Human-centered flood mapping and intelligent routing through augmenting flood gauge data with crowdsourced street photos |
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Affiliation: | 1. Department of Construction Science, Texas A&M University, College Station, TX 77843, USA;2. Department of Geography, Texas A&M University, College Station, TX 77843, USA;3. Department of Landscape Architecture & Urban Planning, Texas A&M University, College Station, TX 77843, USA;1. College of Management and Economics, Tianjin University, Tianjin 300072, China;2. Department of Civil and Environmental Engineering, University of Alberta, Edmonton T6G 2R3, Canada;3. Department of Building and Real Estate, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region;1. School of Economics and Management, Beihang University, Beijing 100191, China;2. Key Laboratory of Complex System Analysis, Management and Decision (Beihang University), Ministry of Education, Beijing 100191, China;3. Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, China;1. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China;2. School of Vehicle and Mobility, Tsinghua University, Beijing 100084, China |
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Abstract: | The number and intensity of flood events have been on the rise in many regions of the world. In some parts of the U.S., for example, almost all residential properties, transportation networks, and major infrastructure (e.g., hospitals, airports, power stations) are at risk of failure caused by floods. The vulnerability to flooding, particularly in coastal areas and among marginalized populations is expected to increase as the climate continues to change, thus necessitating more effective flood management practices that consider various data modalities and innovative approaches to monitor and communicate flood risk. Research points to the importance of reliable information about the movement of floodwater as a critical decision-making parameter in flood evacuation and emergency response. Existing flood mapping systems, however, rely on sparsely installed flood gauges that lack sufficient spatial granularity for precise characterization of flood risk in populated urban areas. In this paper, we introduce a floodwater depth estimation methodology that augments flood gauge data with user-contributed photos of flooded streets to reliably estimate the depth of floodwater and provide ad-hoc, risk-informed route optimization. The performance of the developed technique is evaluated in Houston, Texas, that experienced urban floods during the 2017 Hurricane Harvey. A subset of 20 user-contributed flood photos in combination with gauge readings taken at the same time is used to create a flood inundation map of the experiment area. Results show that augmenting flood gauge data with crowdsourced photos of flooded streets leads to shorter travel time and distance while avoiding flood-inundated areas. |
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Keywords: | Flood Crowdsourcing Artificial intelligence Floodwater depth Route optimization Emergency management |
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