Registration is open for this Nov 8-10, 2021 in-person 1D/2D HEC-RAS Course.
Registration is open for this Sept 27-29 in-person Introduction to HEC-RAS Course.
The FINAL release of HEC-RAS 6.0 is now available! See below message from HEC for more info. And a HUGE Congratulations to Gary Brunner for an amazing career. Thanks for all the hard work you put into making HEC-RAS such an awesome software program for us all to use. Best of luck in your retirement! […]
The beta 2 release of HEC-RAS 6.0 is now available. This fixes the bug with 2D bridges in SI models. See below message from HEC for more info: We have released another beta version, which is now available from our website. Several bugs have been fixed from the previous version. I have enclosed a […]
HEC-RAS Friends- You do not want to miss these Full Momentum Vodcasts. In Episode 12 (Part 1), Ben and Chris interview HEC-RAS Team Leader Gary Brunner about the new spatial precipitation and 2D bridges in HEC-RAS 6.0. Plus we get into a little history of HEC-RAS as well as some special guitar talk. That’s right…Gary […]
RAS Users! Go get your copy of HEC-RAS 6.0 beta. It’s now available!!! I’ve had the opportunity to test drive the new 2D bridge feature and it is AWESOME! Very easy to use and finally gives us the ability to model bridges in 2D!!! HEC will also make available some data sets to demonstrate how […]
Using RAS Mapper as a GIS Tool Part 1: Removing Bridge Decks from Terrain Surfaces This is the first in a three-part series on using RAS Mapper as a GIS tool. In this post we’ll cover the removal of bridge decks from terrain data. This topic comes up fairly frequently, since LiDAR data may be […]
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 […]
Take a look at the water surface profile in Figure 1 below. The two profiles are for Class A low flow (subcritical throughout) with identical boundary conditions, flow conditions, and geometry. The only difference is the bridge modeling approach: the blue line is calculated using the energy method; the red line is calculated using the […]
***Update: I received a few very important comments about this post that I want to share. First, and this is very important: These methods are not meant to be used to do any kind of detailed bridge design or bridge scour analysis (contraction, abutment, or pier scour). The methods I present in this post are […]
Here’s a video of pressure and weir flow yesterday at a bridge near my house. This was brought on by some very intense rainfall over a short period of time. What do you think the weir coefficient would be? ‘Tis the season in many parts of the world for heavy rains and high water. This […]