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

The Adjust Elevations command is used to set or adjust elevations for a portion of an existing elevation grid. The user...

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

The Compass Rose shows the orientation of the Map View relative to North. Placing the cursor over the Compass Rose...

GeoHECRAS software uses OpenStreetMap (OSM) data to construct 3D buildings on the Map View. The Show 3D Buildings command will...

The software allows you to copy and paste model elements within a project and even between projects when two or...

The software allows you to copy and paste model elements between projects. For example, select a cross section from one...

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

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

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

The user can rename a river and/or reach by double clicking on the reach name on the Map View. There...

The software can display the FEMA digital Flood Insurance Rate Map (FIRM) directly on the Map View. It is required...

GeoHECRAS allows the user to download FEMA National Flood Hazard Layer (NFHL) as shapefile data by using the FEMA Flood...

When importing a HEC‑RAS model, the imported model will be assigned to a local coordinate reference system. If the project...

This video tutorial shows you how to georeference a non-georeferenced HEC‑RAS model to a river alignment in real-world coordinates using...

Georeferencing orthomosaic and other aerial imagery can have issues if no projection information is associated with the image file. When...

The software allows the user to change the display properties of the following HEC‑RAS elements shown on the Map View: River...

The Input | Cross Sections | Import River Reach Alignment command allows the software to import surveyed river reach alignment from a wide...

The order of layers listed in the Map Data Layers panel determines how layers are drawn on a map. The...

While in 2D view mode, the Scale Bar provides a reference for estimating distances on 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...

After importing data that does not have an assigned coordinate reference system (CRS), the data will be displayed in its...

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

The Rivers & Streams command displays the National Hydrograph Dataset (NHD) from the USGS web map service, showing river and...

The Stamp Geometry command is used to draw a polyline and have the software automatically sample the cross sectional geometry at...

While in 3D view mode, the Vertical Exaggeration Scale allows the user to adjust the amount of vertical exaggeration of the...

The toolbar provides Map View commands, including: 2D/3D – Switches the Map View from 2D to 3D view mode. Select...

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

The USGS StreamStats command allows the user to click on a stream location in the Map View, and the software...

The Watershed Boundaries command displays the Watershed Boundary Dataset (WBD) from the USGS web map service, which shows the watershed...

The software allows you to work with multiple projects at the same time. The tabbed window interface allows you to...

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

There are a variety of ways to zoom, pan, and rotate the view within the Map View.  Dynamic Zoom Tool...