Inline Structures (HEC RAS User's Manual) https://www.hec.usace.army.mil/confluence/rasdocs/rasum/latest/entering-and-editing-geometric-data/inline-structures-dams-weirs-and-gated-spillways Related Video: HEC RAS Lesson 6 - Geometric Data - Entering and Editing Culvert Data https://youtu.be/Z6hsnSVIlhc
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