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General Information
General information on how to use GeoHECRAS in constructing, editing, analyzing, and reviewing HEC-RAS models. Includes tutorials, reference articles, videos, and more.
- Common HEC‑RAS Workflows
- HEC-RAS Minor Loss Coefficients
- How is GeoHECRAS different than Civil 3D River and Flood Analysis?
- How is GeoHECRAS different than HEC‑GeoRAS?
- How is GeoHECRAS different than HEC‑RAS?
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Getting Started
Getting started information on how to use GeoHECRAS in constructing, editing, analyzing, and reviewing HEC-RAS models. Includes tutorials, reference articles, videos, and more.
- Adding a Base Map Layer
- Adding an AutoCAD Drawing
- Assign River Reaches command
- Assigning a Coordinate Reference System
- Automated GIS Mapping Functions
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Importing Data
Information on how to import external data into GeoHECRAS for constructing, editing, analyzing, and reviewing HEC-RAS models. Includes tutorials, reference articles, videos, and more.
- Adding an AutoCAD Drawing
- Adding an Elevation Layer
- Assign River Reaches command
- Assigning Survey Data to HEC‑RAS Cross Sections
- AutoCAD Drawing as Terrain Elevation Data
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Exporting Data
Information on how to export HEC-RAS input data and results from GeoHECRAS to AutoCAD, ArcGIS, and more. Includes tutorials, reference articles, videos, and more.
- Construct 3D Buildings from OSM Data
- Crop Base Map command
- Export Cross Sections to CAD command
- Export HEC‑RAS to Shapefiles command
- Exporting a HEC‑RAS Model to Google Earth
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Working with a HEC-RAS Project
Information on how to work with GeoHECRAS in constructing, editing, analyzing, and reviewing HEC-RAS models. Includes tutorials, reference articles, videos, and more.
- 2D Conveyance Obstructions
- 2D Ineffective Flow Areas
- Adding a Base Map Layer
- Adding an AutoCAD Drawing
- Assign Cross Sections command
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HEC-RAS Model Troubleshooting
Description of input and output data to review when troubleshooting a HEC-RAS model. Tips and tricks to assist the new HEC-RAS modeler.
- Creating HEC‑RAS Cross Sections from Elevation Grids
- External editing of HEC‑RAS models
- HEC-RAS 2D Analysis Error – Weir Stationing Not Increasing
- HEC-RAS Bridge Modeling
- HEC‑RAS Analysis Base Engine Troubleshooting
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HEC-RAS Data
Detailed description of HEC-RAS input data and output results, along with tips to consider in constructing a HEC-RAS model.
- 2D Conveyance Obstructions
- 2D Ineffective Flow Areas
- Assign Cross Sections command
- Assign Multiple Cross Sections command
- Assign River Reaches command
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2D Modeling
Information on how to work with GeoHECRAS 2D for 2D flow modeling. Includes tutorials, reference articles, videos, and more.
- 2D Conveyance Obstructions
- 2D Ineffective Flow Areas
- HEC-RAS 2D Analysis Error – Weir Stationing Not Increasing
- HEC-RAS 2D Bridge Modeling
- HEC-RAS Flood Result Raster Grids
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Cross Sections
Instructions on how to construct HEC-RAS cross sections from various mapping and survey data. Includes detailed input data descriptions of cross section parameters.
- 2D Conveyance Obstructions
- 2D Ineffective Flow Areas
- Assign Cross Sections command
- Assign Multiple Cross Sections command
- Assigning Survey Data to HEC‑RAS Cross Sections
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Map Data Layers Panel
Detailed description of the Map Data Layers panel, adding data layers to HEC-RAS in the Map View, creating new data layers, and exporting of HEC-RAS result layers to AutoCAD and ESRI ArcGIS.
- Adding a Base Map Layer
- Adding an AutoCAD Drawing
- Attribute Table command
- FEMA Flood Data command
- FEMA NFHL Download command
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Coordinate Reference Systems
Detailed description on using map coordinate reference systems (CRS) to correctly layout a HEC-RAS engineering model to real world coordinates.
- Assigning a Coordinate Reference System
- Custom Coordinate Reference Systems
- Georeferencing a HEC‑RAS Model to a Map Location
- Georeferencing a HEC‑RAS Model to a River Alignment
- Georeferencing Aerial Imagery that is Not Georeferenced
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AutoCAD Drawings
Detailed instructions on importing AutoCAD Civil 3D drawings and digital terrain models for constructing HEC-RAS engineering models, and exporting AutoCAD drawings containing HEC-RAS model results.
- Adding an AutoCAD Drawing
- AutoCAD Drawing as Terrain Elevation Data
- Export Cross Sections to CAD command
- Generate Contours command
- Generate Terrain command
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Map View
Detailed description of available commands for editing and manipulating HEC-RAS engineering data on the Map View. In addition, commands for viewing, printing, importing and exporting are described.
- Adding a Base Map Layer
- Assign River Reaches command
- Compass Rose and 3D Navigator
- Construct 3D Buildings from OSM Data
- Copying and Pasting Model Elements
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Multiple Document Interface
Detailed instructions on how to interact with multiple engineering models using the multiple document interface (MDI). Learn how to copy and paste model components from one engineering project to another.
- Copying and Pasting Model Elements
- Copying HEC‑RAS Entities from one Project to Another
- Saving All Currently Opened Projects
- Understanding the User Interface
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HEC-RAS Reporting
Detailed description on how to generate HEC-RAS output reports, along with tips to consider when reviewing a HEC-RAS model.
- Construct 3D Buildings from OSM Data
- Crop Base Map command
- Export Cross Sections to CAD command
- Export HEC‑RAS to Shapefiles command
- Exporting a HEC‑RAS Model to Google Earth
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HEC-RAS Computations
Detailed description of HEC-RAS steady flow and unsteady flow computational procedures, along with tips to consider in constructing a HEC-RAS model.
- 2D Conveyance Obstructions
- 2D Ineffective Flow Areas
- Computational Differences Between HEC‑RAS and HEC‑2
- Defining HEC-RAS Storage Areas
- Defining HEC‑RAS Culverts for Fish Passage
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Installation
Detailed instructions for installing and licensing the software, including local and network installations.
- Activating a Product Network License
- Activating a Single User License
- Adding an Exception to Avast Firewall
- Adding an Exception to AVG Firewall
- Adding an Exception to Avira Firewall
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General Troubleshooting
General troubleshooting instructions for installation, licensing, and operation of GeoHECRAS and HEC-RAS. Tips and tricks to assist the new user.
- Adding an Exception to Avast Firewall
- Antivirus Firewall Configuration
- Check-out and Check-in Licensing
- Georeferencing Aerial Imagery that is Not Georeferenced
- HEC-RAS Engine Loading Error
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Keyboard Shortcuts
These articles describe keyboard shortcuts to boost your productivity in developing an engineering model.
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GIS Feature Object Data
Detailed description on importing, exporting, and editing GIS feature object data, such as points, lines, or polygons of common features for HEC-RAS.
- 2D Conveyance Obstructions
- 2D Ineffective Flow Areas
- Attribute Table command
- HEC-RAS Ineffective Flow Areas
- HEC‑RAS Conveyance Obstructions
2D Conveyance Obstructions
GeoHECRAS Knowledge Base
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