Under the water: flood impacts and economic dynamics in northern Peru

Abstract

This paper assesses the effects of devastating flooding on household welfare in northern Peru. Remote sensing data are used to construct a novel damage index as a proxy for the local economic impact caused by the 2017 coastal El Niño floods. Using 5-year panel data from the Peruvian National Household Survey (ENAHO), we observe that affected households experience a decrease in income and expenditure compared to those in unaffected areas during the period 2015–2019. Additionally, poverty increases as a result of this natural hazard, especially among households in urban areas. Although there is a recovery in income and expenditure in the aftermath of the floods, households mitigate their consumption through donations of food and clothing. We suggest that, in a context where the occurrence of flooding affects the most vulnerable groups, the development of formal riskcoping strategies such as insurance is crucial for boosting their ability to reduce, mitigate, or adapt to future disaster risk.