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<br />50 <br /> <br />i <br /> <br />sedimp.~t is moved, convergence and divergence of fl~J occur resulting in <br />the scouring of pools and the deposition of the scour in riffles" <br />Therefore, major forms of scour arid deposItion in alluvial stream channels <br />are apparently produced at relati"ely high channel form1.ng flows and are <br />modified only at low flow. <br /> <br /> <br />.~.' <br />, "'"' <br />, -." <br />, ' <br />, , <br />,"-c---.&o---o-----' <br /> <br />""--+--'-----."7 <br />..........- ~ <br />"----1 <br />0-..... c.-_. ~'...... ' <br />1- t..,_ ~- _,,. -4- _,of" --., <br /> <br />~~TAfTl~' <br />, ' <br />-0-..... <br /> <br />.A <br /> <br />=..... <br />.~)I _Fl.l <br />~~"'iII: <br /> <br />1'- 1':::/1 <br /> <br />! 0.-_' i c-..._, ~ <br />,---- --- - <br />0'0',.., , ........ <br /> <br />C COM'o'!:It<;.-..r now <br />D DlVEI'G[~' '-LOW <br />!. _ _ _ _ .1." QtOSs SlCTION LIME <br /> <br />............., "" <br /> <br />'7 _f[lt SU","Act <br />~ <br /> <br />Figure 18 .Basic c"'anrwl 110'1'1'101091 fo" the <br />...nd~"in9 rher with iI gruel bed. <br /> <br />Fro1ll E. A. Keller. 1980. The fl~vial system: selected observntlons. <br />pp. 39-46. In A. Sands (ed). Riparian Forel'U 1n California.. their <br />ecolbgy and conservation: A S}'lll?oe1UlIl. Pub. !lo. 4101. "~ricuhure <br />Sciences Public.dons. U. of CalHornia, Bed:!ey, CA 94720. <br />