Hydrographic Surveys
Expert Bathymetric Surveys Across the United Kingdom for Lakes, Rivers, Ponds, and Reservoirs
For fast, accurate water depth and bed level data, our hydrographic surveys are the ideal solution. Using remote-operated boats, we safely access shallow areas, providing a quicker and safer alternative to traditional methods. Get the precise data you need to keep your project on track and avoid costly delays.
- Accurate surveys utilising GPS and total stations.
- Safer, low draft, remote-operated boats.
- Quick turnaround to meet project deadlines
- CAD-ready drawings for seamless integration


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Are you aware of your specific needs and/or wish to include files? Please complete our detailed form here.
Recent Reviews
5.0 81 reviews
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Lauren Chapman ★★★★★
THS Concepts has shown an excellent attitude and eagerness towards our ongoing project. I am thoroughly impressed by the level of service I have received and look forward to utilising their skills in the future.
- Tim K Construction Ltd. … More -
Josh Saxby ★★★★★
Superb service, quick turnaround and extremely helpful! I wouldn't hesitate to use THS Concepts again if I need to in the future! -
Molly Davis ★★★★★
We've recently had our building measured by THS. Great service and very prompt to respond to any queries. Thank you. -
Theo Carter ★★★★★
Brilliant service - we were in a desperate position needing to documentation relating to a landlord certificate and they came out the next day squeezing us into their schedule -
Minniedale Projects ★★★★★
We recently approached THS Concepts to carry out a level survey of the screed to the ground floor of a large residential property we were Project Managing. The property was undergoing extensions and re-furbishment work. We had a tight time … More scale to receive the information and THS Concepts delivered quickly and efficiently to meet our deadline. This is the second time we have used them and would highly recommend. -
Billy Buckley ★★★★★
I contacted Tom to carry out a Topographic survey, and cannot recommend them enough. Nothing was to much, and I was kept up to date with everything as it happened! Great company to deal with and reasonably priced.
Comprehensive Hydrographic and Topographical Surveys for Inland Waterway Projects
Utilising remotely operated hydrographic survey boats with a shallow draft, we safely and efficiently survey a variety of inland waterway projects, including lakes, reservoirs, mines, and ponds. Our boats access shallow areas and tight spaces with ease, providing a safer alternative to conventional methods.
For comprehensive site coverage, we can combine our hydrographic surveys with topographical land surveys to capture surrounding land areas, offering a complete solution. Typically used in projects like dredging, construction, and demolition, our service provides precise data even without the need for GPS signals.
We deliver water depth data in clear, easy-to-use CAD files and DTM models, allowing you to make informed decisions quickly and keep your project on track.
Benefits of Our Hydrographic Service
Rapid Survey Information Acquisition
Our shallow draft survey vessel is quick and manoeuvrable allowing rapid survey acquisition. We can typically provide outline results within a few hours of the survey!
Safer Than Conventional Survey Methods
We don't require an operator in a boat or wading in the shallows to pickup the water depths. Our survey boat can be safely launched by 1 person and doesn't require a crane or cradle lowered into the water.
Useful For Smaller, Complicated Projects
Our manoeuvrable survey vessel can safely operate in enclosed, dangerous spaces where conventional methods would be no longer appropriate. These include weirs, locks, water treatment plants etc.snip
Our Hydrographic Survey Service
Site Survey Service
Our experienced surveyors visit your site, launch the boat and undertake a detailed hydrographic / bathymetric survey of your project.
Hydrographic CAD Drawings
Following your survey, you receive your DWG CAD / DTM (digital terrain model) file. We can illustrate your data in plan, section and 3D format depending on what you require.
PDF Drawings
We also provide your drawings in PDF format, allowing you to easily print, mark up and measure both in the office and while out on site.
Photographs
Our surveyor takes plenty of photos on site, which are often useful during your project. We can send these in an easy-to-download link.
After Care
We ensure you are 100% satisfied with the drawings and service we provide. Updates and amendments are no problem and are undertaken quickly to get your project moving.
CAD Advice & Tips
We love helping you with projects! If you have an issue with CAD or need some tips to work effectively then we are quite happy to help, free of charge.
Why Choose THS Concepts For Your Hydrographic Surveys?
THS Concepts are an accredited member of The Survey Association body.
We operate across the United Kingdom and internationally.
THS Concepts was formed over 10 years ago in 2013.
£1 million in liability cover, employers and public liability.
5 Star / excellent reviews on both Trustpilot & Google Reviews
Hydrographic Surveys FAQ
We have undertaken our bathymetric / hydrographic survey service on a number of different projects around the UK. These range from:
- Dredge surveys in marinas / rivers.
- Removal and installation of new lock gates.
- A new pier in central London.
- Post construction of a new lake / wetlands.
We use a Hydrone remotely controlled survey boat. This is a twin hulled catamaran platformed specifically designed for hydrographic surveying.
The Hydrone utilises either a GPS device or a 360 Leica Prism to obtain the boats position / height and a sonar device to survey the bed levels.
Important features include:
- Survey Speed – 3 knots / 1.5 m/s
- Hull Width – 736mm
- Hull Length – 1143 mm
- Weight – 9kg
We operate both nationally and internationally, we have been as far as Liberia in West Africa to undertake our surveying services
However, we typically operate in London & The South East. This includes Kent, Hertfordshire, Sussex, Surrey, Suffolk and Essex
We often compliment our bathymetric / hydrographic surveys with topographical surveys to obtain information on the surround land next to a water feature. This can all be neatly integrated into one drawing package for you to easily analyse and design from.
Please visit our topographical survey page for more information.

Do You Need Your Waterway Surveyed?
- Relied on by Engineers and Designers.
- Quick Turnarounds, Great Customer Service
- 5 Star Reviews on Google & Trustpilot.