The HEC-RAS website provides a number of resources, which include helping the user download software, learn how to use HEC-RAS, resolve problems, report bugs, and suggest improvements to CEIWR-HEC products and service.

HEC-RAS has been developed for the U.S. Army Corps of Engineers (USACE). However, software developed at the Hydrologic Engineering Center is made available to the public whenever appropriate. Use is not restricted and individuals outside of USACE may use the program without charge.

HEC-RAS 2025 is built for portability - everything it needs is self-contained. You can update, distribute, and download copies without worrying about administrator rights.

HEC-RAS is designed to perform one and two-dimensional hydraulic calculations for a full network of natural and constructed channels. The following is a description of the major capabilities of HEC-RAS.

HEC-RAS Training page provides links to training materials including videos from lectures and webinars, and workshop material from training classes. HEC-RAS Guides and Tutorials

The HEC-RAS Documentation Home Page is the most comprehensive source of documentation on HEC-RAS. The home page contains User's Manuals, Hydraulic References, Application Guides and more covering topics in 1D, 2D and sediment hydraulics.

You install HEC-RAS using the program HEC-RAS_ Version _Setup.exe. The Setup program installs the software, user's manuals, sample applications, and the Help system.

Introduction 10 Jan 2025 Version 6.7 Beta of the River Analysis System (HEC-RAS) is released. This version supersedes previous versions. A list of major new capabilities can be found on the New Features page. A list of major and minor the bugs …

HEC-RAS is an integrated system of software, designed for interactive use in a multi-tasking environment. The system is comprised of a graphical user interface (GUI), separate analysis components, data storage and management capabilities, graphics, …

HEC-RAS (River Analysis System) is the hydraulic modeling software package used to compute water surface profiles based on flows computed by the HEC-HMS and HEC-ResSim models.