A $2\mathrm{.}45-$m wide rectangualr channel with a discharge of $2\mathrm{.}83,$m$3/$sec$.$ has a bed slope of $0\mathrm{.}0003$ and Manning's roughness factor of $0\mathrm{.}015.$ What is the type of water surface profile for depths of $1\mathrm{.}52$ m$,0\mathrm{.}061$ m$,$ and $0\mathrm{.}30$ m