2D Hydraulic Modeling User's Forum Meeting Scheduled for January 19th

Image depicts bridge and current morphing in 3D image

Photo by John Gussman 

2D Hydraulic Modeling User's Forum

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January 19th Web Meeting:

How to Generate An Accurate and Efficient Mesh



Hydraulic modelers, 

Happy New Year!  We have a lot planned for the 2D Hydraulic Modeling User's Forum in 2023 and we will kick it off with our first meeting of the year on Thursday January 19th, 11:00-12:30 Mountain Time. The Zoom meeting link info is provided below. 

We will present best practices and tools for generating a mesh that accurately represents the terrain and hydraulic controls while still resulting in the most efficient simulation times. It is important to compare a mesh with the original terrain in order to assess how well it represents the terrain and whether or not key hydraulic controls are adequately captured.   The use of breaklines to represent hydraulic controls and variable mesh resolution will be discussed, including an overview of tools that are available in the SMS package to evaluate the accuracy of a mesh. 

If you have any questions on mesh development that you would like to see included in the presentation, please send them to Scott (scott.hogan@gmail.com).

If you missed the previous web meeting in November 2022, links to the web recording and follow-up demo are provided near the end of this email.


ZOOM Meeting Link!  Registration is not required.

Use the following information to connect to the meeting.  This information is also included in the calendar invite (access with Add to Calendar button above).  Dial in numbers are also included in the calendar invite.

ZoomGov Web Meeting Link

Meeting ID: 160 653 6498

Passcode: 096022

If you are not available at this time, don't worry, a recording link will be sent following the meeting to all who are on included on the listserv for this forum.

If you have specific questions or additional topics to be discussed, please contact scott.hogan@dot.gov.

Schedule NHI Training Sessions


The NHI 2D hydraulic modeling training course is available both in person (NHI 135095) and online (NHI 135095V). Courses get scheduled based on host requests and often have public seats available, but they go quick.    You may consider hosting a course if the availability doesn't meet your needs. Please feel free to contact Scott Hogan with questions.

Download Free Software

Free Software

Download a FREE copy of the SMS Graphical User Interface and SRH-2D.

Once the software is installed, go to the Menu-Help-Register. Select 'Request a license', which takes you to the Aquaveo page.  The 'Request Community' option is free and does not require a license code.  All DOTs and FHWA employees should select the Govt' License option.

Reviewers License: Anyone who reviews models rather than develop them, can request a free ‘pro’ version of SMS from Aquaveo. Before requesting a license, reviewers must complete the form at the following link and submit it to Aquaveo.                                         www.aquaveo.com/regulatory-review

Tutorials and Training Available


Access SRH-2D/SMS Tutorials and more.


Access the FHWA-NHI SRH-2D Training Videos.

Additionally, there are more videos available here for those who are new to 2D hydraulic modeling.

Sediment Transport Videos

Access the FHWA SRH-2D Sediment Transport Training Videos here


Previous Webinar Recordings

2D waterway graphic


A list of all previous 2D Hydraulic Modeling User's Forum Meetings and links to the recordings is included below.  Meetings prior to March 2022 were held with Adobe Connect, and meetings after March 2022 in Zoom.


Web Links to web meeting recording links after March 2022 (Zoom)

April 7, 2022 - Colorado DOT 2D Modeling Success Stories

November 16, 2022 - Automated Bridge and Culvert Meshing Tools (PDF Slides)

November 16, 2022 - Automated Bridge and Culvert Meshing Demo



Web Link to web meeting recordings prior to March 2022

July 15, 2015 - SRH-2D Model Development
August 26, 2015 - Managing information in SMS and reviewing results for adequacy
April 27, 2016 - Mesh Development and Review
February 2, 2017 - Evaluating bridge scour with 2D model results
April 19, 2017 - SRH-2D Boundary Conditions
June 21, 2017 - Developing Terrain Data
August 31, 2017 - Back to the Basics for mesh development
October 18. 2017 - Potential mesh stability issues and solutions
January 25, 2018 - CDOTs 2D modeling experience
March 1, 2018 - Nevada DOT terrain mapping with UAVs
May 31, 2018 - Bridge and Culvert Best Modeling Practices
August 20, 2018 - Minnesota Data Collection and Model Calibration
November 14,2018 - 2D Hydraulic Model Review
January 17, 2019 - New features in the SMS SRH2D interface
March 14, 2019 - SRH-2D Model Development Overview
June 18, 2019 - Importing and Compiling Terrain Data
August 8, 2019 - Presenting and Exporting Results
November 14,2019 - 2D Hydraulic Modeling Reference Document Overview
February 20, 2020 - 2D Hydraulic Model Review - Terrain Data
April 4, 2020 - 2D Hydraulic Model Review - 2D Mesh
May 13, 2020 - 2D Hydraulic Model Review - 2D Boundary Conditions and Materials
July 16, 2020 - 2D Hydraulic Model Review - Hydraulic Structures
December 1, 2020 – What’s new in SMS 13.1 and SRH-2D 3.3
March 2, 2021 -2D Hydraulic Model Review - Model Controls and Results (3D Bridges)
June 17, 2021 – Understanding the Importance of Hydraulic Controls/Mesh Resolution
January 13, 2022 - FEMA Flood Mapping Using 2D Modeling



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