The objective of this EArly-concept Grant for Exploratory Research (EAGER) project is to support research focused on developing and testing fast-flood-modeling technologies. It looks to answer two key questions. First, what flood simulation technologies maximally speed up simulations of flood risks under multiple flood drivers and response options, while maintaining accuracy? And second, with these technological innovations, can the design of flood infrastructure systems become substantially more efficient, lowering costs and improving effectiveness? Extreme weather events pose increasing challenges for protecting property and critical infrastructure from harm, and flood disaster damages amount to billions of dollars per year. Although many response options are possible, identifying effective and efficient improvements to infrastructure systems involves enormous constraints and complexity. As a fundamental bottleneck for this decision making, flood simulation technologies have been too computationally demanding—and therefore too slow—to adequately support the evaluation and coordination of infrastructure improvements. This research project seeks to advance fast-flood-simulation technologies that could transform the design of flood-safe infrastructure systems. This research project combines expertise in civil engineering and adaptation science in a high-risk, interdisciplinary research approach that could significantly enhance the performance of flood infrastructure systems