Much of the information is also useful when performing an unsteady flow analysis. Most of the information contained within this chapter is based on performing a steady flow analysis. In addition to these features, the user can use the graphical and tabular output to review the results and check the data for reasonableness and consistency. These features include: built in data checking an Errors, Warnings, and Notes system and a computational Log Output file. The HEC-RAS software contains several features to assist the user in the development of a model debugging problems and the review of results. The HEC-RAS software is an engineering tool, it is by no means a replacement for sound engineering.

The user must carefully review the results to ensure that they adequately represent the study reach and that they are reasonable and consistent. Because of this, the fact that the program executes a complete run does not necessarily mean that the results are good. 1 C H A P T E R 11 Troubleshooting With HEC-RAS For a steady flow analysis, the HEC-RAS software is designed to continue its computations all the way through completion, even when the user has entered poor data.

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