Problem $5.$

Follow Example $5\mathrm{.}2\mathrm{.}2$ but with a channel width of $30$ ft $.$ Use an Excel spreadsheet to to calculate and graph a family of specific energy curves when $Q=0,50,100,$ and $300$ cfs $.$ Make y range from $0\mathrm{.}30$ to $4\mathrm{.}0$ ft $,$ with intervals similar to those shown in Table $5\mathrm{.}2\mathrm{.}1.$ For each flow rate, calculate the critical depth and show how the critical depth matches your graph.