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alluvial fan.

kenalim has some suitable issues, additionally a million) look up turbulent and linear flow, bigger and decrease sections respectively. bigger valleys have a tendency to small catchments with rapid runoff and so top flood after rain arrives straight away and is long previous, decrease valleys have bigger catchments and characteristic slower run off, longer lag situations, and are extra stricken by different factors eg water might nicely be stored interior the valley if the river sediments are sandy quite than clays. 2) bigger is erosional and for this reason downcutting ie deep relative to width, decrease is extensive in comparison intensity. 3) bigger extremely quickly, decrease meandering (relies upon on sediment carried- see under) 4)think of approximately sediment style being moved interior the flow (very coarse - saltation, very advantageous - suspension). 5) additionally you may take the view that the lively channel of the decrease valley isn't the completed equipment - the valley is the completed equipment and all the sediment is slowly being moved oceanwards, it merely seems interior the human timeframe as though merely sediment interior the lively channel is shifting. desire this helps