Now that the official release of HEC-RAS 5.0 is out with 2D capabilities, I’m getting a lot of questions about whether 1D or 2D (or 1D/2D combined) is the best way to set up a specific model. The answer is very simple. Like everything else…It depends! Fortunately, there are some guidelines. 1. The general […]
A nice replication of the Mamore Flood of 2014 in Bolivia using HEC-RAS Version 5 courtesy of Vladimir Moya.
I’ll be teaching our very popular 2D HEC-RAS course in my home town of Portland Oregon, just in time to feature the official release of HEC-RAS 5.0. If you live in the area, or you’ve always wanted to figure out why everyone is talking about Portland (and HEC-RAS 5.0!), read on for more information […]
The wait is over! Finally the official release of HEC-RAS Version 5.0 is here. You can download it from the HEC website at http://www.hec.usace.army.mil/software/hec-ras/ If the download from the HEC website is slow, you can also download it from here: https://drive.google.com/file/d/0B0bpiyLiUeRXTy1pdUNralMzZ1U/view?usp=sharing (207 MB, Installation package without example problems) https://drive.google.com/file/d/0B0bpiyLiUeRXNGllMlE5V1dmQmM/view?usp=sharing (538 MB, Installation package with example problems) This new […]
The 2D HEC-RAS class is a GO! Who wants some HEC-RAS 2D Modelling training? This will be a fantastic opportunity to learn how to set up and run 2D and 1D/2D HEC-RAS models. Mr. Krey Price and I will be hosting this course in Melbourne, Australia on April 5, 6, and 7th. Please go here for more details […]
You can have a 2D full momentum model without errors if: Your cell size and computation interval is appropriate Everything is moving very slowly Stages are high Slopes are shallow N values are high Discharge doesn’t change too suddenly It’s a 2D only model (i.e. no connections to 1D) You are a skilled HEC-RAS modeler […]
The 2D HEC-RAS class is a GO! Who wants some HEC-RAS 2D Modelling training? This will be a fantastic opportunity to learn how to set up and run 2D and 1D/2D HEC-RAS models. Mr. Krey Price and I will be hosting this course in Melbourne, Australia on April 5, 6, and 7th. Please go here for […]
In case you haven’t seen it, there has been a very popular LinkedIn discussion on the Hydraulic/Hydrologic Modeler’s Forum debating the advantages, disadvantages, and merits of HEC-RAS 5.0, TUFLOW, and DHI’s MIKE21. There was a lot of great information (and some misinformation) and insight provided in that thread. It is well worth the read. Some […]
The following article written by Mr. David Markwood of AECOM provides an excellent summary of the latest beta (candidate) version of HEC-RAS 5.0. Well worth the read! https://www.linkedin.com/pulse/hec-ras-50-beta-update-david-r-markwood-pe
*Update: Version 5.0.2 now does flow transects in RAS Mapper with profile lines. No longer necessary to use a 2D Area Connection to do this. A very common output request in 2D modeling is for flow over (through) a transect line. HEC-RAS 5.0 does not have a specific tool for extracting flow data along a […]
If you are a Windows 8 user and you are having trouble getting HEC-RAS Version 5.0 beta to work, Window’s Program Compatibility Troubleshooter may solve the problem. Problems usually arise when pressing the compute button. One common message that pops up is “Error starting process. Steady file not found.” The Program Compatibility Troubleshooter will fix […]
RAS Mapper is a window in HEC-RAS that allows you to preprocess 2D areas, map results, and manage background images. In future versions of HEC-RAS, RAS Mapper will become more and more prevalent in our HEC-RAS modeling experience. As I understand it, eventually RAS Mapper and the geometry editor window may merge to form the […]