Create a Multi-branched Stream Alignment.
(optional) Additional branches can
be added to the stream alignment, but in the example case, the full model can be
represented with a single branch. Should you wish to explicitly model a multi-branched
river system, you can connect tributary branches to a previously drawn branch of the
stream alignment. To draw the new tributary, follow the same procedure as above. The
new stream’s final point is placed on top of the main branch, at the stream junction. If
you have placed the last point of your tributary close enough to the main stem, you will be prompted to confirm that you would like to connect the two stream segments. Once
you confirm the connection, a special stream junction node (light green) will be created at
the junction of the two stream alignments. Note that any time you create a junction in
your stream alignment, you should follow up by placing a computation point on top of the
junction. The computation point tool will also prompt you to confirm that you want the
point at the junction of the two streams. Once the computation point has been properly
placed there, HEC-ResPRM will be able to correctly identify and model the connectivity
of those rivers.
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