Water Security for Development in an Uncertain Climate

This policy brief argues that integrating water security and climate resilience into development planning is essential for growth and poverty reduction, particularly in Africa. It advocates for prioritizing 'no/low regret' investments that provide returns regardless of the climate scenario, while calling for coordinated governance and diversified financing to mitigate the high economic costs of climate-driven disasters.

• Water security is a fundamental requirement for economic growth, development, and poverty reduction, serving as the critical link between energy, food, and economic expansion. Most African countries currently lack this security, which threatens their development prospects as climate risks increase.
• Climate variability and extreme events have caused significant GDP losses in several African nations. For example, Ethiopia has seen annual growth reduced by up to 38%, while Kenya experienced GDP drops of 11% due to 1997–98 floods and 16% due to the 1999–2000 drought. In Rwanda, 2007 floods cost between US$4 million and US$20 million across two regions.
• Climate projections for Africa indicate a likely increase in temperatures at a rate exceeding the global average. While rainfall projections are uncertain—with some models predicting increases and others decreases—all models agree that storm rainfall will become more intense.
• The document categorizes investments based on their climate risk: 'no/low regret' investments provide acceptable returns regardless of the climate scenario; 'climate change risky' investments provide returns only if climate change does not occur; and 'climate change justified' investments are essentially insurance that only yield acceptable returns if climate change materializes.
• To minimize climate risks, planners should consider altering designs, implementing investments in stages to allow climate trends to unfold, or using innovative technologies and insurance. Robustness can be enhanced through pilot projects, 'soft' options that avoid irrevocable large-scale financial commitments, and further research.
• Financing for water security requires a mix of public and private funding with user cost recovery. While most specialized climate funding is currently earmarked for mitigation, the potential Green Climate Fund could significantly transform the availability of finance for adaptation measures.
• Effective integration of climate resilience into development planning requires cross-sectoral policy and coordination across various governance levels. This necessitates new skills in areas such as hydrological monitoring, the downscaling of global climate models, and climate-sensitive project design.

APA

Climate and Development Knowledge Network (n.d.). Water Security for Development in an Uncertain Climate. https://cdkn.org/sites/default/files/files/WaterSecurity_Brief1_pr3.pdf

Chicago

Climate and Development Knowledge Network. Water Security for Development in an Uncertain Climate. n.d. https://cdkn.org/sites/default/files/files/WaterSecurity_Brief1_pr3.pdf.

Wikipedia

{{cite report |author=Climate and Development Knowledge Network |title=Water Security for Development in an Uncertain Climate |url=https://cdkn.org/sites/default/files/files/WaterSecurity_Brief1_pr3.pdf |access-date=17 August 2026 |via=Climate Insights Directory}}

BibTeX

@techreport{climateanddevelopmentknowledgenetworkndwater, author = {{Climate and Development Knowledge Network}}, title = {{Water Security for Development in an Uncertain Climate}}, institution = {Climate and Development Knowledge Network}, url = {https://cdkn.org/sites/default/files/files/WaterSecurity_Brief1_pr3.pdf}, urldate = {2026-08-17}, note = {Indexed by Climate Insights Directory} }