DC Water deploys drones to inspect Potomac interceptor after sewage spill
DC Water is deploying drones equipped with LiDAR technology to assess the condition of the Potomac interceptor following a major sewer collapse earlier this year.
The aerial inspections will focus on the 54-mile interceptor system, a critical piece of the region’s wastewater infrastructure that runs along the Potomac River, WUSA9 News reported. The effort follows a Jan. 19 failure that released an estimated 250 million gallons of sewage after a blockage caused by large rocks and construction debris within the pipe.
Crews will conduct drone flights between March 26 and early April, using ground markers to support high-resolution mapping of surface conditions, according to WUSA9. The LiDAR-based surveys are expected to provide detailed 3D data on terrain, structures and potential geotechnical risks that could affect the pipeline.
The inspection marks the first time DC Water has used drone-based LiDAR technology for this system, supplementing traditional inspection methods that have relied primarily on satellite imagery and in-pipe assessments.
Data collected from the aerial surveys will inform a broader, long-term rehabilitation program estimated at $625 million, as utilities work to address aging infrastructure and reduce the risk of future failures along the Potomac interceptor corridor.
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