How to disable a junction but keep it in the geometry?
Thank you in advance for any help. I do a lot of FEMA modeling and according to their guidelines they do not allow junctions in HEC-RAS models. Is there a way to keep a junction in geometry but disable profile smoothing and other features that involve a junction? We have to treat every stream like different entities for flood mapping unless coincident peaks can be proven. Very rarely the case. I ask because a feature like this would help resolve topology errors (connecting lines for the NFHL layer) when putting all the streams together for the final LOMR or study. Just less work for the GIS team.
Its more rare to find an unsteady state FEMA model than a steady state. In most cases the peak flow (especially for small tributaries) is just added to the flow intersection and the junction trib is ignored. Obviously if you are doing an unsteady state model theres no need to do this. Thats common sense. As Lonnie said there is ways to remove HEC-RAS junction modeling by utilizing either SA or 2D flow area. That is more advanced and people are barely picking up on this old trick now