Culvert Modeling at a Junction

[Anonymous]

I am new to HEC-RAS and currently working on a project to model a causeway that starts in a tributary and enters a larger stream. The causeway then travels upstream to an island in the larger river. In order to model the culverts needed I believe I need to reference cross sections in multiple reaches. Is there any possible way to do this or am I better off modeling the causeway separately for tributary and larger stream somehow?

[Anonymous]

If you are doing this in 1D, you might want to consider 2D if you have terrain and the time. Although this would be trickier for a new RAS user.

Without knowing more about your particular problem, it is hard to say too much. If your culverts start in one reach and end in a different reach, you may be able to do that using a lateral structure.

It might also be possible to model your culverts as a normal cross section with a lid using the Preissmann slot option.

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