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Floods Causes, Effects, Prevention and Control Measures

Updated on April 8, 2017

Floods occur when excess water flows over land that is normally dry. The water does not flow through any definite channel but spread over land surface. The most common type of flood is when a river overflows its banks. This may occur in the wet reason in the tropics or in spring and summer in the temperate latitudes. Another common type of flood is when ocean water overflows its shoreline and spreads over the coastal plains.

Causes of Flood

1. Heavy rainfall during the wet season.

2. Rapid melting of ice in the watershed of rivers in the temperate latitudes.

3. Collapse of dams and river embankments.

4. Poor land drainage systems, e.g. lack of drainage ditches, blocked drainage ditches, and narrow, shallow drainage ditches. Bridges and culverts that are either too low or too narrow also add to poor drainage.

5. Low relief coupled with a high water table as in flood plains, river valleys and coastal plains.

6. Strong tidal waves, storm surges and hurricanes from the sea.

7. Unplanned urban residential, commercial and industrial development on the flood plains of rivers.

Effects of Flooding

1. Destructive of farmlands.

2. Destruction of life and property.

3. Destruction of transport and communication systems.

4. Displacement of population and settlements.

Flood Prevention and Control Measures

1. Practical watershed and management such as preventing deforestation and carrying out re-forestation where necessary. Control the use of land.

2. Construction of high walls and strong embankments and the reinforcement of levees along river bank.

3. Uses of breaks to retain run-off water over land surfaces.

4. Flood plains should be used for recreational or agricultural purposes only to avoid building houses on them.

5. Construction of flood containing dams with a capacity to retain large quantities of run-off water. Such reservoirs could be used as fish ponds, sources of water for irrigation and domestic purposes.

6. Stream channelisation to increase the capacity of the channel to carry more water.

7. There should be good land use planning and development control in both rural and urban centres.

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    • profile image

      Michael Ngozi 5 years ago

      You 've enlighten me more concerning flooding.THANKES A lot.

    • profile image

      Sahadeo 4 years ago

      you have provided good contain......thank you

    • profile image

      simon 3 years ago

      Rocking man!!!!!!!!!!!!!!!!!!!!!!!

    • profile image

      josh 3 years ago

      dis mad moi dai

    • profile image

      sidra 2 years ago

      thanx for such nice details

    • profile image

      rishika singh 2 years ago

      not BAd ... Its BKwaAs... vrY BKwaaS...

    • profile image

      emraan suqry 18 months ago

      thanks for such a nice detailed summary about floods as a hazard

    • profile image

      Simran 17 months ago

      Thanks for completing my presentation about flood.

    • profile image

      siddhant 15 months ago

      Very good info fr all students

    • profile image

      Erika 15 months ago

      Thanks very much for the knowledge on floodx

    • profile image

      ferns 14 months ago

      ok ha

    • profile image

      SAMUEL WHYTE 14 months ago

      THANKS BUT PLEASE ADD WHAT TO DO FOR THOSE WHO ARE AFFECTED BY IT

    • profile image

      Aldrich Lammaiza 13 months ago

      You help me complete my homework... Thanks!!!

    • profile image

      r44 12 months ago

      thank

    • profile image

      nayebare shallon 7 months ago

      some more information on causes

    • profile image

      Girish Katewa 6 months ago

      not in much detail

    • profile image

      alizeh 4 months ago

      It was helpful....thanx..!!

    • profile image

      Dosa 2 months ago

      Thank's a lot

    • profile image

      Oyelami Titilope 2 months ago

      thanks helped a lot in my assignment

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