Task $4.$ Construction of storm hydrographs

Construct the storm hydrograph for each sub$-$catchment using rainfall excess $($task

and respective $t-$hr unit hydrographs generated above $($task $3).$ The $3$ storm

hydrographs you've generated are the responses at the outlet of respective sub$-$

catchments for the catchment in natural condition. Let us call it predevelopment

storm hydrographs.

Task $5.$ Post$-$development hydrographs

Your team will need to repeat the process, taking into account development of one

of the sub$-$catchments. For the catchment being developed, use the following.

Both initial loss and continuing loss will be reduced by $50\%.$

$15-$minute unit$-$hydrograph will have the following characteristics.

Peak discharge will increase by $30\%$

Time to peak will decrease by $10\%$

Time base will decrease by $20\%$