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HEC-GeoRAS is a GIS extension that provides the user with a set of procedures, tools, and utilities for the preparation of GIS data for import into HEC-RAS and generation of GIS data from RAS output. While the GeoRAS extension is designed for users with limited geographic information systems (GIS) experience, knowledge of GIS is advantageous. Users, however, must have experience modeling with HEC-RAS and have a thorough understanding of river hydraulics to properly create and interpret GIS data sets.

ArcGIS 10.2

The Hydrologic Engineering Center is currently working with ESRI to update HEC-GeoRAS for ArcGIS 10.2. However, this update is not expected to be available until the end of December 2014. In the meantime, the current release of HEC-GeoRAS works only with ArcGIS 10.1. Please check this web page for news on the availability of ArcGIS 10.2 compatible tools.


HEC-GeoRAS 10.1 for ArcGIS 10.1:  

This package will install HEC-GeoRAS 10.1 and all its pre-requisites automatically. Documentation is available from the programs Help menu.

ArcGIS 10.1 (ArcView license) with the 3D Analyst and Spatial Analyst extensions are required.

Release Notes: The Animation Tool was not migrated to HEC-GeoRAS 10.1. The native ArcGIS Animation Toolbar must be used.

Important note for HEC-GeoHMS 10.1 users:
If you previously had HEC-GeoRAS 10.1 installed and want to use HEC-GeoHMS 10.1, you must uninstall the old version of HEC-GeoRAS 10.1 released in Feb 2013 and install the updated setup package below that supports side by side installation with HEC-GeoHMS 10.1.

Download HEC-GeoRAS 10.1 [Updated] Install Package (12.7 MB)



HEC-GeoRAS 10 for ArcGIS 10.0:    

This package will install HEC-GeoRAS 10 and all its pre-requisites automatically. Documentation is available from the programs Help menu.

ArcGIS 10 (ArcView license) with the 3D Analyst and Spatial Analyst extensions are required.

Download HEC-GeoRAS 10 Install Package (12.66 MB)



HEC-GeoRAS 10 Example Data Sets:    

Examples: [What are these datasets?]
   - Wailupe Import Example (5.96 MB)
   - Baxter Example (44.7 MB)
   - Terrain Tiles Example (11.9 MB)



HEC-GeoRAS 4.3 for ArcGIS 9.3:    

This package will install HEC-GeoRAS 4.3 and all its pre-requisites automatically.

This version of HEC-GeoRAS is compatible with HEC-GeoHMS 5.0 and will not work with older versions. Download HEC-GeoHMS 5.0 from here.

ArcGIS 9.3 (ArcView license) with the 3D Analyst and Spatial Analyst extensions are required.

Download HEC-GeoRAS 4.3 Install Package (9.04 MB) Updated: March 2012
User's Manual

What's new in March 2012 update:
   Fixed issue with Elevation Update tool not properly updating elevations using the "Bank Extents" option using
   data between "Bank Lines".



HEC-GeoRAS 4.3 Example Data Sets:    

Examples: [What are these datasets?]
   - Wailupe Import Example (5.44 MB)
   - Baxter Example (19.9 MB)
   - Terrain Tiles Example (11.9 MB)



Archived Versions:    

HEC-GeoRAS 4.2.93 for ArcGIS 9.3
This package will install HEC-GeoRAS 4.2.93 and all its pre-requisites automatically.

ArcGIS 9.3 (ArcView license) with the 3D Analyst and Spatial Analyst extensions are required.

Download HEC-GeoRAS 4.2.93 Install Package (8.58 MB)
User's Manual (4.45 MB)

HEC-GeoRAS 4.2.92 for ArcGIS 9.2
This package will install HEC-GeoRAS 4.2.92 and all its pre-requisites automatically.

ArcGIS 9.2 (ArcView license) with the 3D Analyst and Spatial Analyst extensions are required.

Download HEC-GeoRAS 4.2.92 Install Package (10.9 MB)
User's Manual (4.45 MB)

HEC-GeoRAS 4.1.1 for ArcGIS 9.1 (Jan 06)
ArcGIS 9.1 (ArcView license) with the 3D Analyst and Spatial Analyst extensions are required.

Download HEC-GeoRAS 4.1.1 Install Package (9 MB) [Instructions]
User's Manual (3.5 MB)

HEC-GeoRAS 4.1 for ArcGIS 9 (Jan 06)
ArcGIS 9 (ArcView license) with the 3D Analyst and Spatial Analyst extensions are required.

Download HEC-GeoRAS 4.1 Install Package (9 MB) [Instructions]
User's Manual (3.5 MB)

HEC-GeoRAS 4.0 for ArcGIS 8.3 (Jan 06)
ArcGIS 8.3 (ArcView license) with the 3D Analyst and Spatial Analyst extensions are required.

Download HEC-GeoRAS 4.0 Install Package (11 MB) [Instructions]
User's Manual (3.5 MB)

HEC-GeoRAS 3.1.1 for ArcGIS 3.2 (Jan 06)
ArcView 3.2 with the 3D Analyst extensions is requried. Spatial Analyst extensions is recommended.

Download Install Package
User's Manual
Readme
Example Data

HEC-GeoRAS 1.0 for ArcInfo (Jan 06)
ArcInfo with the TIN extension is required.

Windows NT Install Package
UNIX Install Package
Installation Instructions
User's Manual
Readme
Sample Data and Terrain Model (TIN)