Exhibiting at the the Flood Expo

Hydro International

Our flood warning and flood prevention systems can help you protect and prevent flooding of businesses, homes and infrastructure. Visit us on stand 4C40 to find out more.

Flood Management Services

Understand, mitigate and plan for flood events with expert flood monitoring, modelling, forecasting and warning services.

Our flood services help people, companies and public organisations to understand their current and potential future flood risk, enabling them to mitigate and plan for flood events and minimise or prevent damage and disruption to homes, businesses and infrastructure.

Our Capabilities
Flood Warning and Forecasting

We are the leading independent provider of flood warning systems to local authorities in the UK, having installed over 830 flood warning sites for over 75 councils and land drainage authorities. Our systems provide early warning to both drainage authority staff, to deploy maintenance teams, and to local residents, to deploy property level protection or trigger local flood plans.

Flood Risk Assessments
We have extensive experience in undertaking both FRAs and Flood Consequence Assessments (FCAs) for housing, commercial, agricultural, power, leisure and quarrying applications.

Flood Risk Assessments (FRAs) are a formal requirement to support many planning applications. Specific requirements apply in England, Wales and Scotland, but in general, FRAs need to demonstrate whether a proposed development is likely to be affected by any type of flooding and whether it will increase flooding elsewhere.

Flood hydrology and modelling
Flood hydrology entails the calculation of flood peaks or flood hydrographs for observed floods or for design floods for specified return periods. Our expert consultants use UK Flood Estimation Handbook (FEH) methods in undertaking FRAs and in support of hydraulic modelling, enabling us to appreciate situations in which the methods work well and critically, and the conditions in which they require some refinement.

Hydraulic modelling
Our hydraulic modelling services provide accurate estimation of water levels and flood extents for rivers and watercourses. Although UK flood extents are shown on the Environment Agency website, these are often based on the use of generalised models; detailed, site-specific modelling can be used to refine and challenge the flood maps. The models can also be used to estimate flow velocities and the associated flood hazard ratings.

Flood mitigation
Flood mitigation is an essential component of the work that we undertake for FRAs. Mitigation ranges from the design of drainage measures such as soakaways through to the design of flood balancing reservoirs.

Our Hydro-Logic® Smart Monitoring Data Loggers

Hydro-Logic® Flow Logger

Get reliable water flow data to enable effective water resources management, hydraulic analysis and flow control monitoring.

The Hydro-Logic® Flow Logger is a precision flow meter that delivers spot or continuous flow monitoring of rivers, streams, sewers and other bodies of moving water, helping engineers to understand water flow in natural and built environments and make better design, upgrade, asset management and planning decisions.

Hydro-Logic® Level Logger

Gather accurate water level data to enable flood warning, hydrometric data analysis and climate change monitoring.

The Hydro-Logic® Level Logger is an accurate, reliable data logger ideally suited to ongoing remote capture of water level data, enabling engineers, municipal organisations and consultants to carry out critical flood mitigation, water resource planning and long-term environmental research activities.

Hydro-Logic® Weather Logger

Get critical early warning of flood events and monitor climate change.

The Hydro-Logic® Weather Logger is a robust, remote weather monitoring system that provides real-time information about rainfall and other climatic conditions.

Hydro-Logic® Timeview

Automatically process and manage hydrometric data to provide alarms and early warning of flood events and other environmental risk factors.

Hydro-Logic® Timeview provides automatic wireless receipt of data from remote sensors, triggering automated flood event alarms, providing short-term data storage and enabling data visualisation and initial analysis.

Our Flood Prevention Flow Controls

The Hydro-Brake® Flow Control Series

Hydro`s Hydro-Brake® Flow Control Series is a comprehensive and versatile toolbox of precision-engineered devices for managing surface water, watercourse and foul/combined sewer flows.

These controls can help:
• Deliver compliant schemes with scalable, precision flow control performance.
• Precisely balance flow rates and upstream storage requirements on every project.
• Save land-take and costs with optimised flow control performance.

