世界银行-评估城市防洪项目的次要效益：以波兰弗罗茨瓦夫为例（英）

Policy Research Working Paper11178Assessing Secondary Benefits of Urban Flood Protection ProjectsThe Case of Wroclaw, PolandWinston YuRan GoldblattTess DoeffingerRoss EisenbergSteven RubinyiWater Global Department &Urban, Disaster Risk Management, Resilience and Land Global DepartmentJuly 2025 Public Disclosure AuthorizedPublic Disclosure AuthorizedPublic Disclosure AuthorizedPublic Disclosure AuthorizedProduced by the Research Support TeamAbstractThe Policy Research Working Paper Series disseminates the findings of work in progress to encourage the exchange of ideas about development issues. An objective of the series is to get the findings out quickly, even if the presentations are less than fully polished. The papers carry the names of the authors and should be cited accordingly. The findings, interpretations, and conclusions expressed in this paper are entirely those of the authors. They do not necessarily represent the views of the International Bank for Reconstruction and Development/World Bank and its affiliated organizations, or those of the Executive Directors of the World Bank or the governments they represent.Policy Research Working Paper 11178With global climate change impacting cities around the world, local and national governments need to plan for and invest in solutions that mitigate the climate and disaster risks their populations and economies face. Urban flooding poses an acute threat to sustainable and equitable urban growth and wellbeing. While the primary benefit of invest-ments in urban flood protection is the avoidance of future damages and losses, such investments can also provide sec-ondary benefits that can help unlock localized economic potential and contribute toward green growth. Although secondary benefits of investments in urban flood protection can be difficult to assess and quantify, the growing availabil-ity of locally sourced and remotely sensed data opens new possibilities. This study presents a spatially focused meth-odology that employs proxies to provide further evidence of secondary benefits linked to large-scale investments in urban flood protection in Wroclaw, Poland. Within newly protected areas, the study finds increases in land and res-idential real estate values, and an increase in economic development in parallel to on an increase in nighttime light intensity and built-up area. The study also finds that the relative rate of change for land and residential real estate values, nighttime light intensity, and built-up area within areas newly protected from flooding outstripped that of other areas of the city.This paper is a product of the Water Global Department and the Urban, Disaster Risk Management, Resilience and Land Global Department. It is part of a larger effort by the World Bank to provide open access to its research and make a contribution to development policy discussions around the world. Policy Research Working Papers are also posted on the Web at http://www.worldbank.org/prwp. The authors