Water is flowing in a 5.0-foot-wide rectangular channel with a quantity of 100 cfs. Plot a graph of Dn versus E by choosing a variety of flow depths Dn and for each flow depth computing the...

Water is flowing in a 5.0-foot-wide rectangular channel with a quantity of 100 cfs. Plot a graph of Dn versus E by choosing a variety of flow depths Dn and for each flow depth computing the corresponding value of E using Equation 4-3. Use the graph you plotted to determine critical depth in the channel.