In the Koshi River basin, extreme weather events upstream lead to disasters downstream, affecting millions of people, destroying infrastructure, and disrupting development. These upstream-downstream linkages and shared disaster risk can form the basis for cooperation and provide opportunities for disaster risk reduction (DRR) and resilient livelihoods in the basin. Effective cooperation can be achieved by sharing knowledge and fostering practices that address the transboundary nature and scale of disaster. <p> <p> The Koshi DRR Knowledge Hub is a platform that aims to foster regional cooperation by encouraging the sharing of knowledge and information on transboundary issues related to water. These issues range from water-induced disasters to research and policy on water and the potential shared benefits of such work. Through the hub, stakeholders can collaborate at the interface of research, policy, and practice. Such informed decision making will help improve the overall management of the Koshi basin.