Author(s): Stephen Darby; Massimo Rinaldi; Ilaria Pistolesi
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Keywords: No Keywords
Abstract: In this paper a model is developed, verified, and then used to simulate the effects of flexible riparian vegetation growth on discharge capacity in a channel with a specified shape, for a range of bed-material and channel gradient values. Vegetation causes significant (>10%) decreases in discharge capacity when the extent of 1.0 m high grass growing on the banks and floodplain becomes greater than about 15% of the length of the wetted perimeter for low-gradient (S=1×10~ (-5)) channels, or greater than about 45% of the length of the wetted perimeter for higher-gradient (S=0.001) channels.
Year: 1997