Hardey Group

Lidar and Terrain Mapping

Lidar scanning produces detailed models of terrain, buildings and vegetation. We have access to thousands of acres of lidar scans across the United States. We can download and convert the lidar data into a 3d model of your site. Lidar scans can often penetrate vegetation when traditional methods require clearing the site. If your site does not have Lidar data currently available we can use USGS terrain mapping data to produce a similar model.

This data is used to create a base model for conceptual layout, and to determine overall storm flow and geography. When combined with traditional surveying methods an accurate topo map can be produced quickly and accurately.

Photogrammetry and Orthophotos

Aerial photographs of the project site can be combined to produce accurate 3d models of the site. These models have full color images pulled from the photographs to help map the site.

An orthophoto is produced by stitching together many aerial photographs to produce an aerial map that is not distorted by a camera lense. These are much more accurate for site mapping and measurement than a single aerial photo. Orthophotos are created at the same time as our traditional on-site surveys and are combined in the drawing.

Traditional Surveying and GPS

The most accurate survey method is to use a Total Station, which measures angles and distances between points to extreme accuracy. When pinpoint precision is called for we use a robotic station that allows for rapid, accurate measurements of critical areas of a site.

When a large or irregular area is required to be surveyed, we can use a GPS receiver to record topography data. This data is often combined with the other survey methods to produce a high-quality topographic map and 3d model.


HOUSTON TX: (832) 426-7099 - MEDFORD OR (541) 772-6880 - EMAIL: INFO@HARDEYGROUP.COM