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Interpolate and convert measured cross sections to raster

At the waterboard we measure cross sections each 100 to 200 metres. The cross sections are stored as points with a height attribute in the database ' Beheerregister' . To use these cross sections in Tygron I want to interpolate and convert them to a grid. With the regular tools in ArcGIS Pro I am unable to properly interpolate the cross sections. These tools interpolate ' linearly' so that is only works when the stream is straight. Applying a mask in ArcGIS Pro is only for postprocessing and has no effect on the final results. I'm looking for a method/ tool to interpolate the cross sections in a way that also takes into account the location and curves in the stream.

Interpolation on straight parts of the stream work fine.

Interpolation at curves goes wrong.

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