Hydro-Brake® Flood

Protect homes, businesses and infrastructure from flooding.

Hydro-Brake® Flood provides large-scale protection at the watercourse level, preventing costly damage and disruption to residents, businesses and essential services.

Hydro-Brake® Flood is a highly sustainable, precision-engineered vortex flow control that provides large-scale protection at the watercourse level. It prevents flooding by holding back excess waters in temporary flood storage areas.

Suitability: For watercourses; flood storage reservoirs
Flow Range (l/s): 550 - 12,000 *
* Higher flows and heads possible.

Find out how Hydro-Brake Flood protects over 600 properties in Wigan, cutting flood risk to 1% and watch a video of the system in action...

Hydro-Brake® Optimum

Manage low, moderate and high flows to deliver sustainable drainage from single sites to large networks.

The Hydro-Brake® Optimum vortex flow control provides customised water quantity management for surface, foul or combined water across a wide range of flows and for a variety of applications.

Precision-engineered to meet site-specific flow, head and storage requirements, only the Hydro-Brake® Optimum leverages more than 30 years of vortex flow control expertise to deliver exceptional flood protection and sustainable drainage.

Suitability: Most sites, from very low to very high flow rates.
Flow Range (l/s): 0.7 - 550 *
* Lower flows possible.

Find out how Hydro-Brake® Optimum helped Cornwall Council solve a car park flooding problem

Hydro-Brake® Agile

Reduce upstream storage and manage flood risk at sites with stringent discharge consents where space for on-site attenuation is at a premium.

Hydro-Brake® Agile is a float-operated flow control, the only design that achieves a constant rate of discharge and therefore the minimum possible upstream storage.

Suitability: Constrained sites with stringent discharge consents.
Flow Range (l/s) : 4.5 - 100

Hydro-Brake® Orifice

Manage moderate flows and deliver sustainable drainage at site and development level.

The Hydro-Brake® Orifice is a precision-cut, sharp-edged orifice plate flow control, that delivers cost-effective, precise flow control.

Suitability: Unconstrained sites with generous discharge consents.
Flow Range (l/s): 2.5 - 100

Our Geocellular Storage & Infiltration Systems

Stormbloc® Optimum

Attenuate surface water and stormwater effectively even in challenging high-traffic urban environments.

Stormbloc® Optimum is a resilient geocellular storage system that provides underground storage and infiltration of urban runoff. Lightweight materials combined with robust design make it easy to transport, quick to install and extremely durable, even beneath high-traffic areas such as roads, car parks and warehouse yards.

Stormbloc® Optimum is a modular and easily customisable water management solution, giving engineers the freedom to configure storage for even the most challenging SuDS project.


Store and infiltrate surface water and stormwater even on difficult or irregular sites.

Stormcell® is a high-capacity, low-maintenance modular stormwater and surface water storage system that can be customised to suit shallow, deep or irregular sites. Its flexible modular structure is light but strong, making it ideal for use beneath areas such as roads, car parks and industrial areas.

With a design that ensures that solids are washed through the pipework rather than into the storage area, the system requires very little maintenance.


Store surface water and stormwater with easy-access inspection.

Stormbloc® is a modular geocellular structure that provides below-ground storage of stormwater and surface water. It is lightweight but resilient, making it an appropriate solution for use on many SuDS projects.

Find out how Stormbloc® and Stormcell® helped retain Grade II listed park landscaping whilst preventing flooding in Southwark, South London.

About Hydro International

Hydro International Ltd is a global company that provides advanced products, services and expertise to help municipal, industrial and construction customers to improve their water management processes, increase operational performance and reduce environmental impact.

With over 30 years of experience and a reputation for engineering excellence, businesses and public organisations all over the world rely on Hydro International products and services to reduce flood risk, improve water treatment and protect the environment from water pollution.

Headquartered in Clevedon, UK, Hydro International has a network of over 80 distribution partners and serves customers in more than 40 countries.

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01275 878371

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