Community-Led Flood Resilience: Insights from the Cranfield Study

In 2018, we partnered with Cranfield University on a research project that started with a straightforward question.

Written by Simon Crowther BEng (Hons) FCIWEM C.WEM MIET

27th January 2026

Are community Flood Action Groups helping to reduce and manage flood risk in England?

At the time, Flood Groups were being encouraged across the country. Policy was shifting toward community-led flood resilience. But little work had been done to test whether this approach was delivering real risk reduction, or simply moving responsibility downstream without proper support.

Why The Research Mattered

One in six properties sits at risk. Annual flood damages regularly reach hundreds of millions of pounds.

At the same time, flood risk management responsibilities have become fragmented. National policy sits with Defra. Delivery sits with the Environment Agency. Local implementation sits with Lead Local Flood Authorities. And increasingly, operational preparedness sits with volunteer Flood Action Groups.

On paper, that sounds collaborative. In practice, it creates gaps.

If communities are expected to take on more responsibility, they need structure, technical understanding, and consistent support. Without those, resilience becomes fragile.

The study set out to understand where that balance was working and where it was not.

How The Study Was Carried Out

We identified over 120 Flood Action Groups across England. Ten geographically dispersed groups took part in detailed interviews. Some were single-parish groups. Others were larger forum-style organisations covering multiple catchments.

We created structured survey questions, and combined them with open discussion. That gave us both quantitative results and the context that sits behind them.

We did not just ask whether groups thought they were effective. We asked why.

Do Flood Groups Reduce Flood Risk?

Ninety-five percent of participants believed their Flood Group’s actions had helped reduce or mitigate flood risk in their area. It tells us community-led flood action is not just well-meaning activity.

Groups reported delivering tangible measures including:

• Campaigning for flood defences
• Promoting property-level resilience
• Surface water management
• Drain and channel clearance
• Flood preparedness planning
• Deployment of temporary barriers
• Building local stocks of pumps and equipment

What Effective Groups Did Differently

Several consistent characteristics stood out.

Leadership

Every high-performing group had a committed individual or small team driving progress, coordinating volunteers, and maintaining pressure on agencies.

Structure

Small single-parish groups worked best when they had street-level coordinators. Larger forum-style groups achieved greater influence by linking multiple parishes and presenting a unified technical voice to authorities.

Technical Competence

Some groups included engineers, hydrogeologists, or environmental scientists. Those groups were able to interrogate modelling, challenge reports, and propose technically credible solutions. They were taken seriously by agencies as a result.

Preparedness

Groups that ran practice flood events, operated buddy systems for vulnerable residents, and pre-planned barrier deployment were far more effective during real incidents.

From an engineering perspective, this is not surprising. Operational performance during a flood event is driven by preparation, not intention.

Where Things Broke Down

The research also exposed systemic weaknesses.

Funding Delays

Several groups reported waiting close to a year between grant approval and funds being released. During that period, known risks remained unmitigated.

Complex Processes

Multiple funding streams existed, but application routes were opaque. Smaller groups without professional support struggled to access available funds.

Disrupted Agency Relationships

Frequent staff turnover within agencies interrupted progress and weakened long-term project continuity.

Local Knowledge Being Overlooked

Participants repeatedly described externally appointed officers lacking understanding of local flood behaviour, drainage layouts, or historic flow paths. That led to poorly targeted interventions.

An Ageing Volunteer Base

Over eighty percent of active Flood Group members were aged over sixty. This raises a genuine sustainability question for long-term response capacity.

Engineering And Community Action Must Align

The most important conclusion from the study is straightforward. Flood resilience is not delivered by infrastructure alone. And it is not delivered by community effort alone. Resilience emerges where good engineering, informed local knowledge, and organised community response intersect. Where that alignment existed, risk was mitigated. Where it did not, investment was made but vulnerabilities remained.

Why this Still Matters

Since 2018, flood risk has continued to increase. Surface water flooding has become more prevalent. Development pressure continues to add impermeable cover. Climate change continues.

Yet the same underlying challenges remain:

• Fragmented responsibilities
• Complex funding routes
• Under-utilised local knowledge
• Over-reliance on ageing volunteers

Addressing these issues is now as much about governance and process as it is about concrete and steel.

Community Flood Action Groups work. But only when they are structured, supported, and technically informed.

Engineering interventions work. But only when they are embedded in local operational reality.

True flood resilience sits at the overlap of both.