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The Manning’s n roughness of the vegetated channel is determined from the vegetation height, based on work described by Kouwen (1988), Kouwen and Li (1980) and Kouwen and Unny (1973). A more detailed discussion of the algorithm is given in Calculating Manning's n in Swales.
Batter Slope
Slope of the side of the channel. Note that this must not be confused with the slope of the actual channel.
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