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GeoHECRAS from CivilGEO


Breakthrough HEC‑RAS

modeling and 3D visualization 

CivilGEO, Inc., USA is a Wisconsin-based engineering firm that specializes in developing easy-to-use, CAD & GIS based hydraulics and hydrology engineering software for the global market. CivilGEO’s clients include many US State DOTs and Canadian Conservation Authorities, the USGS, many corporate giants like AECOM, Jacobs, Stantec, Kimley-Horn, Cardno, WSP, LJA, SMEC, Langan International, SRK Consulting and many more engineering firms worldwide.

CivilGEO develops advanced engineering and environmental modeling software for civil engineers worldwide. Consulting engineering organizations, public utilities, government agencies, and educational universities rely on CivilGEO’s software to engineer, design and build the world’s infrastructure. Continuous research and development are key to success; CivilGEO's flagship software product, GeoHECRAS improves constantly to respond to the needs of working professionals and incorporate the most robust and necessary functionality. The result is that CivilGEO’s software empowers thousands of engineers to competitively plan, manage, design, operate, and sustain highly efficient and reliable infrastructure systems.


GeoHECRAS significantly speeds up HEC-RAS model creation and review, producing better and more accurate results. Rapidly construct HEC-RAS models from a variety of data sources. Accelerate engineering workflow and streamline analysis review. Compute water surface profiles for steady and unsteady flow models, bridge and culvert roadway crossings, FEMA floodplain encroachments, stream restorations, inline reservoir structures, off-channel storage areas, and much more.

AutoCAD, MicroStation & ESRI ArcGIS Compatible Graphical Interface to HEC-RAS 

GeoHECRAS is an AutoCAD, MicroStation and ESRI ArcGIS compatible interactive 2D/3D graphical user interface data wrapper to the US Army Corps of Engineers HEC-RAS software.

Import a variety of different data quickly and easily into HEC-RAS

Import existing Army Corps HEC-RAS models and quickly georeference them to real-world maps using included georeferencing tools.

Work simultaneously on multiple HEC-RAS models

Work with multiple HEC-RAS projects simultaneously using the Multiple Document Interface (MDI), including copying and pasting of cross sections and other data between HEC-RAS projects.

Easy to Learn and Use

Interact graphically with all HEC-RAS model elements. Effortlessly create and edit cross sections, bridge and culvert roadway crossings, ineffective flow areas and other model elements by clicking and dragging. Uncomplicated dialog boxes allow easy data entry and review.

Work Directly on the Map

Blend Google or Bing online maps and high-resolution aerial imagery files directly into the HEC-RAS model. Quickly and easily georeference existing HEC-RAS models to background maps, AutoCAD and MicroStation drawings, or ArcGIS map data.

CAD & GIS Integration

Integrate HEC-RAS directly with AutoCAD drawing files, Bentley MicroStation drawing files and ESRI ArcGIS map data. Export completed HEC-RAS models and results to AutoCAD (including AutoCAD Civil 3D and Map 3D), MicroStation and ESRI ArcGIS.

Digital Terrain Cross Section Cutting

Extract HEC-RAS cross sections from 3D digital elevation terrain data. Utilize AutoCAD Civil 3D surfaces, MicroStation surfaces, contours, TINs, DTMs, DEMs, survey points, LiDAR, and other external digital elevation terrain data.

Floodplain and Floodway Mapping

Generate floodplain and floodway mapping from HEC-RAS results and 3D digital elevation terrain data. Export results directly to AutoCAD (including AutoCAD Civil 3D and Map 3D), Bentley MicroStation, and ESRI ArcGIS, as well as publish to PDF.

1D and 2D Flow Models

Quickly build 1D and 2D HEC-RAS models using the provided CAD/GIS tools that are integrated within an easy to understand user interface. Perform 1D steady flow and unsteady flow modeling, 2D unsteady flow modeling and combined 1D and 2D unsteady flow modeling. Complex 2D modeling, such as 2D bridge modeling and 2D dam breach modeling, can be handled with ease.

