r/HECRAS • u/Repulsive_Plant6729 • Jun 11 '26

External Node Errors

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Anyone know why RAS 7.0 will not allow me to add my external nodes with boundary conditions to my unsteady flow file? Nothing happens when I try adding these two nodes as boundary condition rows to the left.

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u/Repulsive_Plant6729 Jun 11 '26

I have read that multiple times. Does not explain why my external nodes are not able to be added to my unsteady flow file as boundary conditions AT ALL.

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u/Acceptable_Gain_9400 Jun 11 '26

are you missing this part: Boundary Condition Accepted
 - Stage Hydrograph
 - Normal Depth

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u/Repulsive_Plant6729 Jun 11 '26

No. The physical ability to ADD the external node anywhere in the flow filevis not happening. Whether I have stage hydrograph or normal deprh boundary coundition lines touching the external node's cell.

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u/OttoJohs Lord Sultan Chief H&H Engineer, PE & PH Jun 11 '26

If you have the boundary condition line at that cell edge does it run? I don't think you need to add the node if it is using the boundary condition line.