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Re: Calculation of overbank losses
Because RAS is one-dimensional, it does not compute friction losses in between the cross sections. Therefore, the n-values in your example would be used to compute the WSEL at that cross section, then the n-values for the next section would be used at that location, without regard to the n-values at the previous section. The only element of the downstream cross section that is considered is the computed WSEL, which becomes the y1 in the standard-step calculation for the upstream section.
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