Monday, July 15, 2024


KaarbonTech’s Managing Director, Mark Entwistle said: “Gully sensors are a critical tool in the management of flood risk and the efficient programming of cleansing schedules"

High performance gully sensors are a great way to monitor water levels in gully pots, especially in areas at high risk of flooding. April 2023 saw highway asset management expert KaarbonTech embark on a project with Derbyshire County Council (DCC) in the UK, installing gully sensors to provide real-time water level information, informing cleansing schedules and allowing advanced warning of flooding.

How do they work?

Attached to the underside of the gully grate, these high-performance sensors record an accurate measurement of the water level in the pot below. Readings deliver precise water level percentages, allowing for timely flood alert warnings. Monitored in real time, data is transmitted to dedicated software, integrating seamlessly with KaarbonTech’s Gully SMART solution, streamlining the observation process efficiently. This data can be viewed against current and historic readings, providing vital, accurate information to inform gully cleansing programmes, allowing a true risk-based approach to be taken.

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Dales in partnership, KaarbonTech and DCC selected an area in Masson, in the Derbyshire Dales, identified as an area of high vulnerability to flooding. Ideal installation conditions ensured the best quality sensor operation and results.

These included:

  • Ensuring there were no obstructions in the gully pot where sensors were
  • Ensuring strong signal strength for battery longevity and consistency of
  • Installing multiple sensors in proximity, to mitigate any potential sensor

Placing sensors on gullies in this location supported a proactive approach to address the critical need for enhanced flood monitoring and allowed the right mitigation measures to be put in place, using accurate and real-time data.

Results so far

In place for around four months, the sensors are providing regular transmissions and returning accurate data in line with the rainfall data seen in the area. This data provides valuable information to drive decision making around cleansing programmes and will be used alongside flood event forecasting and weather alerts. With a lifespan of up to six years, the sensors’ prolonged and reliable performance will help inform maintenance, management, and flood risk well into the future.

KaarbonTech’s Managing Director, Mark Entwistle said: “Gully sensors are a critical tool in the management of flood risk and the efficient programming of cleansing schedules. I am delighted that we are seeing such good results from the first few months of this project, and that Derbyshire can take a much more detailed approach to their maintenance programming. I believe that sensors are a valuable resource, streamlining management of
gullies and keeping the road network safer.”

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