2D Mesh Generation and Refinement

Create either rectangular or adaptive meshes, depending upon the project requirements. Quickly insert obstructions—such as bridge piers, bridge abutments, and flow training structures—to model complex 2D modeling conditions. Quickly modify 2D flow area mesh elements using the provided mesh editing tools. Generate and merge terrain elevation surfaces from multiple sources, such as LiDAR, bathymetric survey, surveyed cross sections, elevation grids, TINs and more.

Included Land Use Coverage

Complete land use coverage is provided for the USA at an approximate 100 x 100-foot grid cell size. This makes it extremely easy to assign Manning’s roughness values to the HEC-RAS model.

Full HEC-RAS Model Support

Compute HEC-RAS steady and unsteady flow results directly within the software, no external data processing required. Read and write standard US Army Corps HEC-RAS data files, ready for regulatory agency submittal.

Automated GIS Mapping Functions

Define bank stations, flow lengths, ineffective flow areas, conveyance obstructions, levees and other riverine modeling data from CAD and GIS data. Assign cross section Manning’s roughness using GIS polygons or orthophoto base map image processing.

Integrated Cloud-Based Mapping Services

Utilize world-wide high resolution 3D digital elevation terrain data from map services for automated cross section extraction and creation of flood maps. Utilize web-based mapping services for aerial orthophotos, FEMA flood maps, watershed delineation, river centerline alignment, and more.

What-If Scenario Manager Analysis

Compare different engineering models, such as existing and proposed bridges, river realignments and restorations, floodplain encroachments, and more. This capability allows stakeholders to evaluate alternatives, allowing you to consider more innovative and environmentally sensitive designs.

Unlimited Undo and Redo

Correct mistakes easily with unlimited Undo and Redo capability. Experiment with different engineering and GIS decisions. Rollback changes one at a time or select a group of changes from a visual selection list.

2D & 3D Viewing and Editing

Shift seamlessly between 2D and 3D viewing perspectives to more clearly identify modeling issues and make changes. Freely rotate, pan, zoom, and fly through the model to any perspective to review cross sections, bridge structures, culverts, levees, ineffective flow areas, and more.


MDI Multiple Model Editing

Load, edit, and run multiple HEC-RAS models simultaneously. The Multiple Document Interface (MDI) allows easy copying and pasting between models, quick comparisons of input data and results between scenarios, and other modeling efficiencies. Models can be displayed in tiled windows or tabbed views, providing greater productivity.

More Accurate Models

Reduce time wasted with imprecise data. Easily integrate field collected data in varying formats along with CAD and GIS data to update the HEC-RAS model to accurately reflect field conditions.


Purpose-Built HEC‑RAS Tools

HEC-RAS specific tools offer a more efficient way to create and analyze rivers, streams, bridges, culverts, inline structures, and more. Define cross sections that dynamically update as terrain data is changed. Quickly define levees, ineffective flow areas, conveyance obstructions, roughness subareas using specialized HEC-RAS tools.

Complete Reporting

Complete HEC-RAS reporting is provided, including cross section plots, cross section tables, profile plots, profile tables,

time series graphs, and more. Because the report data is derived directly from the HEC-RAS model, reports can easily be updated, providing quicker feedback as changes are made.

Stunning Visualizations

Create stunning visualizations directly from the software of different design alternatives to help better understand the impact of the design on the community and the surrounding environment. Publish the HEC-RAS model directly to Google Earth for even greater visualization and understanding of the project.

Powerful 64-bit, Multi-Core Support

Handle larger projects with powerful 64-bit, multi-core, parallel processing support. This improves performance and stability for memory-intensive tasks—including running HEC-RAS simulations faster.

Expert Technical Support

Toll-free unlimited technical support by experienced HEC-RAS modelers is just a phone call away. Quickly resolve your HEC-RAS modeling questions and complete your engineering projects on time—skilled, professional engineers are available to assist you.

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