Map Data Layers Panel

22 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...

Attribute Table command

GeoHECRAS allows the user to easily review and edit GIS attribute data using the Attribute Table command. The Attribute Table...

FEMA Flood Data command

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

FEMA NFHL Download command

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

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...

Layer Display Order

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

Merge DEMs command

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

Process LIDAR command

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

Reload Layer command

The software allows the user to reload a layer by right-clicking on the layer and selecting the Reload Layer command....

Rivers and Streams command

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

Terrain Elevation Geometry Sources

GeoHECRAS can utilize elevation data for creating and generating: Terrain surfaces Cross sections Roadway crossing high chord geometry Inline structure...

Understanding the User Interface

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

USGS StreamStats command

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

Watershed Boundaries command

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

Zoom To command

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