Earlier versions of SMS allowed modeling HEC-RAS 1D models. HEC-RAS 1D is used for performing water quality analysis. Though once part of SMS, it was removed because it was supported by Aquaveo's Watershed Modeling Software (WMS). However, with the inclusion of HEC-RAS 2D, the interface for HEC-RAS 1D has been restored into SMS 13.1.
Using HEC-RAS 1D in SMS primarily makes use of the 1D hydraulic centerline coverage and the 1D hydraulic cross section coverages. It also makes use of the material coverages, with the added bonus of now being able to use SRH-2D material coverages. Once you have defined the materials, centerline and cross sections in your project, you can switch to the 1D Module. The 1D Module has also been reintroduced in SMS 13.1.
Once in the 1D Module, you can access the HEC-RAS 1D menu where you can find the HEC-RAS 1D materials and model control. SMS allows you to select the material coverage to use for HEC-RAS 1D, and then assign that material coverage to the HEC-RAS 1D model. After you have set up your HEC-RAS 1D model in SMS, you can export a project file to use in HEC-RAS.
With HEC-RAS 1D in SMS, you can take advantage of all the tools offered in SMS to build your HEC-RAS 1D project. This includes tools to extract cross sections and centerlines from imported data or existing projects. SMS's editing tools can also be used to adjust the centerline or cross section before importing the project into HEC-RAS. Furthermore, SMS allows you to use profile plots and the various viewing options to review your cross sectional data. It is recommended that you review your HEC-RAS 1D project in SMS before exporting the project file.
HEC-RAS and SMS together increase your water modeling options. Try out using the reintroduced HEC-RAS 1D in SMS 13.1 today!