TUFLOW Message 3519: Difference between revisions
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|type=[[CHECK]]
|message_desc=If the DEM's resolution is fine enough, SGS can preserve the flow path along the cells/faces without using any gully line. By default, a gully line applies a gradient along the faces based on the cell corners and
cell side Zpt values, and creates sloping cells using the ZC, ZU, ZV and ZH values. It does insure a continuous flow path, but the spatial accuracy may become lower comparing to the approach of sampling elevation directly from DEM. For more discussion, please see <u>[[Quadtree_and_Sub-Grid_Sampling_FAQ#Why_shouldn.27t_I_use_Z_Shape_gully.2Fmin_lines_with_SGS_models.3F|SGS FAQ page]]</u>.
|suggestions=Check if "SGS Sample Distance" and resolution of the DEM is fine enough to capture the gully line. If so, the topography modification MIN or GULLY option can be removed.
|discussion_page=* [[Talk:TUFLOW Message 3519|Discuss Message 3519]]
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