flood

• Flood


  Natural occurrence where usually dry land gets submerged underwater
• What causes flooding


  • Excessive rains
  • Changing ground cover
  • River / fluvial overflow
• Sheet flooding


  • Bodies of water overflooding banks
  • Develops slowly and lasts for a while
  • Occurs more in flood plains
• Coastal flooding


  • Sea water going to dry land
  • Made worse if wind carries rain
  • Seawater from storm surge can flow inland
• Storm surge


  Rising water associated with low pressure weather systems
• Storm surge


  • Like coastal/tsunami flood
  • Severity is affected by shallowness/orientation of water body
• Flash flooding


  • Occurs within short time
  • Result of heavy rain
  • Most destructive
• Urban flooding


  • Takes slightly longer to develop and can last for a day or two
  • Very destructive but not surprising
• Flood prevention


  • Clean drains
  • Clean river
  • Make vegetation
  • Reforestation
  • Town planning