I am encountering a problem with the output for a SA/2D connection between two 2D flow areas. The connection consists of two box culverts that connect a 2d area with a river channel to a 2D area of tidal marsh. It appears the only way to review the discharge through the culverts is to View|Stage and Flow Hydrographs. (View|Detailed Output Tables for SA/2D connection are empty.)
My problem is that the discharge hydrographs appear to be incorrect. I am running a series of unsteady flow simulations with steady state discharge in the channel upstream of the SA/2D connection. If I examine simulation results in RAS/Mapper using profile lines immediately upstream and downstream of the SA/2D connection, the discharges are correct. The hydrograph view, however, show either zero discharge, double the discharge, or sometimes something wonky.
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Have others encountered something similar to this? Is there another way to review the results for a SA/2D connection? In particular, I am interested in flow velocities through the culverts.