A V$-$notch weir is to be designed to measure the flow rate in an irrigation channel. Under design

conditions, the flow rate in the channel is $0\mathrm{.}30$ m$3/$s and the depth of flow is $1$ m$.$ Design the weir

with a top width of $1$ m $($that is$,$ find slope, H$,$ and Hw$)$ for the V$-$notch weir.