Udemy – A Practical Introduction to 1D River Modelling using HEC-RAS 2023-3

Updated August 10, 2026 3.06 GB

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Descriptions

A Practical Introduction to 2D River Modelling in HEC-RAS, This course teaches you, through 54 concise video tutorials, how to build both combined 1D-2D and 2D-only river models in HEC-RAS hydraulic modelling software. You will learn to use RAS Mapper to import and modify terrain data, create landuse layers for roughness, and set up 2D geometry, cell size, and spacing to best represent terrain and flow. The course covers connecting 1D and 2D areas, representing river channels, entering boundary conditions, running scenarios, and adjusting computation options and intervals. You will learn to view and analyze both 1D and 2D results, gaining practical skills for advancing from 1D to 2D hydraulic modelling in geo-referenced environments. All required data is provided, and HEC-RAS is free to download. This course is suitable for those studying river processes in academia or working in river engineering.

What you’ll learn

Work with RAS Mapper in HEC-RAS to create terrain layers for 1D and 2D river modelling.
Import 1D cross-section data to build accurate river channels.
Create landcover layers and apply Manning’s n values.
Create 2D meshes, set cell parameters, and add refinement regions and breaklines.
Build lateral structures to connect 1D and 2D elements.
Adjust 2D areas to create optimal river channel meshes.
Enter unsteady flow boundary condition and initial condition data.
Set up unsteady runs and configure computation options and tolerances.
Choose appropriate time-steps using the Courant Number.
View and interpret 1D and 2D results.

Who this course is for

Anyone interested in advancing hydraulic modelling skills from 1D to 2D using RAS Mapper in HEC-RAS.

Specificatoin of A Practical Introduction to 2D River Modelling in HEC-RAS

Publisher : Udemy
Teacher : Nick Wallerstein
Language : English
Level : Intermediate
Number of Course : 57
Duration : 8 hours and 19 minutes

Content of A Practical Introduction to 2D River Modelling in HEC-RAS

A Practical Introduction to 2D River Modelling in HEC-RAS

Requirements

A basic understanding of the concepts involved in river hydraulic modelling would be beneficial but the course learning goals can be achieved without the need for any prior experience of using HEC-RAS.