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HEC-RAS: Distances at junctions

HEC-RAS: Distances at junctions

HEC-RAS: Distances at junctions

(OP)
In HEC-RAS, where I have a confluence of a main stream and a major branch, I have a junction. Through the junction editor I have entered the distance from the junction to the two upstream cross-sections, one in each reach.  Do I then, when defining those cross-sections, say the downstream distance is 0 feet? Or do you use the distance across the junction. I've done that (i.e. distance across junction AND downstream distance from cross-section to junction), but this seems overly conservative to me.  In the junction editor, I have NOT checked the box for calculating friction.

Thanks in advance,
NDG

RE: HEC-RAS: Distances at junctions

Have you read the bit in the hydraulic reference manual about the way the junction is calculated?

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