Presentations and Webinars

RAS2025: Overview, New Capabilities, and a Demo (RUG Webinar 1)

The RAS team provides an update on the development of our HEC-RAS rewrite RAS2025.  This presentation includes an overview of the software, a full demo of model construction including importing terrain from the USGS, and a look under the hood at new features and coming attractions.

2D Bridge Modeling (RUG Webinar 2)

This presentation introduces the classic bridge modeling approaches available in previous versions of HEC-RAS 6.x and then introduces the new pressure-overtopping approach released in version 6.7.  This presentation was part of the 2025 RAS User Group (RUG) webinar series.

What's New with HEC-RAS 6.0? (Part 1)

Get an overview on what new features are available in HEC-RAS 6.0

What's New with HEC-RAS 6.0? (Part 2)

The second part of this series focuses on sediment and debris innovations in HEC-RAS 6.0 including 2D Sediment and non-Newtonian transport. 

Discussion of New HEC-RAS 6.0 Capabilities (Part1)

A History of HEC-RAS and new features in HEC-RAS 6.0 are discussed:

• Spatial Precipitation and Infiltration
• 2D Bridges

Discussion of New HEC-RAS 6.0 Capabilities (Part 2)

New features in HEC-RAS 6.0 are discussed:

• Wind force in HEC-RAS
• Finite Volume Solution Algorithm
• Pump Stations in 2D Areas
• Computational Speed Improvements

Discussion of New HEC-RAS 6.0 Capabilities in RAS Mapper 

The History of GIS in HEC-RAS, and several new capabilities in RAS Mapper are discussed:

• RAS Mapper Editing Tools
• Land Cover Features
• Watch List Feature
• Terrain Modification Tools
• The RASter Calculator
• 3D Google Earth Viewer
• The RAS Mapper 3D Viewer

Rating Curve Analysis Tool - (New in HEC-RAS 6.2)

Version 6.2 includes a new Hydraulic Design Feature to Import and Analyze Sediment Data.

This webinar introduces:

• Common Sediment Data Analysis Errors,
• Best Practices for Sediment Data Analysis, and
• Introduces an Alpha Version* of the Sediment Analysis Tool
  • Including Bias Correction, Stationarity Analysis, Temporal Averaging, Piecewise Linear Regression, Hysteresis Visualization (and more)

*Note: The release version improved substantially from the version in this video.  Most significantly, the release version can download sediment data directly from the USGS.  But it also has a new look and feel, with many new features.  See the full documentation here.

Mud and Debris Flow Modeling with HEC-RAS

This is an overview of the non-Newtonian capabilities in HEC-RAS including:

• An overview of the the single-phase, rheological approach 
• Example applications
• A brief demo