Given the $30$ minute interval data for direct discharge and rainfall intensities on a $1\mathrm{.}0^2$ watershed. The rainfall in the first $30$ minutes is lost as initial abstraction

Time$($minutes$)$:$0306090120150180210240$

Rainfall Intensity $($mm$/$hr$)$: $01492000$

Direct Discharge $($mm$^3/$hr$)$: $01\mathrm{.}00$E$+056\mathrm{.}00$E$+051\mathrm{.}30$E$+062\mathrm{.}10$E$+067\mathrm{.}00$E$+053\mathrm{.}00$E$+051\mathrm{.}00$E$+050$

I. Determine direct discharge volume for the entire storm

II$.$ Plot hyetograph for excess rainfall with axes labeled