‘Are we there yet?’ On a long road trip, perhaps you’ve asked or heard this question.
Let’s direct this question to the state of urban flood risk management in Pacific Island countries. In this case, the ‘destination’ is flood-resilient communities.
For Pacific Island countries, no, we’re not there yet, but are we heading in the right direction?
Photo: Michiel van Nimwegen | Flickr Creative Commons
Just ahead of this year’s anniversary of the Indian Ocean tsunami of 2004, I visited the Tsunami Honganji Vihara site in Sri Lanka where upwards of 2,000 people died when their train was destroyed by the force of the waves. Shortly after my visit, Sri Lanka was faced with an unusually large tropical cyclone that pummeled the capital of Colombo, and caused extensive flooding, power failures and infrastructure damage. And, a few thousand miles away, Bali’s highest volcano, Mount Agung, was threatening to erupt, causing considerable anxiety in Colombo that it could trigger another tsunami event of the same magnitude of the 2004 disaster.
Upon my return to the United States I learned of the raging wildfires in California causing massive damages.
This year’s seemingly never-ending adverse weather events, exacerbated by climate change, along with adverse natural events such as earthquakes, are negatively impacting critical infrastructure globally. Some might describe 2017 as a global “annus horribilis” for adverse “force majeure” events.
William Young, Lead Water Resources Management Specialist, the World Bank
The Ganges Basin in South Asia is home to some of the world’s poorest and most vulnerable communities. Annual floods during monsoon season cause widespread human suffering and economic losses. This year, torrential rains and catastrophic floods affected more than 45 million people, including 16 million children. By 2030, with ongoing climate change and socioeconomic development, floods may cost the region as much as $215 billion annually.
A new report, Flood Risk Assessment and Forecasting for the Ganges-Brahmaputra-Meghna River Basins, summarizes two recent initiatives aiming to reduce these flood losses: a flood risk assessment for the Ganges Basin and an improved flood forecasting system for the Ganges-Brahmaputra-Meghna basins.
I just returned to Vietnam after attending the World Bank’s first-ever , a series of events that brought together city leaders from across Asia and beyond to explore innovative approaches to urban planning and management.
A topic that cut across all these areas is flood risk management, which was featured extensively during the launch event of the Global Platform for Sustainable Cities. I had the opportunity to learn more about the role of green mitigation infrastructure in integrated urban flood risk management, with lessons from Japan, Korea, Sri Lanka, Senegal, and the Netherlands. In these countries, green structures such as retarding basins, permeable pavement, and rainwater storage or infiltration trench have complemented conventional structural measures to reduce flood risk in a cost-effective manner.
How can water resource agencies make smart investments to ensure long-term water reliability when the future is fraught with deep climate and economic uncertainty? Water resource agencies around the world are grappling with this question at a time of unprecedented water stress, growing demands, uncertain climate change, and limited budgets. We helped SEDAPAL, the water utility serving Lima, Peru, answer this question by drawing on state of the art methods for decision making under deep uncertainty.
Lima is home to approximately 9.8 million people. It is the fifth largest metropolitan area in Latin America. A rapidly growing population with approximately one million underserved urban poor, current water shortages, competition for water between sectors, wide rainfall variation due to El Niño effects, and long-term climate change impacts may leave the region under perpetual water stress.
Recognizing the urgency of Lima’s water situation, SEDAPAL has developed an aggressive multi-billion dollar Master Plan to implement 14 large and diverse infrastructural investments projects between now and 2040 at a total cost of US$2.7 billion. Together, the investments are designed to meet the 30 percent increase in water demand that SEDAPAL projects for the coming decades.