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  1. HEC-RAS - United States Army

    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 …

  2. HEC-RAS Downloads

    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 …

  3. HEC-RAS Documentation

    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 …

  4. HEC-RAS 2025

    RAS 2025 was written from scratch in C#.NET, with performance and quality assurance testing in mind. Modernizing and centralizing from 4 programming languages into 1 will help focus the …

  5. Introduction to HEC-RAS

    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 …

  6. HEC-RAS Training

    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

  7. HEC-RAS User's Manual

    Foreword Introduction to HEC-RAS Installing HEC-RAS Working With HEC-RAS Working with Projects Entering and Editing Geometric Data

  8. HEC-RAS Documentation

    HEC-RAS Release Notes Sediment Documentation HEC-RAS 1D Sediment Transport HEC-RAS 2D Sediment Transport Mud and Debris Flow Additional Resources HEC-RAS Guides and …

  9. HEC-RAS Features

    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 …

  10. Working With HEC-RAS

    HEC-RAS has the ability to lay out a model based on a geospatial coordinate system, or it can be developed without one. The very first versions of HEC-RAS did not utilize geospatial data, and …