Lateral Structure on River Bends
Lateral structures can be used in HEC-RAS for transferring flow from a river/reach to another river/reach, 2D area or storage…
New geospatial editing tools are currently in development for the next version of HEC-RAS-Version 5.1. While no date has been set for the release of Version 5.1, it is expected sometime within the next year or two. But no guarantees! This will be an exciting new addition to HEC-RAS in that users will no longer be reliant on 3rd party software like ArcGIS or AutoCAD to develop geometric features like cross sections, river lines, flow lines, storage and 2D areas, etc. All of this will be done within the HEC-RAS program environment. And this will effectively eliminate the need for HEC-GeoRAS.
HEC recently published it’s Spring 2017 Newsletter, which has a very nice article by Cameron Ackerman ,P.E., D.WRE on some of the new tools and capabilities that will be available within HEC-RAS Version 5.1 for extracting GIS information from digital terrain models. The newsletter can be read here:
Cameron’s article on new geometric editing features in Version 5.1 starts on page 20.
The new geospatial editing toolbar will serve as the base point for adding and editing geospatial features in HEC-RAS and will be docked to the RAS Mapper window. It includes editing tools for adding new features, selecting/editing features, undo and redo, and plotting terrain profiles.
With these tools, you’ll be able to add geospatial features and interact with them directly within HEC-RAS. Here you see the ability to move stream centerline points in RAS Mapper:
HEC also plans to have interactive help messaging while working in the geospatial environment to help the user identify errors in the geometry setup. The following figure shows help messages for locations where bank lines do not intersect cross sections, which would result in missing bank stations.