This document discusses using integrated water resources management (IWRM) as an approach to climate change adaptation. Water is the primary medium through which climate change will impact people, ecosystems and economies. IWRM should therefore be an early focus for adaptation efforts. IWRM alone does not provide all the answers but water management is important for both mitigating problems and providing solutions. The document outlines climate change challenges for water management and how better water management can support adaptation. It also discusses financing issues and concludes that investment in water resources management provides benefits now while building resilience for the future.