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CSV File Environment Agency
  • Created 5 months ago

    Daily Areal Rainfall Calculations

    Environment Agency
    Areal rainfall is calculated at a daily timestep for 5 areal units which cover London using the Soil Moisture Model developed and run by the Environment Agency. For each areal unit, the areal rainfall and soil moisture deficits (SMDs) are calculated. Areal rainfall – This is calculated using rainfall data collected at one or more rain gauges situated within each areal unit. This is then averaged and weighted across each areal unit. S...
  • Updated 5 years ago

    Properties in Floodplain

    Environment Agency
    Number of properties in a floodplain and those with a significant risk of flooding. NAFRA - National Flood Risk Assessment. There are 3 risk categories: (i) low - 0.5% (1 in 200) chance of flooding each year or less. (ii) moderate - 1.3% (1 in 75) chance or less but greater than 0.5% (1 in 200) chance in any year. (iii) significant - greater than 1.3% (1 in 75) chance in any year. This dataset was updated in 2008. The GLA are yet ...