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PT / PortuguêsAdding an AutoCAD Drawing
This video details how to add and georeference an AutoCAD drawing file for a HEC‑RAS model. There are two ways of...
Importing Data
28 ArticlesAdding an Elevation Layer
GeoHECRAS can construct an elevation terrain surface from online elevation data sources or through a local elevation data file. Adding...
Assign River Reaches command
The Assign River Reaches command enables the user to quickly assign a polyline as a river reach. Follow these steps...
Assigning Survey Data to HEC‑RAS Cross Sections
LiDAR has become an established method for collecting very dense and accurate elevation data across landscapes, shallow-water areas, and project sites....
AutoCAD Drawing as Terrain Elevation Data
AutoCAD drawing files can be used as a terrain elevation data source in the following formats: Contour lines Elevation points...
Convert Elevations command
The Convert Elevations command allows elevation grids (also known as digital elevation models, DEMs, and raster elevation grids) to be...
Editing of River Names and Reach Names
The user can rename a river and/or reach by double clicking on the reach name on the Map View. There...
ESRI TIN to Elevation Contour Shapefile
This article demonstrates how to convert an ESRI TIN file to an elevation contour shapefile using ArcGIS and the 3D Analyst and...
External editing of HEC‑RAS models
Often users will export a HEC‑RAS model from GeoHECRAS for project submission. During the process, changes might be made to...
Georeferencing a HEC‑RAS Model to a Map Location
When importing a HEC‑RAS model, the imported model will be assigned to a local coordinate reference system. If the project...
Georeferencing a HEC‑RAS Model to a River Alignment
This video tutorial shows you how to georeference a non-georeferenced HEC‑RAS model to a river alignment in real-world coordinates using...
Georeferencing Aerial Imagery that is Not Georeferenced
Georeferencing orthomosaic and other aerial imagery can have issues if no projection information is associated with the image file. When...
HEC-RAS 2D Mesh Generation Errors & Corrections
Creating a HEC-RAS 2D mesh that correctly represents the flow area being modelled can take some time to add the...
HEC‑RAS Import Base Engine Troubleshooting
This article describes how to fix the HEC‑RAS base engine if you cannot get a HEC‑RAS model imported. When GeoHECRAS imports a...
How to Add a GIS Shapefile to a HEC-RAS Model?
This video details how to add a GIS shapefile for a HEC‑RAS model. Follow these steps to add a GIS shapefile to a...
How to Convert ESRI TIN to Elevation Raster?
This article and video demonstrates how to convert an ESRI TIN file to an elevation raster using ArcGIS and the...
How to Import a HEC-2 Model in HEC-RAS?
The software can import HEC‑2 models with the same import capabilities that the Army Corps of Engineers HEC‑RAS software provides....
How to Import a HEC-RAS Model?
GeoHECRAS is a data wrapper to the HEC‑RAS software. It is quite easy to import any existing HEC‑RAS model. Follow these...
Import Cross Section Geometry command
The Import Cross Section Geometry command is used to import surveyed cross section geometry from a wide variety of file...
Import River Reach Alignment command
The Input | Cross Sections | Import River Reach Alignment command allows the software to import surveyed river reach alignment from a wide...
Importing an ESRI TIN elevation dataset
A triangulated irregular network (TIN) is a digital data structure used to representation of a terrain surface. A TIN is a...
Importing MicroStation Terrain Surfaces
With so many civil engineering software applications available, each with their own proprietary database structures, data interoperability has became a major...
Reload Layer command
The software allows the user to reload a layer by right-clicking on the layer and selecting the Reload Layer command....
Restoring a Map View Coordinate Reference System
After importing data that does not have an assigned coordinate reference system (CRS), the data will be displayed in its...
Setting Model Units (US/Metric)
GeoHECRAS fully supports both Metric (SI) and US units. Default Project Units The software will auto detect the country that the...
Terrain Elevation Geometry Sources
GeoHECRAS can utilize elevation data for creating and generating: Terrain surfaces Cross sections Roadway crossing high chord geometry Inline structure...
Types of External Data that can be imported
GeoHECRAS can utilize a variety of data: HEC‑RAS Projects (*.prj) AutoCAD and Bentley MicroStation Drawing Files (*.dwg, *.dxf) AutoCAD Civil 3D...
Viewing & Editing GIS attribute data using Data Explorer
GIS software uses two basic types of data: Spatial Data — containing the coordinates and identifying information describing the map itself...
