Topographic, Bathymetric and Drone Surveys in Tunisia
Topographic surveys in Tunisia are the base for every impact assessment, model and engineering design. AHEC combines drones (RTK photogrammetry, LiDAR, multispectral), ground methods and bathymetric surveys across the country’s varied terrain: coastline, ports, oueds (wadis), sebkhas (salt flats) and hills.
Our services in Tunisia
01
Drone topographic surveys
6
Large areas covered fast, to centimetre accuracy.
- Drone photogrammetry with RTK positioning and ground control points
- Orthophotos down to 1 cm resolution
- Digital terrain and surface models (DTM, DSM) and point clouds
- Rapid coverage of large areas (100+ ha per day)
- Volume calculations: stockpiles, cut and fill, quarries
- Construction progress monitoring and as-built records
02
Drone LiDAR
5
The true ground surface, even under vegetation.
- High-density point clouds (200–300 points/m²)
- DTM under vegetation cover
- Difficult terrain (oueds, sebkhas, hills, dense vegetation)
- Power line, pipeline and road corridors
- Coastal erosion monitoring
03
Bathymetric and marine surveys
5
Ports, channels and the Mediterranean coast.
- Bathymetric surveys (single-beam and multibeam echo sounder)
- Current and wave measurements (Nortek Aquadopp, AWAC)
- Seabed sediment sampling (Van Veen grab)
- Seawater sampling and water column profiling
- Tide and water level monitoring
04
Hydrometric monitoring
5
The flow data that feeds hydrology studies.
- Flow gauging of oueds and watercourses
- Velocity measurements (current meters, ADCP) and rating curves
- Water level and groundwater level monitoring
- Sediment load monitoring
- Oued channel characterisation for flood risk
05
Ground surveys and specialised applications
4
Classic methods where ground accuracy is required.
- Total station and RTK GPS/GNSS
- Terrestrial laser scanning (3D scans of industrial facilities)
- Thermal imaging and multispectral imaging (NDVI)
- Rapid post-flood mapping
06
Deliverables
4
Files ready for your engineers and GIS.
- CAD topographic plans (AutoCAD, Civil 3D) and contours
- DTMs, orthophotos, point clouds and 3D models
- GIS-ready data in Lambert Nord / Sud Tunisie or WGS 84
- Survey report and accuracy statement
References in Tunisia
- Bathymetric survey and sediment sampling – Bekalta fishing port, APIP, Monastir, 2025
Group experience: more than 500 projects delivered by AHEC in Saudi Arabia, where the group holds NCEC Class A classification. See group projects →
Frequently asked questions
How accurate is a drone survey?
With RTK positioning and ground control points, a drone survey reaches centimetre accuracy, suitable for studies and design work.
Do you carry out surveys at sea?
Yes: bathymetric surveys, current and wave measurements (Nortek Aquadopp, AWAC), sediment sampling and water level monitoring for ports and the coast.
Which deliverables do you receive?
DWG topographic plans, digital terrain models, orthophotos, point clouds and GIS-ready data.
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Let’s talk about your project
A site, port or oued to survey? Send us the boundary (KMZ or plan): we propose the right method and a quote.
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Tunisia