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Use QGis / RiverGis to interpolate XS instead of HEC-RAS - RiverGIS Q&A
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by (280 points)
Hello everyone,

Just a question not directly : focused on Rivergis but really connected, hope it had a room here for it. Does someone had any idea of using Qgis / GRASS  to interpolate cross-section as HEC-RAS does? Since I use manning values spatially distributed (related to my landuse area), HEC-RAS XS interpolation function doesn't handle quite well too many n values.

Thank you for you comments and answers.
by (3.8k points)
Antoine,
Building a model in RiverGIS requires a DTM. If you have also a landuse layer, you just simply add a new cross section - no need for interpolation here. What is your desired workflow for the interpolation?

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