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Factors affecting discharge
 

Factors affecting discharge

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    Factors affecting discharge Factors affecting discharge Presentation Transcript

    • What is the issue here?
      • A FLOOD WARNING HAS BEEN ISSUED BY THE ENVIRONMENT AGENCY FOR RIVERSIDE PROPERTIES IN AN ESSEX TOWN AFTER HEAVY OVERNIGHT RAIN.
      • FLOODING IS EXPECTED IN THE RIVERSIDE AREAS OF CHELMSFORD TOWN CENTRE, INCLUDING THE CRICKET GROUND AND COURT INDUSTRIAL ESTATE.
      • RESIDENTS ARE ADVISED TO ACT IMMEDIATELY TO PROTECT PROPERTY.
      • SOME MOTORISTS HAD TO BE RESCUED FROM THEIR CARS AFTER ROADS FLOODED FOLLOWING THE HEAVY OVERNIGHT RAIN.
      • http://www.bbc.co.uk/news/uk-england-essex-12214641
    • Water on the Land.
    • The Amount of water in a river fluctuates due to a number of reasons….
      • Factors affecting discharge.
      Rainfall temperature Previous weather conditions relief Rock type Land use
    • How do geographers measure responses to rainfall?
      • Hydrographs are graphs which show river discharge over a given period of time and show the response of a drainage basin and its river to a period of rainfall.
      • A storm hydrograph shows how a river's discharge responds following a period of heavy rainfall. On a hydrograph, the flood is shown as a peak above the base (normal) flow of the river.
    • A Storm Hydrograph.
    •