HEC-RAS is a free hydrologic and hydraulic modelling program that provides 1D and 2D floodplain and hydraulic structure analyses. Online training is currently available on-demand, with units available to complete at your own pace. Register any time for on-demand training here.
In-person HEC-RAS Training
Our next in-person HEC-RAS training course takes place in May 2024 in Brisbane as a pre-conference workshop for the 2024 FMA Conference.
Our HEC-RAS training series provides the theoretical background and practical applications for setting up flood models from scratch. Workshop material is provided. Courses are delivered in partnership with the Australian Water School. Content and pricing details are available through the registration links below.
Our 8-part HEC-RAS Masterclass builds on our HEC-RAS Essentials course with additional skills, including terrain modification, sensitivity analyses, export options, troubleshooting, and more.
HEC-RAS is a public domain hydraulic modelling software application developed by the U.S. Army Corps of Engineers Hydrologic Engineering Centre. Following are some downloads and links relevant to HEC-RAS Version 6:
The U.S. Army Corps of Engineers’ Hydrologic Engineering Centre has been improving 2-dimensional flow capabilities, unsteady sediment transport, and other new features into each highly anticipated update.
HEC-RAS Version 6 features:
Two-dimensional and combined one- and two-dimensional unsteady flow modelling
RAS Mapper capabilities and enhancements
Automated Manning’s n value calibration for one-dimensional unsteady flow
Simplified physical breaching algorithm for dams and levees
Breach width and development time calculator
New hydraulic outlet features for inline structures
Sediment transport modelling enhancements
Reservoir flushing and sluicing
Channel stability using BSTEM integrated within HEC-RAS
Water quality modelling enhancements
New 2D user’s manual
New example applications
Updated reference manuals and help systems
Increased flexibility in defining and modifying 2D meshes via user-defined break lines
Georeferencing of lateral structures for combined 1D-2D connections
2D rain-on-grid with precipitation boundary conditions
TIN-based sloping water surface technique to show spatial results inside of RAS Mapper
More flexible internal hydraulic structures
Improvements to the stability of connecting 1D reaches into and out of 2D flow areas
Unsteady sediment transport
Learn what’s new in HEC-RAS with our articles and videos. For a summary of new features, see the U.S. Army Corps of Engineers website here. Here’s an interesting piece about the history of HEC-RAS