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I was wondering if there is a way to shift a cross section in HEC RAS to the side? Since my data is not the best, a lot of xs are shifted somehow (see screenshot). The only way fixing it I found so far is opening and editing (shifting) the entire xs in RASMapper, then going back to the xs editor, checking whether the shifting is okay and depending on whether it does not look fine redoing it several times. Would be okay when only having a bunch of xs, but the model includes hundreds of xs...

Does anyone has an idea? (edit: I added a second example)

enter image description here

enter image description here

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  • But that section does not need to be shifted, it needs to be swapped. Hec-ras requires all sections to be drawn from left to right looking downstream.
    – Marco
    Sep 18, 2020 at 6:21
  • You did not state how you are working, I guess your project is georeferenced and the cross sections are produced out of a terrain model in ras mapper. In case you start with a gis file with the cross sections it is easy to swap them in your GIS program. I do that regularly in QGIS with a plugin
    – Marco
    Sep 18, 2020 at 6:26
  • I know how to fix this (swap cross sections) with QGIS and RiverGIS, will it work for you?
    – Marco
    Sep 18, 2020 at 6:30
  • Swapped, you mean mirrored? Actually the cross sections come from measured (badly measured) xyz-data. Even it looks like swapped, it is not. I will add another example that maybe shows it clearer...
    – Anna
    Sep 18, 2020 at 10:51
  • In the picture you are comparing the data of the cross section itself (black line with dots) with data from a terrain model in rasmapper. Is it that terrain model build out of the same survay? I still guess they are morrered. Why are you sure they are not?
    – Marco
    Sep 18, 2020 at 12:37

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