Flood Risk Management

Tetra Tech supports clients across the UK and Ireland, and The Netherlands in understanding, mitigating, and managing fluvial, pluvial, coastal, reservoir, and groundwater flood risk. Our integrated approach combines environmental science, data modelling, and engineering design to address all aspects of flood risk management and climate adaptation, from initial assessments to long-term resilience planning.

Through our work with local authorities, utilities, and developers, we deliver climate-smart, resilient, and sustainable solutions that respond to evolving climate risk, protect water quality, and improve community resilience. Our collaborative ethos ensures stakeholder engagement and regulatory alignment at every stage.

Climate Adaption and Flood Resilience Planning

Tetra Tech helps clients assess and manage flood risk through evidence-based strategies that reduce vulnerabilities and enhance resilience. We are trusted partners to deliver innovative and practical solutions that protect people, property, and the environment from flood impacts.

• Strategic flood risk assessments for planning and infrastructure development
• Hydraulic and hydrological modelling of fluvial, pluvial, and coastal flooding
• Flood hazard mapping and climate change impact studies
• Regulatory and planning support including sequential and exception testing
• Assessment, design and engineering, and implementation of flood defence assets and solutions
• Development, planning, design and construction management of flood alleviation schemes
• Property-level protection and resilience retrofitting
• Emergency preparedness planning and resilience strategies
• Storm surge, wave overtopping and coastal process modelling

Flooding and Drainage

Tetra Tech’s engineers and scientists design climate adaptation solutions to restore critical habitat, reduce flood risk, and support long-term resiliency in all environments. Our flooding and drainage solutions combine engineering, hydrology, and nature-based design to enable a sustainable and robust water system and improve water quality.

• Sustainable drainage systems (SuDS) design and implementation
• Integrated urban drainage and catchment-based planning
• Surface water management plans and flood alleviation schemes
• Condition assessment and modelling of legacy drainage networks and water systems
• Natural flood management, and river and landscape restoration
• Preparation of dredging and maintanance of water systems