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LID Placement and Performance

hello all.i run a model of 41 sub catchments and want to see the runoff Peaks from 24 years simulated rainfall data.finally i got two sub catchs(S80 & S81) result around  4cms.and i had to do LID placement in both catchs and i do place 4 raingarden, 4 bio-retention, infiltration trench and 6 Permeable pavemet in which all tend to cover the % of imperv. with in the subcatchments but finally when i run it again i found no change at all. what do you think is missed?? 

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  • So do i....like that...when i used rain barrel for my LID Control....I thought because it's area of each unit (sq ft or sq m) in your lid too small...

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