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GeoHECRAS 2D

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Rapidly construct 2D HEC-RAS models
from a variety of data sources
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GeoHECRAS 2D®

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Significantly speeds up 2D HEC-RAS model creation and review
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GeoHECRAS 2D

Overview
Overview

What is GeoHECRAS 2D?

GeoHECRAS 2D significantly speeds up creation and review of 1D and 2D HEC-RAS models, producing better and more accurate results. 2D bridge modeling, FEMA 2D floodplain encroachment modeling, 2D dam failure modeling and 2D stream restorations are just some of the projects that can be quickly completed using GeoHECRAS 2D. Automatic mesh creation, automatic bad element fixing, adaptive meshing, 2D conveyance obstructions and automatic mesh refinement greatly increase engineering productivity. Also, because GeoHECRAS 2D is a data wrapper to the USACE HEC-RAS software, everything is done within HEC-RAS using GeoHECRAS’ AutoCAD compatible graphical user interface.

See More Features
System Requirements

GeoHECRAS 2D Overview Video

GeoHECRAS 2D Overview (video 01:12 minutes)

Work Faster with Automated Workflows

AutoCAD, MicroStation & ESRI ArcGIS compatible graphical interface to HEC-RAS

GeoHECRAS 2D 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.

Workflows
The Draw 2D Mesh Face command allows the user to draw a mesh patch (or mesh template) and direct the software to honor the drawn patch when generating the mesh. The user can draw element face lines and construct 3-sided and 4-sided mesh elements to make a mesh patch. The command gives the user the ability to control how the HEC-RAS 2D cells are created in areas where a high level of detail is required, such as when 2D cells need to be placed and aligned to satisfy culvert inlet and outlet locations.

Draw 2D Mesh Faces

The Draw 2D Mesh Face command allows the user to draw a mesh patch (or mesh template) and direct the software to honor the drawn patch when generating the mesh.

The 2D Floodplain Encroachment command automates the placement and analysis of floodplain encroachments along the river reach when performing a 2D steady or unsteady flow computation. This allows the modeler to have a better understanding of the true flow effects when attempting to determine the floodway in a complex flow situation. The modeler can examine the VxD (velocity x depth) factor, as this directly indicates greater flood hazard and hydraulic importance.

2D Floodplain Encroachments

The 2D Floodplain Encroachment command automates the placement and analysis of floodplain encroachments along the river reach when performing a 2D steady or unsteady flow computation.

In addition to HEC-RAS’ default rectangular (structured) 2D computational mesh, the software can create an adaptive 2D mesh to better represent more complicated 2D flow conditions and structures. The software will automatically refine the 2D mesh where required, such as at a roadway crossing bridge opening.

Adaptive 2D Mesh

In addition to HEC-RAS’ default rectangular (structured) 2D computational mesh, the software can create an adaptive 2D mesh to better represent more complicated 2D flow conditions and structures.

See More Workflows

See how engineers are using GeoHECRAS 2D

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CRAFTON TULL
“Why doesn’t HEC-RAS do this?” was a question Anna Negrete of Crafton Tull would often ask before she started using GeoHECRAS…
  View

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INTEGRATED ENGINEERING
Water resource and project engineers at Integrated Engineering PLLC describe the substantial time and cost savings gained with use of GeoHECRAS…
  View

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FTN ASSOCIATES
With GeoHECRAS, Lee Beshoner of FTN Associates explains that he can efficiently create surface files and generate model results quickly, effectively…
  View

See More Stories

Features
Features
The Draw 2D Mesh Face command allows the user to draw a mesh patch (or mesh template) and direct the software to honor the drawn patch when generating the mesh. The user can draw element face lines and construct 3-sided and 4-sided mesh elements to make a mesh patch. The command gives the user the ability to control how the HEC-RAS 2D cells are created in areas where a high level of detail is required, such as when 2D cells need to be placed and aligned to satisfy culvert inlet and outlet locations.

