Characteristics of sediment transport in a drainage basin are discussed from a concept of sediment transport potential estimated by a hypsometric integral of landform weighted with annual precipitation, as a measure of potential energy. A hypsometric curve indicates altitude distribution of the drainage basin topography, and characterizes landform, which resulted from geological and meteorological actions. The sediment transport potentials show high correlation with sedimentation volumes in dam reservoirs in the Kiso river basin, and those of 33 major river basins in Japan prove to be able to explain a generally accepted tendency of sediment yields theory well, and clarify that sediment transport is related with a development of alluvial plain.
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