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<br /> <br />pper Basi <br /> <br />Contributing Processes <br /> <br />a. Sheet water runoff <br />b. Moderate erosion <br />c. Large water volume <br /> <br />~ <br /> <br />~. "'ciS in <br />9 Wilt <br />er d' <br />~ lSCh <br />ilrge <br /> <br />Fi gure 5 <br /> <br />Intense Rainfall Over Entire Basin <br /> <br />ower Basi <br /> <br />Contributing Processes <br /> <br />a. <br />b. <br />c. <br />~ <br />~. <br /> <br />lands 1 ides <br />Debris avalanches <br />Channel blockage <br />r\...h....;... +11"\1.1 +I"\...."':::!.+.;......n <br />V~lJl'J I,un 1\..11 "'''''''' 'VII <br /> <br />I <br />I <br />I <br />, <br />i <br />I <br />I <br />I <br />~ <br /> <br />e. <br /> <br />Entrainment of channel <br />lag depos ~i ts <br /> <br />Debri s Fan <br /> <br />~ontributing Process~~ <br /> <br />,,~ <br />'-l'{ <br />rein <br />~"e I <br />J-'/. <br />O's qrge <br />chq Oel. <br />rg, <Jrj <br />e s....,.. <br />I'loly <br /> <br /> <br />a. Debris-flow deposition <br />b. Sedimentation and impact <br />c. Flood deposition and erosion <br />d. Shifts of debris flows across <br />fan <br /> <br />Deceleration and <br />Deposition of Flows <br /> <br />Figure 5 summarizes the discussion of debris-flow formation in the basins <br />studied at Glenwood Springs. Large water volumes from the upper basins <br />meet debris in the lower channels. The debris is then mobilized because of <br />the lubricating effect of the upper flood waters and continues down the channels <br />onto the debris fans as debris-flow surges followed by flood water. <br /> <br />