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Floods

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stefan
10 diapositives · 518 Views · Aug 01, 2014

Floods. CERT Basic Training Hazards. When Floods Occur. Any time a body of water rises to cover what is usually dry land One of most common hazards 75% of Federally declared disasters May be local or widespread May develop slowly or fast. Causes of Floods and Flood Damage. Heavy rain

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Floods
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  1. Floods CERT Basic Training Hazards

  2. When Floods Occur • Any time a body of water rises to cover what is usually dry land • One of most common hazards • 75% of Federally declared disasters • May be local or widespread • May develop slowly or fast CERT Basic Training Unit 1: Floods

  3. Causes of Floods and Flood Damage • Heavy rain • Spring snowmelt • Dam and levee failure • Low absorption or no soil percolation • Business and residential growth in flood areas CERT Basic Training Unit 1: Floods 2-2

  4. Factors Contributing to Flooding • Rainfall intensity • Rainfall duration • Topography • Soil conditions • Ground cover CERT Basic Training Unit 1: Floods 2-3

  5. Flood Hazards • Heavy rainfall exacerbates problems with: • Runoff • Absorption • Flood-control measures • Ravine flooding can inundate downstream areas • In rocky and heavily paved areas, lack of absorption can cause flash flooding CERT Basic Training Unit 1: Floods

  6. Flood Risks • Most communities have some risk of flooding • Damage increases with development in: • Coastal areas • Floodplains CERT Basic Training Unit 1: Floods 5

  7. Flood Preparedness • Know flood risk in area • Prepare flood evacuation plan • Obtain flood insurance if living in floodplain • Keep important documents in water-proof box • Check portable radio for current information and emergency messages CERT Basic Training Unit 1: Floods 6

  8. Protecting Property • Elevate furnace, water heater, and electric panel • Move furniture and other items to higher level • Install check valves • Waterproof basement floor and walls CERT Basic Training Unit 1: Floods 7

  9. If You Must Evacuate • Do not walk, swim, or drive through flood waters • Stay off bridges over fast-moving water • Keep away from waterways • Pay attention to barricades • Avoid storm drains and irrigation ditches • Keep family together CERT Basic Training Unit 1: Floods 8

  10. After a Flood • Stay out of flooded areas • Reserve telephone for emergencies • Avoid driving, except in emergencies • Wait for authorities to issue message that it is safe to return • Be aware that snakes and other animals may be in your house CERT Basic Training Unit 1: Floods 9