HEC-GeoRAS is a GIS-based tool developed by the US Army Corps of Engineers' Hydrologic Engineering Center (HEC). It allows users to preprocess geospatial data for hydraulic modeling using HEC-RAS (Hydrologic Engineering Center's River Analysis System). HEC-GeoRAS is designed to work within the ArcGIS environment, leveraging its spatial analysis and data management capabilities.
Are there any other legacy ArcGIS tools you'd like to see covered in a similar way?
The toolbar extracts engineering parameters directly from 3D surface files, compiling them into a singular .RASImport.sdf file:
Load your terrain data and ensure it is in the correct projection. hec georas for arcgis 108 upd
: HEC is no longer investing in the GeoRAS extension. Instead, they have integrated these GIS capabilities directly into HEC-RAS Mapper
Draw three continuous lines—Left Overbank, Main Channel, Right Overbank—to calculate distances between cross-sections.
After running your simulation in HEC-RAS: HEC-GeoRAS is a GIS-based tool developed by the
Requires HEC-GeoRAS 10.8 (or the final cumulative updated installer provided by HEC designated for 10.8).
any previous version of HEC-GeoRAS through the Windows Control Panel.
If you are running Esri’s ArcMap 10.8 (the final version of the classic ArcGIS Desktop), you are at a critical juncture. This article dissects everything you need to know about the HEC-GeoRAS 10.8 update—how to install it, why it matters, its limitations, and how to migrate your workflow to the future. Are there any other legacy ArcGIS tools you'd
For those maintaining critical infrastructure models built in 2018-2021, this update is your lifeline. Archive the installer .exe on a secure network drive, document your workflow, and plan your migration to cloud-native GIS hydraulic modeling by Q4 2026.
and verify that your Terrain surface is actively selected. Re-run the profile extraction. 6. The Future: Migrating to HEC-RAS RAS Mapper
Use the "Velocity" or "Depth" options to generate raster grids.
While HEC-GeoRAS is great for pre-processing, modern HEC-RAS Mapper (6.x) is often faster and more direct for creating inundation maps, depth grids, and velocity maps, reducing the reliance on ArcMap for final visualization. Conclusion
A new processing setting that allows users to extract cross-sections for an entire river system in a batch process rather than clicking individual lines, utilizing background processing (64-bit background geoprocessing, if available in the 10.8 setup).
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HEC-GeoRAS is a GIS-based tool developed by the US Army Corps of Engineers' Hydrologic Engineering Center (HEC). It allows users to preprocess geospatial data for hydraulic modeling using HEC-RAS (Hydrologic Engineering Center's River Analysis System). HEC-GeoRAS is designed to work within the ArcGIS environment, leveraging its spatial analysis and data management capabilities.
Are there any other legacy ArcGIS tools you'd like to see covered in a similar way?
The toolbar extracts engineering parameters directly from 3D surface files, compiling them into a singular .RASImport.sdf file:
Load your terrain data and ensure it is in the correct projection.
: HEC is no longer investing in the GeoRAS extension. Instead, they have integrated these GIS capabilities directly into HEC-RAS Mapper
Draw three continuous lines—Left Overbank, Main Channel, Right Overbank—to calculate distances between cross-sections.
After running your simulation in HEC-RAS:
Requires HEC-GeoRAS 10.8 (or the final cumulative updated installer provided by HEC designated for 10.8).
any previous version of HEC-GeoRAS through the Windows Control Panel.
If you are running Esri’s ArcMap 10.8 (the final version of the classic ArcGIS Desktop), you are at a critical juncture. This article dissects everything you need to know about the HEC-GeoRAS 10.8 update—how to install it, why it matters, its limitations, and how to migrate your workflow to the future.
For those maintaining critical infrastructure models built in 2018-2021, this update is your lifeline. Archive the installer .exe on a secure network drive, document your workflow, and plan your migration to cloud-native GIS hydraulic modeling by Q4 2026.
and verify that your Terrain surface is actively selected. Re-run the profile extraction. 6. The Future: Migrating to HEC-RAS RAS Mapper
Use the "Velocity" or "Depth" options to generate raster grids.
While HEC-GeoRAS is great for pre-processing, modern HEC-RAS Mapper (6.x) is often faster and more direct for creating inundation maps, depth grids, and velocity maps, reducing the reliance on ArcMap for final visualization. Conclusion
A new processing setting that allows users to extract cross-sections for an entire river system in a batch process rather than clicking individual lines, utilizing background processing (64-bit background geoprocessing, if available in the 10.8 setup).
