A government entity was undertaking a massive irrigation project covering more than 4,500 square kilometers. The full scope of work included survey, design, procurement, construction, and installation of pumping systems. To start the project, a massive land survey of the entire project area was required to account for terrain features that could impede construction progress. The project also necessitated a bathymetric survey to understand the bodies of water.
Traditional means of land surveying would have been problematic due to the size of the land area and challenging geography – with elevation variations of up to 300 meters. Dense forest areas also posed challenges, with wildlife and thick vegetation making it unsafe for manual survey. Also, because of the variety of the landscape, the team was running into challenges related to gaining permits and permissions for access in some areas.
To overcome these challenges, the project team opted for helicopter-based light detection and ranging (LiDAR) for bathymetric and geographic surveys. While the raw LiDAR data comprised everything on the ground, including irrelevant information such as buildings and power lines, the post-processed data used pre-determined algorithms to remove these features. The concept of digital twin was achieved for this project using enterprise GIS dashboards.
Accurate geographic data prior to and during construction is critical to project success. By working with the Geospatial NxT team, the client achieved multiple benefits:
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