$5\mathrm{.}3\mathrm{.}2$ A $2\mathrm{.}45-m$ wide rectangular channel has a bed slope of $0\mathrm{.}0004$ and Manning's roughness factor of $0\mathrm{.}015.$ For a discharge of $2\mathrm{.}83\frac{m^3}{sec},$ determine the type of water surface profile for depths of $1\mathrm{.}52m,0\mathrm{.}61m,$ and $0\mathrm{.}30m.$