RiverGIS, a free/libre GIS tool for HEC-RAS geometry

[Radosław Pasiok]

A new version of RiverGIS, a free/libre GIS tool for HEC-RAS geometry creation, has just been released. It is inspired by HEC-GeoRAS and tries to mimic its workflow whenever it is possible. Plus, it can create 2D flow areas computational points aligned to structures. Please visit http://rivergis.com for more details.

[Anıl]

Hecras is capable of aligning the cell faces along with structures in the 2D mesh with using breakline tool incorporated in the latest beta version(August-2015). I wonder if the rivergis extension has more advantages over breakline tool in 2D meshes. Why and When do we need the rivergis to better model our 2D mesh? Regards.

[Radosław Pasiok]

2D mesh tools are present in the RiverGIS since its early stage of development, when there was no breakline tool in HEC-RAS.

Currently RiverGIS has two options non-existing in HEC-RAS:
1. you can align a few rows of points along a breakline, and
2. you can locate breakpoints along breaklines if you need a cell faces at exact locations (at breakpoints)

Please, see example usage of the two at:
http://rivergis.com/ras2d_geometry.html#create-2d-computational-points

The options were developed for a case of a channel with groins:
http://rivergis.com/_images/ras2d_mesh_brkpts2.jpg

Best regards,

Radek Pasiok

[Author]

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