Introducing HEC-RAS 2025: Improved Work Flow and New Capabilities of the HEC-RAS Rewrite

Wednesday, May 21, 2025

10:15 AM – 10:30 AM Alaska Daylight Time (AKDT)

Room: Room 5

Co-Author(s)

Kristy Riley

Hydraulics Division Chief
Hydrologic Engineering Center (HEC), USACE, California, United States

Author(s)

Alex Kennedy

Hydrologic Engineering Center (HEC), USACE, United States

Co-Author(s)

Alex Sanchez

Hydrologic Engineering Center (HEC), USACE, United States

Co-Author (not attending)(s)

Mark Jensen

Hydrologic Engineering Center (HEC), USACE, United States
Zach Morris

Hydrologic Engineering Center (HEC), USACE, United States
Stanford Gibson

Hydrologic Engineering Center (HEC), USACE, United States
Cameron Ackerman

Hydrologic Engineering Center (HEC), USACE, United States

Co-Author(s)

Eric Tichansky

Hydrologic Engineering Center (HEC), USACE, United States

Abstract Submission: The US Army Corps of Engineer's Hydrologic Engineering Center (HEC) is developing the next generation of their River Analysis System, HEC-RAS. HEC-RAS 2025 is a complete rewrite of the 30-year old HEC-RAS software including a new geospatial interface and computational engine designed for explicit, finite-volume computations conducive to parallelization and GPU computing. The presentation will survey the new software capabilities, focusing on the major improvements to the mesh development tools and seamless 1D/2D modeling capabilities. The presentation will also include a short software demonstration that will overview of the new interface and workflow including how to get a portable, alpha version of RAS2025, the new update process, the model development workflow, real-time results, example data sets, documentation, and other resources available to help hydraulic modelers step into the future of HEC-RAS.

Learning Objectives/Expected Outcome (Optional) :