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LESSONS LEARNED FROM PAST NOTABLE DISASTERS ALGERIA PART 1: FLOODS

LESSONS LEARNED FROM PAST NOTABLE DISASTERS ALGERIA PART 1: FLOODS. Walter Hays, Global Alliance for Disaster Reduction, Vienna, Virginia, USA . ALGERIA. ALGERIA: AFRICA—EURASIA COLLISION. NATURAL HAZARDS THAT HAVE CAUSED DISASTERS IN ALGERIA. FLOODS. GOAL: PROTECT PEOPLE AND COMMUNITIES.

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LESSONS LEARNED FROM PAST NOTABLE DISASTERS ALGERIA PART 1: FLOODS

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  1. LESSONS LEARNED FROM PAST NOTABLE DISASTERSALGERIAPART 1: FLOODS Walter Hays, Global Alliance for Disaster Reduction, Vienna, Virginia, USA 

  2. ALGERIA

  3. ALGERIA: AFRICA—EURASIA COLLISION

  4. NATURAL HAZARDS THAT HAVE CAUSED DISASTERS IN ALGERIA FLOODS GOAL: PROTECT PEOPLE AND COMMUNITIES WINDSTORMS/DUSTSTORMS EARTHQUAKES HIGH BENEFIT/COST FROM BECOMING DISASTER RESILIENT LANDSLIDES ENVIRONMENTAL CHANGE GLOBAL CLIMATE CHANGE

  5. Natural Phenomena that Cause Disasters Planet Earth’s atmospheric, hydrospheric, and lithospheric interactions cause FLOODS

  6. A DISASTER is --- --- the set of failures that overwhelm the capability of a community torespond without external help  when three continuums: 1)  people, 2) community (i.e., a set of habitats, livelihoods, and social constructs), and 3) complex events (e.g., floods, earthquakes, ...) intersect at a point in space and time.

  7. Disasters are caused by single- or multiple-event natural hazards that, (for various reasons), cause extreme levels of mortality, morbidity, homelessness, joblessness, economic losses, or environmental impacts.

  8. THE REASONS ARE . . . • The community is UN-PREPARED for what will happen

  9. THE REASONS ARE . . . • When it does happen, the functions of the community’s buildings and infrastructure are UNPROTECTED with the appropriate codes and standards

  10. THE REASONS ARE . . . • The community has NO RELIABLE WARNING SYSTEM in place

  11. THE REASONS ARE . . . • The community LACKS THE CAPACITY TO RESPOND to the full spectrum of emergency situations.

  12. THE REASONS ARE . . . • The community is INEFFICIENT during recovery and reconstruction because it HAS NOT LEARNED from either this experience or the prior experiences.

  13. TOWARDS FLOOD DISASTER RESILIENCE

  14. HAZARDS • INVENTORY • VULNERABILITY • LOCATION • PREPAREDNESS • PROTECTION • EARLY WARNING • EMERGENCY RESPONSE • RECOVERY and • RECONSTRUCTION FLOOD RISK POLICY OPTIONS ACCEPTABLE RISK RISK UNACCEPTABLE RISK FLOOD DISASTER RESILIENCE DATA BASES AND INFORMATION ALGERIA’S COMMUNITIES HAZARDS: GROUND SHAKING GROUND FAILURE SURFACE FAULTING TECTONIC DEFORMATION TSUNAMI RUN UP AFTERSHOCKS

  15. HAZARDS EXPOSURE VULNERABILITY LOCATION ELEMENTS OF FLOOD RISK RISK

  16. HIGH POTENTIAL LOSS EXPOSURES IN A FLOOD A community’s people, property, essential and critical infrastructure, business enterprise, and government centers can be at high risk.

  17. CAUSES OF RISK LOSS OF FUNCTION OF STRUCTURES IN FLOODPLAIN INUNDATION INTERACTION WITH HAZARDOUS MATERIALS STRUCTURAL/CONTENTS DAMAGE FROM WATER FLOODS WATER BORNE DISEASES (HEALTH PROBLEMS) CASE HISTORIES EROSION AND MUDFLOWS CONTAMINATION OF GROUND WATER

  18. WHAT WILL HAPPEN?FLOOD HAZARDS (AKA THE POTENTIAL DISASTER AGENTS)

  19. FLOOD HAZARDS • TOO MUCH WATER DISCHARGED WITHIN THE DRAINAGE SYSTEM TO BE ACCOMMODATED IN THE REGIONAL WATER CYCLE • INUNDATION • EROSION • SCOUR • MUDFLOWS

  20. LESSONS LEARNED ABOUT DISASTER RESILIENCE ALL FLOODS PREPAREDNESS FOR ALL OF THE LIKELY FLOOD HAZARDS IS ESSENTIAL FOR DISASTER RESILIENCE

  21. LESSONS LEARNED ABOUT DISASTER RESILIENCE ALL FLOODS PROHIBITING THE CONSTRUCTION OF BUILDINGS AND LIFELINE SYSTEMS IN THE FLOODPLAIN IS ESSENTIAL FOR DISASTER RESILIENCE

  22. LESSONS LEARNED ABOUT DISASTER RESILIENCE ALL FLOODS TIMELY EMERGENCY RESPONSE IS ESSENTIAL FOR DISASTER RESILIENCE

  23. SOME OF ALGERIA’S NOTABLE FLOODS NOVEMBER 10, 2001 OCTOBER 1, 2008

  24. NOVEMBER 10, 2001 IN A TIME OF POLITICAL CHANGE, DEVASTATING FLOODING FOLLOWED 2 YEARS OF DROUGHT

  25. ELEMENTS OF THE DISASTER • A month's rain fell in 24 hours, the heaviest recorded rainfall in 20 years, causing devastating floods and leaving over 600 dead.

  26. ELEMENTS OF THE DISASTER • In Algiers where a wall of water moved down the steep, narrow streets of the slum district of Bab al-Oued,.more than 500 died in the mass of mud, collapsed buildings and mangled vehicles left by the storm.

  27. October is typically a bad month for heavy rainfall and floods in Algeria

  28. FLOODING IN GHARDAIA PROVINCE, ALGERIA 700 KM (435 MILES) SOUTH OF ALGIERS OCTOBER 1, 2008

  29. GHARDAIA, ALGERIA FLOODING; OCT 1, 2008

  30. Thirty dead Fifty injured Bridges and roads badly damaged IMPACTS AFTER SEVERAL DaYS OF HEAVY RAIN

  31. THE NEXT FLOOD IS INEVITABLE • BUT, FLOOD DISASTER RESILIENCE IS NOT AN IMPOSSIBLE DREAM!

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