![]() Since generally we want the overbank flow reach length to be further out from the bank, these bank stations will need to be adjusted in RAS. But the stationing of the reach length lines doesn't matter because the reach lengths are determined by the difference between cross-sections.Īlso, the locations where the reach length lines intersect the cross-sections is set to the bank station in RAS. The right bank reach length line was drawn opposite. The left bank reach length line was drawn from upstream to downstream, so the highest station is at the downstream end. The two reach length lines can be drawn in any order, starting either upstream or downstream. ![]() ![]() The cross-sections can be drawn in any order and any direction. Note that the stationing starts from zero at the downstream end (good for RAS). In the drawing above, the stream centerline has been drawn from downstream to upstream.
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