7.4.3 Assessability
The limits of insurability have also been extended with the use of new computer driven flood models. For
example, in the UK investment in flood risk models has meant insurers have a better understanding of
the parameters of flooding. Nevertheless, Swiss Re report that despite better models, flood risk is still
often underestimated and can strike in unanticipated ways. It should be appreciated that flood risk is not
static and can change for many different reasons year on year. For example, even in land located away
from flood zones, extreme rainfall and reduced absorption capacity can create conditions for a flash
flood. Of relevance to the Dutch context, Swiss Re conclude that viable flood insurance systems with
affordable risk based premiums will be difficult to achieve in countries without either precise flood
assessment tools or models. These models and tools are both currently underdeveloped in the
Netherlands due to the lack of the insurance industry’s interest in offering mainstream flood insurance.
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