Abstract

The hypothesis that channel perimeter sediment characteristics exercise control over the shape (width-to-depth ratio) of alluvial channels is well established in the literature. Schumm's analyses of Great Plains streams constitute a particularly important set of evidence in this regard. A reanalysis of Schumm's data using multiple regression techniques suggests that channel perimeter sediment characteristics play a minor role in the development of channel shape. Discharge appears to be the dominant factor controlling width-to-depth ratio in Great Plains streams.

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