Draw 2D Mesh Faces

The Draw 2D Mesh Face command allows the user to draw a mesh patch (or mesh template) and direct the software to honor the drawn patch when generating the mesh.

The 2D Floodplain Encroachment command automates the placement and analysis of floodplain encroachments along the river reach when performing a 2D steady or unsteady flow computation. This allows the modeler to have a better understanding of the true flow effects when attempting to determine the floodway in a complex flow situation. The modeler can examine the VxD (velocity x depth) factor, as this directly indicates greater flood hazard and hydraulic importance.

2D Floodplain Encroachments

The 2D Floodplain Encroachment command automates the placement and analysis of floodplain encroachments along the river reach when performing a 2D steady or unsteady flow computation.

In addition to HEC-RAS’ default rectangular (structured) 2D computational mesh, the software can create an adaptive 2D mesh to better represent more complicated 2D flow conditions and structures. The software will automatically refine the 2D mesh where required, such as at a roadway crossing bridge opening.

Adaptive 2D Mesh

In addition to HEC-RAS’ default rectangular (structured) 2D computational mesh, the software can create an adaptive 2D mesh to better represent more complicated 2D flow conditions and structures.

Plot moving particles on the flood map to represent the flow field for both 1D river reaches and 2D flow areas. The size and speed of the particle is adjusted to represent the velocity at that point. Particle tracking maps can be created for both steady flow and unsteady flow models.

Particle Tracking Maps

Plot moving particles on the flood map to represent the flow field for both 1D river reaches and 2D flow areas.

Incorporate 2D flow training structures for river and stream restoration projects. Define river structural measures to improve the flow of the river and maintain the channel within the floodway, preventing and reducing river channel migration during flood events. Protect critical infrastructure, like bridge roadway crossings, by directing river flow through the bridge opening during extreme flow events

2D Flow Training Structures

Incorporate 2D flow training structures for river and stream restoration projects. Define river structural measures to improve the flow of the river and maintain the channel within the floodway, preventing and reducing river channel migration during flood events.

Ineffective flow areas can be assigned to the 2D mesh using polylines or polygons. Alternatively, draw ineffective flow areas on the Map View. For example, stagnant flow areas at roadway crossings can be stamped into the 2D mesh to account for the ineffective flow area. The software will automatically refine the 2D flow area to incorporate the ineffective flow area shape.

2D Ineffective Flow Areas

Ineffective flow areas can be assigned to the 2D mesh using polylines or polygons. Alternatively, draw ineffective flow areas on the Map View.

Conveyance obstructions can be assigned to the 2D mesh using polylines or polygons. Alternatively, draw conveyance obstructions on the Map View. For example, buildings and other structures can be stamped into the 2D mesh as conveyance obstructions to account for flow blockage. The software will automatically refine the 2D flow area to incorporate the conveyance obstruction shape.

2D Conveyance Obstructions

Conveyance obstructions can be assigned to the 2D mesh using polylines or polygons. Alternatively, draw conveyance obstructions on the Map View.

The Army Corps of Engineers HEC-RAS software generates 2D meshes that contain elements that are marked “bad” and require manually fixing by the user. GeoHECRAS will automatically detect and fix these bad elements without requiring any interaction by the user.

Auto Fix 2D Mesh Bad Elements

The Army Corps of Engineers HEC-RAS software generates 2D meshes that contain elements that are marked “bad” and require manually fixing by the user.

As you modify the 2D mesh by inserting additional elements, moving elements, and performing other mesh element editing, the software remembers these edits. Then, the next time the 2D mesh is rebuilt, these user-defined changes are automatically incorporated into the mesh.

Remember 2D Mesh User Edits

As you modify the 2D mesh by inserting additional elements, moving elements, and performing other mesh element editing, the software remembers these edits.

