Post-Event Review Capability

The award winning Post-Event Review Capability (PERC) methodology was created by Zurich Insurance to provide research and independent reviews of large flood events. It seeks to answer questions related to aspects of flood resilience, flood risk management and catastrophe intervention. It looks at what went well, as well as opportunities for improvement, and results in a set of recommendations for the future.

Use this page to learn about the PERC methodology, read full PERC reports or find specific recommendations.

Zurich focused its initial PERCs on floods because floods affect more people globally than any other natural hazard. However, the methodology can be applied to review and learn from other hazard events. We have recently applied it to study the growing peril of wildfires by reviewing the 2017-18 California fires.  

Resilience Lessons from Cyclone Idai and Cyclone Kenneth

The tropical Cyclone Idai and Cyclone Kenneth weather systems, which made landfall in Southeast Africa in March and April 2019 respectively, brought catastrophic destruction and damage to communities across Malawi, Mozambique, and Zimbabwe. The widespread humanitarian disaster resulting from Idai and Kenneth emphasises the need to learn what happened during these events and what can be improved to reduce future risk.

All material from the PERC carried out in Southern Africa by Alliance partners ISET-International, the International Federation of Red Cross and Red Crescent Societies (IFRC), Practical Action, and Zurich Insurance Group - and in collaboration with the Mozambique Red Cross and the Swiss Agency for Development and Cooperation (SDC) is available below, and on ISET-International’s dedicated PERC Idai and Kenneth page.

PERC Reports

Using PERC methodology

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Houston and Hurricane Harvey: a call to action

Houston and Hurricane Harvey: a call to...

Hurricane Harvey made landfall near Rockport, Texas on August 25, 2017 as a Category 4 storm. Over...

Zurich Flood Resilience Alliance: Post-Event Review Capability (PERC) Webinar 1

Zurich Flood Resilience Alliance: Post-Event...

Webinar 1/3 on the ZFRA Post-Event Review Capability (PERC) from 14 January 2019: Introduction to...

Zurich Flood Resilience Alliance: Post-Event Review Capability (PERC) Webinar 2

Zurich Flood Resilience Alliance: Post-Event...

Webinar 2/3 on the ZFRA Post-Event Review Capability (PERC) from 18 January 2019: become a forensic...

 

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PERC Recommendations

Search all the PERC recommendations produced in all PERC reports. Refine your search using the criteria on the left.

Total: 127 results found

Following the floods of 2005 Switzerland significantly improved its flood protection and flood risk management structures.

Across cantons, the goal was to better harmonize the regulations governing the flow of the rivers and lake levels to achieve maximum protection where needed most, including in large towns along rivers....

Limits of our imagination

Planning for disaster often means implementing measures that would have helped in the last disaster. While learning from experience is critical, looking backward can often limit our imaginations as to what future disas...

Organizations and Safety Nets have Limits

This report documents the successes and failures of the disaster response system. It also points to the limits of these systems. In fact, any system, no matter how well designed, can never anticipate every scenario and...

Relationships & Connectivity

Running through the observations of nearly every person interviewed for this study was the fact that pre-established relationships greatly sped response and improved results. Social service agencies with prior experien...

Learning is Critical to Building Resilience

The Boulder County area experienced several important shocks and stresses in the years leading up to the flood; learning from those experiences helped when the flood came. The 1976 flood in the Big Thompson Canyon to t...