Getting Started

36 Articles

Adding a Base Map Layer

A base map layer provides high-quality background aerial and other imagery from different online map providers to add context to...

Adding 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...

Assign River Reaches command

The Assign River Reaches command enables the user to quickly assign a polyline as a river reach. Follow these steps...

Automated GIS Mapping Functions

GeoHECRAS provides several GIS mapping functions that will automatically map GIS attribute data to the HEC‑RAS model. These functions include:...

Common HEC‑RAS Workflows

GeoHECRAS can perform the following HEC‑RAS workflows: Floodplain Analysis and Mapping Floodplain Encroachment Studies Roadway Crossing (Bridge & Culvert) Design...

Crop Base Map command

The Crop Base Map command crops the base map (i.e., Google Map, Bing Map, etc.) to the elevation terrain data...

Ctrl+R : Repeat Your Last Action

Many times you find yourself having to execute the same processing command repeatedly. For example, using the raindrop flow path...

Digitizing Elements

Digitizing (or drawing) elements on the Map View can be performed using the various HEC‑RAS specific commands (e.g., Draw River...

Draw River Reaches command

The Input | River Reaches | Draw River Reaches command enables the user to quickly draw a river reach on the Map View....

Floating Network Licensing

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Generate Contours command

The Generate Contours command creates equally spaced contour lines from loaded elevation grid data. The user can specify major and...

Generate Terrain command

Digital terrain surfaces can be used for the following tasks: Extracting cross section geometry Computing 2D flow areas Determining bank...

HEC‑RAS Modeling Best Practices

The following best practices should be used when defining, analyzing, and reviewing a HEC‑RAS model: The model results should be...

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 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...

Merge DEMs command

The Merge DEMs command is used to merge together multiple elevation grids (sometimes called rasters, DEMs or Digital Elevation Models)...

Printing the Map View

It’s easy to create professional print outs of HEC‑RAS models in GeoHECRAS, as well as export the HEC‑RAS project to...

Process LIDAR command

The Process LIDAR command provides numerous advanced LIDAR processing tools, including point cloud classification filtering, extraction of buildings and other...

Reverse River Reach command

The river flow direction is defined by digitizing the river reach in a downstream direction. The software will display a...

Selection Modes

Selecting multiple elements can get frustrating, especially if the project has a lot of complex data loaded. To simplify this,...

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...

Understanding the User Interface

The GeoHECRAS user interface has several features that will be examined in detail in the following sections. The user interface...

Undo and Redo Commands

The Undo and Redo commands are complimentary and can be quite helpful when working on an engineering project. The important...

Zoom To command

The Zoom To command enables the user to search and zoom to a specific location or address on the Map...