Given in the figures below are different river types. Describe how the rivers are formed starting from straight channels in the mountain area, then the braided river, the meandering river, down to the alluvial fan in the delta. Explain in terms of sediment load and size as well as flow discharge and slope. Slope Range Section Plan View Rosgen's Stream Classification System ype Aa+ A B C D DA E F G field guide to rivers. Drawing on data from more than 1000 waterways, Rosgen Duped streams into nine major types. DEPOSITIONAL ZONE (time) TRANSPORT ZONE (coarce to fine) ZONE LOCAL DEPOSITIONAL EROSIONAL ZONE (coarse) DELTA MOUNTAIN TORRENT ALLUVIAL FAN BRAIDED RIVER MEANDERING ALLUVIAL RIVER

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