Urbanization has created a new hydrologic framework, impacting water quantity, quality, and ecosystem health, driven by changes in infrastructure safety and efficiency and risks due to climate change. Urban hydrologic systems link society, economy, and public health. Continued inquiry and synthesis are unraveling the drivers of urban hydrology, revealing unexpected interactions in the complex social-ecological and water-energy nexus. In view of these complexities, we need to better predict the impacts of these issues on urban water infrastructure and provide policymakers with robust and reliable information. This session invites research on water resources processes and impacts in urban systems with a focus on linking urban hydrologic change to ecology, climate conditions, energy resources and use, and social systems, including behavior and policy. Interdisciplinary studies involving integrated watershed management, green infrastructure, implications for flood/drought management, water and energy security, pollution/carbon mitigation, environmental justice, and climate resiliency are also invited.