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Table 1

Infiltration/water loss rates per surface type

Area typeInfiltration (mm/h)
Green (any other) 12 + (rainfall reduction of 12 mm/h for pluvial cases) 
Roads tracks and paths 19 
Buildings 28 
Area typeInfiltration (mm/h)
Green (any other) 12 + (rainfall reduction of 12 mm/h for pluvial cases) 
Roads tracks and paths 19 
Buildings 28 
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