HEC-RAS 2D Training

HEC-RAS 2D has become a common tool for analyzing urban, flat terrain, confluences and other complex flooding scenarios. Learn HEC-RAS 2D in this hands-on two-and-a-half-day training class. You will leave with an understanding of:

  • Differences between 1D and 2D modeling
  • Basics of unsteady RAS modeling
  • Terrain and mesh development and editing
  • Modeling structures
  • Setting boundary conditions
  • Visualizing, interpreting and reporting results using RAS Mapper
  • Rain-on-mesh analysis
  • Integrating 1D and 2D models
  • Reviewing models and interpreting errors

About the Training

Participants should have a basic understanding of HEC-RAS 1D, steady-state modeling. Unsteady HEC-RAS modeling experience would also be helpful, but is not necessary.

For more information or questions regarding this training, please contact FloodTraining@halff.com.

Note: Participants should bring their own laptop with HEC-RAS 6.3.1 installed. Halff will provide the workshop data for download and by flash drive. Click here to download the software for free.


If purchasing 3 or more tickets, email Hannah Fallon to receive a discount code.

Course Agenda

Day 1 (8:30 a.m. to 4:30 p.m.)

  • • Overview and introductions
  • • HEC-RAS 2D basics
  • • HEC-RAS 2D computations overview
  • • Terrain, terrain editing
  • • Hands on workshop – Terrain
  • • 2D mesh
  • • Hands on workshop – Mesh
  • • Boundary conditions and Manning’s n
  • • Hands on workshop
  • • Structures: inline, bridges, culverts, bridges, pumps
  • • Hands on workshop – Structures

Day 2 (8:30 a.m. to 4:30 p.m.)

  • • Recap from day one
  • • RAS Mapper tools and utilities
  • • Hands on workshop – RAS Mapper
  • • Rain on mesh
  • • Hands on workshop
  • • 1D/2D modeling
  • • Hands on workshop – 1D/2D
  • • 2D modeling calculations and tolerances

Day 3 (8:30 a.m. to 12 p.m.)

  • • Recap from day two
  • • Model review and checklist
  • • Hands on workshop – Model review
  • • Q&A and wrap up


Sunit Deo, PE, CFM
Sunit is a Water Resources Team Leader at Halff with over 20 years of experience in the industry. He has led multiple trainings on advanced HEC-RAS 2D for various government agencies throughout Texas. Sunit regularly conducts workshops and presentations on 1D/2D hydraulic modeling and dam breach analysis.

Ryan Londeen, PE, CFM
Ryan is a Water Resources Project Manager for Halff Associates in Conroe, Texas. His ten years of experience includes extensive HEC-RAS 2D modeling for a broad range of applications and providing 2D modeling review support for various government agencies in Texas. Ryan has also led multiple trainings and workshops on advanced HEC-RAS 2D and model reviews.