Water plays a critical role in sustaining human health, food security, energy production and ecosystem services. Population growth, climate and land use change increasingly threaten water quality and quantity. Successful management of water resources requires an integrative understanding of coupled human and natural system components that can be used to generate practical, scientifically sound, economically-efficient and socially acceptable solutions that are sustainable. This session, which serves as the sister to our annual Water and Society session at the AGU meeting, provides a forum for discussing the advances in water resources systems analysis, planning and management to inform public policy, water resource allocation, conflict resolution, water governance, and sustainable development in a changing world.