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Borrow Pit As-Builts from Sonar and HD LiDAR Fusion

The Borrow Pits

Water storage pits are built to support operations in many industries including oil and gas and agricultural operations. Reliable sources of collected runoff water are critical to many industries and collection points must be monitored and maintained like any other asset. Ranging in size from 50 meters to several hundred on a side and not necessarily having good foot or vehicle access, these pits can be a nuisance to survey with conventional methods.


Stricter new provincial regulations mean that regulatory agencies are now ensuring that proper design parameters were used in the construction of existing pits. It is also possible that companies may acquire or use pits for which they do not have engineering information, as they may not have been involved in the building and design phase.

The Data

Since it is impractical to drain these pits to obtain accurate total depth, slope and total capacities, the use of Unmanned Surface Vehicles (USVs) equipped with Sonar in combination with High Density LiDAR has allowed Skytech to gather these parameters and provide accurate as-builts without the need to empty the storage pits.

The Result

The image above is an example of the High Density aerial LiDAR gathered from one of these pits. This data is then summarized in a short PDF deliverable displaying all critical pit information which has been extracted. Our clients have found this deliverable and the meshing of Sonar and LiDAR capabilities to be extremely useful to accurately show their compliance to the new regulations.

If you need more information in regards to this, or any other service, please do not hesitate to contact us.

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Viva Las LiDAR

The image above showcases an example of mobile LiDAR data, displaying virtually all nearby surface features in great detail. SkyTech gathered this data during a recent mobile LiDAR project in Las Vegas. On the right side of this image the Mirage Hotel is visible, and several other types of structures and features are well resolved, such as palm trees, poles, posts, signs, and pedestrian areas. This collection is from one pass of the vehicle at 60 km per hour, however this data is rich and accurate enough to detect virtually any feature along the road. With technological developments offering increased density, accuracy, and reduced collection costs, this type of data is available to more projects than ever before.

Mobile LiDAR (or mobile laser scanning) is a surveying method involving one or more laser scanners being mounted to a moving vehicle to gather spatial data. There is a wide range of applications for this technology including inspection of road infrastructure and road surface conditions, as well as complete asset management for urban and industrial areas.

With the use of post processing software, and high density data, the extraction and categorization of complex features from basic point clouds is performed, rapidly identifying light poles, intersection features, trees, culvert bases, and road markings. Essentially all features visible to the laser can be identified. This is particularly useful for engineers looking to obtain accurate positional data at a fraction of the cost and turnaround time compared to conventional methods.


For more info, feel free to visit our website or get in touch.

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