The construction industry is failing to adequately address the risks and consequences of flood events, often lacking the urgency and proactive response needed. This oversight puts insurers, project owners, contractors, and financiers at substantial risk of significant exposure.

Introduction

Managing Flood Risk in Construction Projects

As climate change intensifies and urbanisation accelerates, the frequency and severity of flood events have increased, posing significant threats to construction projects. The changing climate has also reduced the reliability of hydrological data and models based on historical records. This risk is particularly pronounced and growing in the Middle East due to several factors:

  • Contruction boom: The region is experiencing a significant construction boom, with the industry valued at USD298 billion in 2023 and projected to reach USD401 billion by 20231
  • Modelling challenges: There are inherent challenges in modelling pluvial floodwaters through wadis and desert areas, complicating risk assessments
  • Limited historical data: Many regions being newly developed, or where infrastructure crosses large expanses with limited surrounding development, lack sufficient historical data, making it difficult to predict and manage flood risks effectively

To further highlight the growing severity of flooding in the Middle East region, the Arabian Flash Floods in April 2024 ranked among the top 10 global Nat Cat economic losses for the year, with a total economic impact estimated at USD 8.6 billion . Of this, USD 2.8 billion were insured, leaving a significant USD 5.8 billion of uninsured economic loss!

In the construction industry, the responsibility to manage and mitigate flood risk is shared among various stakeholders/project participants, including contractors, developers, consultants, project owners, project financiers, and insurers. Each of these parties can face exposure during a flood event, making it essential for them to actively participate in strategies to mitigate the impact of flood risk and ensure the resilience of construction projects.

The multifaceted nature of flood risks in construction makes them inherently challenging to manage. As a project progresses, flood risks evolve, with exposures changing throughout the project lifecycle. This article delves into the potential consequences of flood events and offers insights from Gallagher's specialist Risk Advisory team in the Middle East on effectively navigating these challenges.

Understanding the risk

Flooding can originate from various sources, such as pluvial floodwater, coastal flooding, and riverine floods. However, the foundational principles of an effective risk management program for addressing flood risks remain consistent at a holistic level. The focus of this article is therefore on how projects under construction, often inherently more vulnerable to damage than completed assets, can be managed to reduce this risk.

Four areas of a project that can be a source of exposure from flooding are as follows:

Consequences of flooding in construction

The consequence of a flood incident on a construction project may depend on several factors.

Since each of these factors influences the overall impact of a flooding incident, a robust flood mitigation strategy must take all of them into account to effectively manage such events. It is crucial to recognise that the risk and potential consequences can change significantly as a project progresses. Being able to articulate the consequences of an event occurring at each stage of the project is essential for (re)insurers to understand the risk and for project owners to manage and suitably mitigate it.

Case study: A project in the Middle East relied on local authority flood models to assess the flood risk. Insurer Nat Cat models identified a risk of a 1 in 20-year flood event, which was not addressed by the site's flood mitigation plan. When questioned by Risk Engineer, the project could not identify the basis for the models or demonstrate satisfactorily that the project was suitably protected, leading to significant challenges with Insurers when extensions to the construction policy were sought.

Flood mitigation strategy

An effective flood mitigation strategy should encompass the following elements:

  • Developed pre-construction: It should be developed before the construction project begins, but remain a dynamic, live document
  • Continuously adapted: The strategy should be a continuous process that evolves as the exposed value and rebuild time change throughout the project lifecycle
  • Comprehensive coverage: It must consider all aspects, including on-site and off-site fabrication, storage, laydown areas, and the main construction site
  • Tailored and specific: The strategy should be tailored to the specific exposure and project type, taking into account susceptibility and severity at each stage of the project

Recent publications such as the Construction Insurance Risk Engineers Group (CIREG) Guide to Managing Flood Risk During Construction - 20232, highlight the growing need for robust mitigation measures to be taken to prevent the mounting losses in the industry from this hazard.

As a project owner, developer or contractor, there are several stages to a robust flood risk mitigation strategy, which should inherently drive continuous improvement in the flood mitigation strategy.

Drawing from extensive experience with projects across the Middle East, the following insights can be used to guide project owners on effectively addressing each stage of their risk mitigation strategy and ensuring that contractors have robust plans in place to manage this risk. Additionally, a strategy for demonstrating to insurers the adequacy and suitability of the controls implemented to manage these risks is provided.

Gallagher risk advisory insight

We've explored why flood risk is increasing for construction projects in the Middle East, the parts of a project that may be most exposed, and the core principles of effective flood mitigation. Now, drawing on insights from our Risk Advisory team, the following section offers practical guidance to help project owners shape a robust flood mitigation strategy.

