. Objectives • To integrate suitable vulnerability indicators into an overall vulnerability index • To consider Forward Sortation Areas (FSAs) for spatial distribution in risk evaluation • To consider the spatial impact of flooding of • - Major transportation routes and road bridges • - Critical facilities (schools, hospitals, and fire stations) • To develop a web-based tool for flood risk-vulnerability analyses • To develop an analysis tool for calculation of flood risk as a function of land use Angela Peck, 2008

  7. Study Area Upper Thames River Watershed Simonovic et al., 2007 Angela Peck, 2008

  8. Study Area Forward Sortation Areas (PSEPC, 2005) Angela Peck, 2008

  9. Study Area Geographic Information Systems Data • Upper Thames River Conservation Authority • Statistics Canada • The Ontario Fundamental Dataset • Surficial Geology of Southern Ontario dataset • Route Logistics Numerical Data • Statistics Canada Angela Peck, 2008

  10. Hazard • 100yr floodlines • - 250yr floodlines Risk Angela Peck, 2008

  11. Hazard Analysis The study utilizes: 100 & 250-year flood lines 100-yr Flood Line for London Area 100-yr Flood Line for N6G Angela Peck, 2008

  12. Hazard • 100yr floodlines • - 250yr floodlines Vulnerability • Physical • Economic • Infrastructural • Social Risk Angela Peck, 2008

  13. Vulnerability Analysis Overall vulnerability Aggregation Economic Infrastructure Physical Social Vulnerability Indicators Population over 65 yrs old Single parents Etc. Angela Peck, 2008

  14. INFRA- STRUCTURE COMPONENTS SOCIAL COMPONENTS ECONOMIC COMPONENTS PHYSICAL COMPONENTS Layer 1 Layer 1 Layer 1 Layer 1 Layer 2 Layer 2 Layer 2 Layer 2 Layer S Layer I Layer P Layer E Physical Vulnerability Infrastructure Vulnerability Economic Vulnerability Social Vulnerability Flood Vulnerability Vulnerability Analysis Process for deriving flood vulnerability using GIS Subhankar, 2007 Angela Peck, 2008

  15. Vulnerability – Critical Facilities Critical Facilities Schools, Hospitals, Fire Stations Angela Peck, 2008

  16. Vulnerability – Critical Facilities Degree of Importance (DI) Red (high influence) – 1.0 Orange (medium) – 0.75 Yellow (low) – 0.20 White (no influence) – 0.0 Angela Peck, 2008

  17. Vulnerability – Critical Facilities Critical Facilities Schools, Hospitals, Fire Stations Degree of Importance (DI) Red (high influence) – 1.0 Orange (medium) – 0.75 Yellow (low) – 0.20 White (no influence) – 0.0 Angela Peck, 2008

  18. A2 A1 G2 G1 ---- Grid line Ak Area under kth grid cell Gkkth grid cell with over all degree of importance, ODIk A3 A4 G4 G3 A5 A6 G5 G6 Vulnerability – Critical Facilities Angela Peck, 2008

  19. Vulnerability – Critical Facilities The Overall DI (ODI) for a grid cell of ith FSA = Procedure used for standardization Angela Peck, 2008

  20. Vulnerability Analysis Avg. Physical Vulnerability Avg. Economic Vulnerability Angela Peck, 2008

  21. (.... Contd.) Vulnerability Analysis Avg. Infrastructure Vulnerability Avg. Social Vulnerability Angela Peck, 2008

  22. Vulnerability Analysis Overall Vulnerability + + + = Angela Peck, 2008

  23. Hazard • 100yr floodlines • - 250yr floodlines Vulnerability • Physical • Economic • Infrastructural • Social Risk Exposure • Land use characteristics • Soil characteristics Angela Peck, 2008

  24. Exposure Analysis Impact of land use on ‘Exposure’ • 7 different categories of land use (DI): • 1. Water body (0.1) • 2. Parks and recreational (0.2) 3. Open space (0.3) • 4. Government and institutional (0.7) • 5. Commercial (0.8) • 6. Residential (0.8) • 7. Resource and industrial (0.8) Angela Peck, 2008

  25. Exposure Analysis Impact of soil permeability on ‘Exposure’ • 4 different categories of soil type: • 1. Low (0.8) • 2. Low-medium (0.6) • 3. Variable (0.5) • 4. High (0.3) Decreasing chance of accumulation of water on the soil surface Angela Peck, 2008

  26. Flood Risk Assessment Risk Components Vulnerability Hazard Exposure Physical Descriptors -biological sensitivity • Land Use • -commercial • residential • resource & industrial • government & institutional • open area • parks & recreational • Flood Lines • -100 yr • 250 yr • Economic Descriptors • Structural • Soil Drainage Characteristics • (Permeability) • -low • low-medium • variable • high • Infrastructure Descriptors • -critical facilities • transportation • Social Descriptors • - age • differential access to resources • household structure • social status • ethnicity • economic Risk Indices General Public Web-based Information System Decision Makers Users Professionals Web-based Flood Information System Angela Peck, 2008

  27. Web-based Flood Information System Screenshot of the home page of the web-based flood information system Angela Peck, 2008

  28. Type of stakeholders Decision-makers Water management professionals General public Web-based Flood Information System Angela Peck, 2008

  29. Conclusion • New method in evaluation of indices are introduced in the infrastructure flood vulnerability analysis • The impact of inundation of critical facilities on flood vulnerability • An ‘analysis tool’ is provided for estimation of flood risk • This flood risk information is provided uniquely to different users • Procedures can be applied to other locations and on multiple scales • Dynamic analyses are desirable Angela Peck, 2008

  30. Thank you Resources for Technical Details http://www.eng.uwo.ca/research/iclr/fids/publications/products/ReportBlack2.pdf http://www.eng.uwo.ca/research/iclr/fids/publications/products/ReportPeck2.pdf Angela Peck, 2008

More Related