Surface water culverts play a vital role in managing stormwater and runoff in towns and cities. Yet, many of these underground assets are neglected due to the difficulty, danger, and cost of inspection. Traditional entry methods are not only slow and hazardous, but often fail to provide the actionable data needed for maintenance and planning.
This is where a drone culvert survey can come into its own.
At DJM Aerial Solutions, we use the Elios 3, an advanced confined space drone equipped with LiDAR, RGB imagery, and a protective cage, to carry out safe, high-resolution surveys of culverts, drains, and pipelines. Our recent Central London culvert inspection project shows just how effective this approach can be.
What Is a Drone Culvert Survey?
A drone culvert survey involves using a specially designed UAV (Unmanned Aerial Vehicle) to navigate and inspect confined underground spaces such as:
Surface water culverts
Drainage tunnels
Box culverts and pipework
Brick or concrete-lined stormwater channels
Instead of relying on confined space entry teams, scaffold, or dewatering systems, a confined space drone like the Elios 3 can fly directly through the culvert, capturing visual and LiDAR data safely and efficiently.
Traditional Challenges with Culvert Inspections
Inspecting culverts with manual methods presents serious limitations:
High safety risks from collapse, low oxygen, or fast-flowing water
Access issues due to narrow, unstable, or flooded entry points
Expensive and time-consuming logistics
Limited data, often just visual notes or basic sketches
In cities like London, space is at a premium—making traditional methods increasingly impractical. A drone culvert survey solves these issues with minimal disruption.
Why the Elios 3 Is Perfect for Culvert Surveys
The Flyability Elios 3 is purpose-built for GPS-denied, confined space inspection. With advanced sensors and a collision-tolerant cage, it’s ideal for navigating culverts, pipes, and drainage systems safely.
Key Capabilities:
LiDAR Sensor – Capture precise 3D point clouds of culvert interiors
4K Visual Camera – Record detailed images and video for structural assessments
Illumination – Built-in lighting for complete visibility in total darkness
Stable Flight – Maintains position even in tight, featureless tunnels
Digital Twin Creation – Combine RGB + LiDAR data for BIM and CAD use
A single drone culvert survey using the Elios 3 can save days of traditional effort and dramatically reduce operational risk.
Case Study: Central London Drone Culvert Survey
We were recently contracted to inspect a surface water culvert in Central London. The structure had no reliable access points, and its internal condition was largely unknown.
Objectives:
Inspect internal walls and joints for degradation
Map silt build-up and flow obstructions
Capture LiDAR and video data for reporting and remediation planning
Our Method:
Using the Elios 3, we conducted a comprehensive drone culvert survey entirely from above ground. The drone flew through the culvert with zero GPS signal, capturing both visual and LiDAR data.
Results:
Identified wall cracks and structural deterioration
Located debris accumulation and flow restrictions
Created a full 3D model of the culvert for post-survey analysis
This project demonstrates how drone technology can improve visibility and planning for even the most inaccessible underground assets.
Benefits of Drone Culvert Surveys
Here’s why asset managers, engineers, and drainage authorities are switching to drone-based methods:
Safety
No confined space entry or manned inspections required.
Access
Survey culverts that are flooded, partially collapsed, or too narrow for traditional entry.
Speed
Rapid deployment with minimal setup—most surveys completed in under a day.
Data Accuracy
Capture measurable outputs including LiDAR point clouds, 4K video, and digital twins.
Cost-Efficiency
Reduce labour, risk mitigation, and traffic management costs.
Who Benefits from Drone Culvert Surveys?
Water utility companies
Railway and highway contractors
Local authorities and councils
Civil engineering and infrastructure consultants
Environmental agencies
If your work involves surface water culverts, box culverts, drains, or stormwater systems, drone-based inspection is now the gold standard.
Why Choose DJM Aerial Solutions?
With over 10 years of confined space and infrastructure inspection experience, DJM Aerial Solutions delivers:
CAA-approved operations across the UK and Europe
Qualified pilots with military and engineering backgrounds
Full-service delivery including reports, point clouds, and 3D models
Proven results in culvert, tunnel, tank, and stack inspections
Whether you’re managing critical drainage infrastructure or planning asset refurbishment, our Elios 3 drone culvert surveys offer the safe, smart, and scalable solution you need.
Get in Touch for a Drone Culvert Survey
Want to know more? Our team is ready to assist with surface water culvert inspections, confined space assessments, and high-resolution mapping.
📞 Call us directly or
📧 Contact us today to arrange a consultation.
📍 Based in the North East, we serve clients across the UK.