Geography AS Case Studies

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Flood Management in an MEDC: Mississippi River (1993 flood)

Location: The Mississippi river is located in USA and flooded between April-October 1993 covering a total area of 30,000miles squared.

About: The river basin is the 5th largest in the world and the third largest river in the world. The floodplain is 200km wide at its widest point.

Causes:

Physical

Human

  • The soil was saturated from the usual spring rain.

  • The atmospheric conditions bought more rain for a further three months (May, June, and July.) :

  • jet stream swung south bringing cool dry air

  • warm air moved north causing thunderstorms

  • two high pressure systems developed blocking movement of thunderstorms.

  • Urbanisation of the

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