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TRANSCRIPT
08/11/2009
Dr. Mario Oertel
Senior Researcher
Dr. Daniel B. Bung
Senior Researcher
Prof. Dr. Andreas Schlenkhoff
Head of Chair
Hydraulic Engineering Section
Civil Engineering Department
Bergische University of Wuppertal
+49 (0)202 439 4133
www.hydro.uni-wuppertal.de
Flash Flood Awareness and PreventionQuestionnaire Campaigns in four German cities
Wuppertal – Dortmund – Cologne– Düsseldorf
Slide 2Flash Flood Awareness and Prevention 08/11/2009
Contents
• About flash floods• Questionnaire campaigns• Results• Conclusions• Summary
Slide 3Flash Flood Awareness and Prevention 08/11/2009
About flash floods
• Can occur at any time and place
• 2 main types: – flat land flash flood – mountainous flash flood
• Extreme storm events, convection by:– orographic barrier– front– insolation
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 4Flash Flood Awareness and Prevention 08/11/2009
About flash floods
Slide 5Flash Flood Awareness and Prevention 08/11/2009
Questionnaire campaigns
• Date and time– Wuppertal: 17.03.2009, 09:00 to 14:00– Dortmund: 18.03.2009, 09:00 to 13:30– Cologne: 19.03.2009, 09:00 to 13:00– Düsseldorf: 19.03.2009, 13:30 to 16:30
• Locality– Wuppertal: inner city Elberfeld, inner city Barmen– Dortmund: inner city, Platz von Netanya– Cologne: inner city, Schildergasse– Düsseldorf: inner city, Heinrich-Heine-Allee
• Collected questionnaire forms– all: 339– Wuppertal: 135– Dortmund: 60– Cologne: 72– Düsseldorf: 72
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 6Flash Flood Awareness and Prevention 08/11/2009
Questionnaire campaigns
• Block I: general questions to habitation (5 questions)
• Block II: general questions to natural phenomena (7 questions)
• Block III: specified questions to floods and flash floods (10 questions)
• Block IV: general questions to questionnaire campaigns (2 questions)
• Block V: personal questions (6 questions)
= 30 questions
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 7Flash Flood Awareness and Prevention 08/11/2009
Questionnaire campaigns
• North Rhine-Westphalia– located in the west of Germany– more than 1,000 inhabitants per km²– river Rhine and Wupper
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 8Flash Flood Awareness and Prevention 08/11/2009
Results
– 16 % already affected by a flash flood– 44 % choose resulting protection measures (flaps, pumps etc.)
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 9Flash Flood Awareness and Prevention 08/11/2009
Results
– damage amounts around 1,000 EUR, some large amounts– 58 % of damages not insured– 50 % think they can be affected or already been affected
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 10Flash Flood Awareness and Prevention 08/11/2009
Results
– 45 % know affected people
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 11Flash Flood Awareness and Prevention 08/11/2009
Results
– term and meaning of flash floods seems to be unknown (shown by personal consultations)
– term and meaning of river floods is well known
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 12Flash Flood Awareness and Prevention 08/11/2009
Results
– 65 % don’t know about informative meetings concerning flash floods– 57 % desire more informative meeting and information materials
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 13Flash Flood Awareness and Prevention 08/11/2009
Conclusions
• Required preventions measures:
1.Clear definition of the term “flash flood” and connection to flood events caused by heavy rainfalls, and
2.Arrangement of informative meetings and general information prevention measures (e. g. flyer, documentations etc.) to prepare people for possible events.
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 14Flash Flood Awareness and Prevention 08/11/2009
Summary
• All results for all 30 questions can be found…
…in the full paper or underwww.hydro.uni-wuppertal.de
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary
Slide 15Flash Flood Awareness and Prevention 08/11/2009
Summary
• Questionnaire campaigns in 4 regional cities were arranged,
• results show many flash flood affected people and many people knowing affected persons,
• a main deficit in the term flash flood can be detected,
• there are no informative meetings and no information materials to inform the public about flash flood existence and effective prevention measures.
Thank you for your kind attention. Dr.-Ing. Mario Oertel
Hydraulic Engineering SectionBergische University of Wuppertal
Fon: +49 (0) 202 439 4133E-Mail: [email protected]
About flash floods
Questionnaire campaigns
Results
Conclusions
Summary