While not intended to be fully exhaustive, the guidance highlights key areas that project teams and contractors should address to help minimise the impact of flooding throughout the project lifecycle.

Lessons learned

Often, project teams lack a corporate memory as they start anew with each project. However, individual stakeholders/project participants possess valuable insights and lessons learned from past experiences. By collectively gathering this information, identifying incidents that could potentially recur, and transforming these insights into an actionable plan, project teams can significantly enhance their flood mitigation strategies and drive continuous improvement.

  • Run a workshop to identify lessons learned from previous events prior to development of flood mitigation strategy
  • Improvement items to be documented and the person responsible identified

Assessment and planning

At the initial stage of the project, the focus should be on identifying the type of flood risk, where the vulnerability and exposure will be throughout the project lifecycle, the range of severity of an event, including assessment on project timelines, cost and safety.

  • Identifying responsible people to implement controls and strategies will be fundamental to the success of the implementation.
  • A comprehensive flood study should be completed. The project team should be aware of where the data sets are from and have checked the applicability for the project
  • The project should verify that the designed protection level for the construction phase is aligned with the insurance coverage subjectivities that are being sought
  • The flood risk assessment should identify specific vulnerabilities to the project site. Example, exposed trenches, diversion of existing drainage, open basement levels, tunnelling, laydown & storage (on & off site)
  • Identified risks should be transferred to the project risk register and key stakeholders should be informed of residual mitigated risks

Proactive mitigation

Following the identification of the risk, the possible severity of an event and the risk appetite of the project stakeholders, consideration of suitable mitigation measures is needed.

  • The construction methodology should consider the flood risk to specific aspects of the project and the timeframe for installation of permanent flood protection measures should be challenged
  • If temporary flood mitigation includes mechanical evacuation (e.g. pumps), these should be on a maintenance and testing schedule. Non-mechanical flood mitigation measures should also have a maintenance and inspection schedule
  • Critical long lead items should have a specific flood protection plan once they arrive on site
  • The construction plan should identify a methodology to manage open ends until systems are fully completed
  • Temporary flood mitigation measures should be communicated and agreed upon with project stakeholders to verify that these are in line with risk appetite and insurance coverages

Preparation and response plans

One of the most common failings seen by Gallagher specialists on construction projects is Flood Emergency Response Plans (FERP) being seen more as a tick box exercise rather than being treated as a live document that is specific and regularly updated as site conditions and exposure change.

The focus of Emergency Response plans is often focused purely on personnel safety, but does not adequately consider the protection of property and assets.

  • The emergency response plan should be on a scheduled review basis based on project type (e.g. monthly, 3-monthly). The response plan should be relevant and consider specific exposures to the project
  • Conduct regular training sessions and drills for workers and staff to ensure readiness. These should identify and incorporate improvement points into the FERP with responsible persons assigned
  • Necessary resources such as sandbags, pumps and emergency supplies are identified in the plan and positioned for quick deployment

Monitoring and intelligence

To improve the protection plans in place for construction projects, having good forecasts and monitoring can improve the effectiveness of a site’s response to flooding.

  • Weather patterns for the construction site should be monitored and communicated to the project teams
  • Consideration of automated alert systems for the site. Consider levels of alert and the action plan associated with each alert level
  • Conduct post-event evaluation to identify areas for improvement and incorporate lessons learned

Conclusion

By following these stages, construction projects can develop a comprehensive and adaptive risk management strategy that effectively addresses flood risks, enhances resilience, and ensures the safety and continuity of the project. Even the best-prepared business, with the most thorough FERP, isn’t immune to extreme weather events; this is where a robust flood mitigation strategy combined with suitable Insurance coverage comes into its own.

As (re)insurers are key risk partners on construction projects, it’s important that project teams not only take steps to understand and mitigate flood risk but also communicate those efforts clearly.

Gallagher’s Risk Advisory team is well placed to support project teams in reviewing their flood mitigation approach and helping them demonstrate to insurance partners how those risks are being actively managed.

Get in touch with our specialist team for further insights and a detailed review of key actions required to develop a robust flood mitigation strategy.

Author Information

Stephen Scott

Stephen Scott

Divisional Director - Head of Risk Advisory

Barry Jones

Barry Jones

Executive Director — Power & Construction


Sources

1 US Tariff Impact on Middle East Construction Market, Next Move Strategy Consulting, 12 June 2025.
2 The CIREG Guide to Managing Flood Risk During Construction, Construction Insurance Risk Engineers Group, 15 December 2023. PDF file.