The role of mangroves in managing flood risk in Pakistan, Sindh Province

Client: Asian Development Bank     Partner: Landell Mills      Location: Pakistan

Challenge

The Asian Development Bank (ADB) is in the preliminary scoping stages of the development of a significant investment plan to build resilience in Sindh province, located in the lower Indus river basin and delta region of Pakistan. The premise for the project is that the inhabitants, their livelihoods and the infrastructure that they rely on are facing many threats due to climate change and environmental degradation. Reducing these threats or managing their potential impacts will then increase opportunities and reduce constraints.

Solution

The possible approach to reducing threats is through improved risk-informed planning, physical works for flood protection and waterway connectivity as well as enhancing coastal resilience through nature based solutions. The objective of the work in this project is to:

Use data and numerical modelling to evaluate the spatial distribution of coastal and inland flood risk in Sindh province. As part of this, a database of synthetic Tropical Cyclone tracks reflecting 10,000 years of TC activity will be produced. This is an important component in understanding the spatial risk beyond the observed historical extreme events, which occur relatively infrequently.

Use the modelling to evaluate the potential impact of different flood risk management practices, with a focus on the role of mangroves.

To illustrate the results in an online platform, National Integrated Risk Analytics (NIRA), to provide a means of risk communication and engagement of stakeholders in the planning process.

Benefit

As a result of the work, the spatial risk profile is to be known to a greater degree of certainty, and the overall strategic mix of green/grey flood mitigation interventions can start to be formulated, to steer future considerations with respect flood risk management investment decisions.

Want to know more?

Funding for this work is provided by the Urban Climate Change Resilience Trust Fund. This fund supports cities by improving urban planning, designing climate resilient infrastructure and investing in projects and people. The Rockefeller Foundation and the governments of Switzerland and the United Kingdom support the fund.

Email Blair Spendelow for more information about the role of mangroves in managing flood risk.

Discover more of our projects on our International Development webpage.



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