Determine the flow depth and spread for a triangle gutter with a design discharge of $0\mathrm{.}097$ m$3/$s$,$ with a longitudinal bottom slope of $0\mathrm{.}015,$ cross slope of $0\mathrm{.}025,$ and a Manning roughness coefficient of $0\mathrm{.}015.$ Assume Kn$=1\mathrm{.}2$ m$3/$s