Now this is the kind of post that gets you on The RAS Solution! Cutting edge creative solutions to complex problems. This is great stuff. Thanks Michael for all the effort you put in to this. In today’s post we’ll cover two methodologies that leverage HEC RAS results to create impressionable and multi-dimensional flood visualizations. […]
HEC-RAS Modelers! Don’t miss this opportunity for 2D HEC-RAS training in beautiful Boise Idaho. I’ll be teaching this class and hope to see you there! There are limited seats for this class so don’t delay in signing up. This will be a three-day course with a mix of lectures and workshop exercises. You will learn […]
If you’ve been doing some 2D modeling, you most likely have run into what I call nuisance cell errors. You see them while your model is running and they can really slow down your simulation as the RAS chugs through iterations to try to come to a solution. The errors here are in the […]
One of the most anticipated new features soon to come in the next major version of HEC-RAS (Version 5.1) is the option of running unsteady 1D reaches with a finite volume solution scheme. This will be a fantastic addition to HEC-RAS. Gary Brunner recently gave me a brief overview of the new finite volume feature […]
Situation: Advances in HEC-RAS now allow for improved simulation of overbanks using 2D Flow Areas. Coupled 1D/2D models where 1D cross-sections represent the bank-to-bank cross-section data and 2D flow areas represent overbank areas has greatly improved the accuracy and robustness of HEC-RAS models. This is particularly the case in flat, urban areas with significant overbank […]
Here’s an opportunity to have a direct impact on the development of spatial precipitation and infiltration methods in HEC-RAS. Please read the message from Gary Brunner, Lead Developer of HEC-RAS, and if you would like to provide feedback to his questions, please do so in the comments section at the bottom of this post. If […]
Please join me this October for a fantastic opportunity to learn 2D HEC-RAS and Sediment Dynamics. Both courses are open to all and will be hosted by River Restoration Northwest and Portland State University. Take one or both courses! This was very popular last year and sold out so don’t wait too long to register. […]
HEC has released a new version of HEC-RAS called version 5.0.5 today. This version is a bug fix only version (i.e. No new features). Unfortunately in version 5.0.4 there was a bug in which User defined Manning’s n value override regions for 2D Flow Areas (called “2D Area Manning’s n Regions”), define in the Geometry […]
I’ve been seeing some cool applications of HEC-RAS from around the world lately. Here are some articles showing a few ways we’ve been putting HEC-RAS to use down under. Making Middle Zealand Did you know that the only thing keeping New Zealand’s two main islands from being split into three is a little 2-km wide […]
A recent question was posted on the HEC-RAS blog regarding the optimal shape of the SA/2D Area Connection alignment for a wormhole culvert – in particular, whether a “Z” shape or “S” shape would be preferable. My apologies in advance for the drawn-out response, but I’ve had this question come up a number of times in class and […]