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I extracted a longitudinal river profile from a tin that was created from Lidar data. The result looks like stairs/steps with regular intervals rather than like a smooth river profile. I know that there are no riffles and pools which might cause such thing. Where does it come from. Thank you so much. Vera

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Can you give some more details like your ArcGIS version, and the procedure you used to create the TIN and then a longuitudinal river profile from it, including the values of any parameters used, please? – PolyGeo Feb 20 at 9:40

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