Skip to Main Navigation

Knowledge Note 2 : Planning and Prioritizing Urban Flood Risk Management Investments (English)

Careful planning and prioritization are critical in the selection of an appropriate mix of integrated urban flood risk management (IUFRM) solutions. An integrated approach to urban flood risk management1 relies on a balance of structural (including nature-based2 ) and nonstructural measures. Building on the results of flood risk assessments, decision makers utilize various tools and methodologies to suit the local context and its specific flood hazards. Some of the criteria considered in the planning and prioritization process include: the probable frequency and strength of floods, potential damage to people and property, cost-benefit analyses (CBAs), social and environmental assessments, and the capacity of existing flood risk management measures. By analyzing the decision-making processes that take place at different governance levels in Japan, this Knowledge Note illustrates how the findings and conclusions of risk assessments are translated into urban flood risk management solutions through the process of planning and prioritizing related investment. Knowledge Note 3 will build on this information and focus on the various aspects to be considered during the design and implementation of IUFRM solutions. In Japan, IUFRM involves collaboration and role sharing among various sectoral departments, those related to rivers, sewerage and drainage, urban development, the environment, and disaster risk management (DRM), and stakeholders. Together with these actors, the public and private sectors, academia, community and civil society organizations, and citizens work together and share responsibilities to achieve the common goal of mitigating and managing urban flood risks in accordance with national laws, policies, plans, and guidelines. Central and local authorities carry out the following steps as part of their various planning and prioritization processes.


  • Author

    Kryspin-Watson,Jolanta, Takemoto,Shoko, Stanton-Geddes,Zuzana, Endo,Kenya, Takamatsu,Masatsugu

  • Document Date


  • Document Type


  • Report Number


  • Volume No


  • Total Volume(s)


  • Country


  • Region

    The World Region, Other,

  • Disclosure Date


  • Disclosure Status


  • Doc Name

    Knowledge Note 2 : Planning and Prioritizing Urban Flood Risk Management Investments

  • Keywords

    flood risk management; flood management; Disaster Risk Reduction and Management; Nature-Based Solutions; disaster and climate risk management; water supply and sewerage service; heavy rain; urban flood; consensus building; disaster risk management; nonstructural measures; effect of climate change; climate change adaptation strategy; community development promotion; Social and Environmental Assessment; green infrastructure; river improvement plan; urban development; flood management plan; land use plan; watershed management; surface water; amount of rainfall; land use planning; climate change risk; inundation from rainfall; water level measurement; extreme weather event; land use regulation; loss of life; flood risk assessment; sewerage system; Urban Planning; disaster prevention activity; standard and guideline; Solid Waste Management; flood damage; climate change scenario; climate change impact; impact of flood; wastewater treatment plant; construction of facilities; sea level rise; Water and Land; disaster risk assessment; agriculture and forestry; local government department; urban drainage system; system knowledge; surface water runoff; river basin plan; sewerage and drainage; climate change mitigation; flood management infrastructure; panel of expert; private sector actors; community development plans; underground storage facility; terms of policy; land use policy; human resource development; operations and maintenance; local government system; real estate transaction; building code regulation; public infrastructure investment; flood mitigation scenario; climate change forecasts; line of defense; lack of awareness; water retention ponds; costs of flood; limited capacity; urban heat island; land use restriction; management of flood; ground water level; economic development policy; flood management effort; flood damage mitigation; operation and management; civil society group; risk management capacity; flood control measure; Construction Building; access to information; flood preparedness activity; urban green space; urban flood management; land and water; technical assistance grant; damage to houses; national development planning; flood control activities; flood control facility; abundant water resource; construction of building; early warning system; stormwater management; municipal government; city government; storm surge; detention pond; housing development; stormwater drainage; management goals; flood-risk; underground space; rainwater harvesting; rainfall intensity; Public Facilities; hazard map; sewerage department; awareness raising



Official version of document (may contain signatures, etc)

  • Official PDF
  • TXT*
  • Total Downloads** :
  • Download Stats
  • *The text version is uncorrected OCR text and is included solely to benefit users with slow connectivity.


Kryspin-Watson,Jolanta Takemoto,Shoko Stanton-Geddes,Zuzana Endo,Kenya Takamatsu,Masatsugu

Knowledge Note 2 : Planning and Prioritizing Urban Flood Risk Management Investments (English). Learning from Japan’s Experience in Integrated Urban Flood Risk Management Knowledge Notes Washington, D.C. : World Bank Group.