Elevation data are based on terrain data collected by the NASA Shuttle Radar Topography Mission (SRTM) [Exit EPA]. To generate an elevation profile, perform the following:

Click the ruler icon in the Measure tab in the Elevation Profile pop-up.
The units dropdown appears to the right of the Distance tool and provides a selection of measurement units for the transect. Select the desired units.

Note: Upon execution, the resulting elevation units will correspond to the units you select here for the transect line. Selecting a metric measurement unit (kilometers or meters) will return elevation units in meters. Selecting an Imperial measurement unit (miles, yards, or feet) will return elevation units in Imperial units.

Create a transect line in the map:
- Single mouse click starts the transect and creates vertices along the transect.
- Double mouse click ends the transect line.

The transect will appear as a blue line with markers indicating the beginning and ending points, as well as vertices along the profile transect.

Upon completing the transect, the elevation profile graph displays in the Profile Result tab in the Elevation Profile pop-up. Hover the mouse pointer over the profile graph to see the distance along the profile and the elevation value at a particular point, marked with a red X. The red X also appears along the transect line showing the relationship between the graph and the location on the map. Hover over the blue circular “i” icon (Profile Information) in the pop-up to get statistics about the profile.