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<br />. . . <br />Channel Depth (:~) Type of Symbol Type of Flow Form of Profile <br />Slope Relations Profile <br />Horizontal ~ <br />5=0 Yc> Y + Backwater H3 Supercritical <br />YN= 00 ~ <br />Critical ~L_ <br />5N = 5c Yc = YN > Y + Backwater C3 Supercritical 4 -~--"'///4-~>> <br />YN = Yc <br />Mild ~ <br />0<5 < 5c YN > Yc > Y + Backwater M3 Supercritical <br /> M3 Y -- <br /> N Yc <br />Steep ~~~ <br />5>5c>0 Yc>Y>YN Dropdown 52 Supercritical <br /> <br />Yc > YN >Y <br /> <br />+ <br /> <br />Backwater <br /> <br />52 <br /> <br />Supercritical <br /> <br /> <br />8<0 <br />YN = 00 <br /> <br />Yc > Y <br /> <br />+ <br /> <br />Backwater <br /> <br />A3 <br /> <br />Supercritical <br /> <br />--~Jj <br />R/7# c ~///#///////#7/#'# <br /> <br />Adverse <br /> <br />FIGURE 1 <br />EXAMPLES OF SUPERCRITICAL <br />WATER SURFACE PROFILES <br /> <br />