Assign land cover polygons and/or National Land Cover Database (NLCD) data as Manning’s roughness to cross sections and 2D flow areas. The National Land Cover Database provides land cover data for the entire United States. The software can dynamically download a NLCD raster land cover grid for the area being modeled. Each 75ft x 75ft land cover grid cell represents a specific land type. Up to 20 different land types and corresponding Manning’s roughness values are provided.

Assign Land Cover Data

Assign land cover polygons and/or National Land Cover Database (NLCD) data as Manning’s roughness to cross sections and 2D flow areas.

Export flood map animations to Google Earth. This is helpful for presentations on flood risk assessment and flood management.

Google Earth Map Animation

Export flood map animations to Google Earth. This is helpful for presentations on flood risk assessment and flood management.

For unsteady flow models, the flood map can be animated to show how it changes with time. The animation speed can be adjusted, as well as set up to loop continuously. The final animation can be recorded to a video. In addition to animating the flood results, options are available to show the extent of the maximum and minimum flood areas.

Animated Flood Maps

For unsteady flow models, the flood map can be animated to show how it changes with time.

Plot velocity vectors on the flood map to represent the flow field for both 1D river reaches and 2D flow areas. The velocity vector length is adjusted to represent the velocity at that point. Velocity vector maps can be created for both steady flow and unsteady flow models.

Velocity Vector Maps

Plot velocity vectors on the flood map to represent the flow field for both 1D river reaches and 2D flow areas.

Create 2D flood hazard maps, including:Flood Arrival Time,Depth x Velocity,Depth x Velocity²,Flood Duration,Flood Recession Time,,% Time Inundated,Velocity.

Flood Hazard Maps

Create 2D flood hazard maps, including:

  • Flood Arrival Time
  • Depth x Velocity
  • Depth x Velocity²
  • Flood Duration
  • Flood Recession Time
  • % Time Inundated
  • Velocity
Stamp bridge piers into the 2D mesh for the following pier shapes: Circular pier, Rectangular round nosed pier, Rectangular sharp nosed pier, Rectangular square nosed pier, Square pier. Interactively place and rotate the bridge piers relative to the roadway crossing.

2D Bridge Analysis

Stamp bridge piers into the 2D mesh for the following pier shapes:

  • Circular pier
  • Rectangular round nosed pier
  • Rectangular sharp nosed pier
  • Rectangular square nosed pier
  • Square pier

See More Workflows

Additional Features
Additional Features
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.

Full HEC-RAS Model Support

Compute HEC-RAS steady and unsteady flow results directly within the software.

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.

Unlimited Undo and Redo

Correct mistakes easily with unlimited Undo and Redo capability.

Toll-free unlimited technical support by experienced HEC-RAS modelers is just a phone call away. Our technical support team is available 24-hours/day Monday-Friday. Quickly resolve your HEC-RAS modeling questions and complete your engineering projects on time—our skilled, professional engineers are here to assist you.

Expert Technical Support

Toll-free unlimited technical support by experienced HEC-RAS modelers is just a phone call away. Our technical support team is available 24-hours/day Monday-Friday, and by email on weekends.

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.

Powerful 64-bit, Multi-Core Support

Handle larger projects with powerful 64-bit, multi-core, parallel processing support.

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.

Complete Reporting

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

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.

What-If Scenario Manager Analysis

Compare different engineering models, such as existing and proposed bridges, river realignments and restorations, and more.

Customer Stories
Customer Stories

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CRAFTON TULL
“Why doesn’t HEC-RAS do this?” was a question Anna Negrete of CEI Engineering Associates, Inc. (formerly at Crafton Tull) would often ask before she started using GeoHECRAS…
  View

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INTEGRATED ENGINEERING
Water resource and project engineers at Integrated Engineering PLLC describe the substantial time and cost savings gained with use of GeoHECRAS…
  View

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FTN ASSOCIATES
With GeoHECRAS, Lee Beshoner of FTN Associates explains that he can efficiently create surface files and generate model results quickly, effectively…
  View

