Reply To: Apply direct and indirect impervious fractions

[Benson Liu]

Hi Dinesh,

I can’t say for sure what is the ‘best’ way to model this as it is dependent on your catchment but one option is to separate out each surface into its own subarea. This way RORB will not average the losses as there is only one surface per subarea but this may be a lot of work.

Another way is to reduce your initial loss for the frequent and short duration events such that you do not get 0 rainfall after losses are accounted for but you would need to think about how you reduce your losses and if it is reasonable to do so.

Kind regards,

Benson