Stream Alignment

A common schematic is used to share data between HEC software (for example, HEC-HMS and HEC-ResSim) for models within a watershed. Use of this common schematic ensures consistency of computation nodes, routing reaches, and so on.

You can use tools to create the common schematic in the Setup module. The tools allow you to depict elements of the common schematic— but not change the configuration of the native models. Changes made with the tools are not accounted for in the native models' computations.

The first item to create in the common schematic is the stream alignment. A stream alignment is the backbone for all the other elements that make up a common schematic. This appendix will describe the tools used and concepts behind creating a stream alignment.