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BOLTON & MENK
Company engineers at Bolton & Menk praise GeoHECRAS’s ability to combine editing functionality, model manipulation and output in one integrated package…
  View

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LJA ENGINEERING
The firm of LJA Engineering struggled for years to match up AutoCAD survey information in a surface coordinate system with a GIS coordinate system before switching to GeoHECRAS…
  View

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THOUVENOT, WADE & MOERCHEN
Engineers at Thouvenot, Wade & Moerchen praise GeoHECRAS’s Scenario Manager tool, the ability to quickly set up surface geometries for hydraulic models, and…
  View

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THE H.L. TURNER GROUP INC.
Engineers at H.L. Turner Group, Inc. observe that prior to using GeoHECRAS, the time needed to create a geometry file for a model was significant and could…
  View

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LYON ENGINEERING
Brian Bucholtz of Lyon Engineering emphasizes how the GeoHECRAS software “pulls everything together” and allows him to seamlessly input data and project…
  View

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MORRISON MAIERLE
Water resource engineers at Morrison Maierle discuss their ability to adjust a river model’s geometry very efficiently using GeoHECRAS…
  View

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ILIFA AFRICA ENGINEERS
An engineering and land surveying firm that works extensively in floodplain delineation appreciates that GeoHECRAS brings base information together in one…
  View

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JE FULLER
JE Fuller tackles drainage projects all over the world as well as in the U.S. Chris Rod, engineer for over 40 years, appreciates that GeoHECRAS runs independently…
  View

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GRUPPE WASSER
Prior to use of GeoHECRAS, civil engineer Marcus Prantl had difficulty creating accurate surface terrain, as well as delineating river reaches and bridges…
  View

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BEPG
Denis Rouselle, engineer in charge of hydraulic studies, structural design and floodplain management studies in Nancy, France, confirms that prior to using GeoHECRAS…
  View

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BARBAGELATA INGENIERÍA S.A.
Engineer Vanessa Gimenez explains her firms’ difficulty generating pre-processed and post-processed data for the many hydrologic 2D models developed by…
  View

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ARTELIA MADAGASCAR
The time it took to enter data, run programs independently of one another, and then edit the output often left little time to review the results of river…
  View
Success Stories
Success Stories

Bolton & Menk Case Study

BOLTON & MENK
Company engineers at Bolton & Menk praise GeoHECRAS’s ability to combine editing functionality, model manipulation and output in one integrated package…
Read More

JE Fuller Case Study

JE FULLER
JE Fuller tackles drainage projects all over the world as well as in the U.S. Chris Rod, engineer for over 40 years, appreciates that GeoHECRAS runs independently…
Read More

FTN Associates Case Study

FTN ASSOCIATES
With GeoHECRAS, Lee Beshoner of FTN Associates explains that he can efficiently create surface files and generate model results quickly, effectively…
Read More

Kimley Horn Case Study

KIMLEY-HORN AND ASSOCIATES, INC.
Unlike the traditional USACE HEC-RAS software which Kimley-Horn had used historically, the use of GeoHECRAS’ surface generation tools on this large project….
Read More

KPA Engineers Case Study

KPA ENGINEERS
Prior to using GeoHECRAS, KPA engineers would have to switch back and forth between various CAD and GIS programs and the U.S. Army Corps of Engineers (USACOE)…
Read More

Stormwater Management Consulting Case Study

STORMWATER MANAGEMENT CONSULTING
The use of GeoHECRAS for floodplain delineation has resulted in significant time and cost savings as well. Skupien notes that….
Read More

Aquafor Beech Case Study

AQUAFOR BEECH LTD
The compatibility of GeoHECRAS with GIS and other applications like PCSWMM makes the pre- and post-processing aspects….
Read More

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GeoHECRAS is recognized as the top Civil Engineering Design Software with an average of 4.8 out of 5 rating from over 150+ real user reviews on G2.

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HEC-RAS 2D FLOW MODELING

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