Hjulström curve

Method for determining sediment motion in rivers

The Hjulström curve, named after Filip Hjulström (1902–1982), is a graph used by hydrologists and geologists to determine whether a river will erode, transport, or deposit sediment. It was originally published in his doctoral thesis "Studies of the morphological activity of rivers as illustrated by the river Fyris." in 1935. The graph takes sediment particle size and water velocity into account.

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