Bathymetric & Hydraulic

Supporting engineers, consultants and authorities with precise underwater and hydraulic mapping.

Our hydrographic and river surveys provide the reliable data needed to manage waterways, protect infrastructure and support sustainable flood resilience safely and accurately.

The Challenge

Managing unstable banks, changing currents and limited access while maintaining absolute precision.

Riverbanks can be unstable, currents unpredictable, and access limited yet the accuracy of hydraulic data is critical to flood modelling, watercourse management and civil engineering design.

Traditional methods can be slow, unsafe and inconsistent. Today’s environmental, infrastructure and energy projects demand fast, high-resolution datasets captured with minimal disruption and maximum reliability.

Bathy 10
Why Accuracy Matters...

Every measurement, level and coordinate influences the success of the final build. Accurate, coordinated survey data ensures that construction moves forward with confidence, allowing teams to:

Build safely

ensuring structures, excavations, and utilities align to design tolerances.

Reduce delays

avoiding rework and costly downtime caused by inaccurate or incomplete data.

Improve collaboration

providing unified datasets that integrate seamlessly with design, engineering, and BIM platforms.

Meet compliance standards

delivering verifiable records for QA, as-builts, and handover documentation.

Optimise efficiency

reducing repeat visits, downtime, and reliance on multiple contractors.

The Solution

Combining automated USVs, GNSS and LiDAR scanning to produce accurate, efficient hydrographic data.

River Surveys 2

Hydrographic & River Surveys

Full channel profiling, water depth measurement and cross-section data for modelling and design.

River Surveys 01

USV (Unmanned Surface Vessel) Surveys

Using the CHC Apache 4 for high-precision data capture in difficult-to-access or hazardous waterways.

Topographical.svg

Topographical & Floodplain Mapping

Combined surveys above and below the waterline to create continuous terrain models.

Thermal.svg

Utility Mapping (PAS 128)

Identifying subsurface features near rivers, reservoirs or flood defences to support planning and maintenance.

UAV-Mapping.svg

Drone & Aerial Surveys

Assessing wider catchment areas and flood zones with minimal disturbance.

Setting-Out.svg

Laser Scanning & BIM Models

Recording existing structures such as energy facilities for retrofit, expansion, or compliance upgrades.

What Sets Us Apart

We combine bathymetric, topographical and laser scanning data to create continuous 3D terrain models above and below the water.

Our use of USVs and UAVs keeps teams out of hazardous environments while improving coverage.

Specialists in confined-space, live-water, and flood-sensitive surveying.

Millimetre-accurate datasets ready for CAD, GIS and BIM environments.

Low-impact methods that support biodiversity and reduce carbon footprint through efficient workflows.


Apache 6

Technology That Delivers Precision

We use cutting-edge hardware and software to deliver robust hydrographic data, including:

  • CHC Apache 4 USV – automated hydrographic survey vessel for safe, efficient channel mapping.
  • CHC i93 GNSS + Controller – establishing control networks with centimetre accuracy.
  • Trimble X7 Laser Scanner – for structural geometry and bridge asset capture.
  • Integrated CAD & GIS processing – providing clients with models compatible with hydraulic and environmental simulation software.
Commitment to Safety & Environment

Providing clients with accurate 3D models ready for hydraulic, environmental and civil engineering analysis.

From remote-controlled USVs to drone reconnaissance, our methods reduce site risk while maintaining full environmental compliance.

Our work contributes directly to sustainable water management, helping clients make informed decisions that protect habitats and mitigate flood impact.

Bathy 10
Download our bathymetric & hydraulic mini Brochure
and find out more...