GeoFlood WRR Dataset and Tools

This resource contains data and tools used in the paper “GeoFlood: large-scale flood inundation mapping based on high-resolution terrain analysis” submitted to Water Resources Research.
Simple and computationally efficient flood inundation mapping methods are needed to take advantage of increasingly available high-resolution topography data. In this work, we present a new approach, called GeoFlood, for flood inundation mapping using high-resolution topographic data. This approach combines GeoNet, an advanced method for high-resolution terrain data analysis, and the Height Above Nearest Drainage. GeoFlood can rapidly convert real-time forecasted river flow conditions to corresponding flood maps. A case study in central Texas demonstrated that the flood maps generated with our approach capture the majority of the inundated extent reported by detailed FEMA flood studies. Our results show that GeoFlood is a valuable solution for rapid inundation mapping.

本资源包含投稿至《Water Resources Research》的论文《GeoFlood：基于高分辨率地形分析的大规模洪水淹没制图》中所用的数据与工具。为充分利用日益丰富的高分辨率地形数据，亟需简便且计算效率优异的洪水淹没制图方法。本研究提出了一种名为GeoFlood的全新方法，用于基于高分辨率地形数据开展洪水淹没制图。该方法结合了用于高分辨率地形数据分析的先进方法GeoNet，以及最近邻河道高程（Height Above Nearest Drainage，HAND）。GeoFlood可快速将实时预报的河道径流条件转换为对应的洪水淹没图。本研究在德克萨斯州中部开展了案例研究，结果表明，采用本方法生成的洪水淹没图能够覆盖美国联邦紧急事务管理局（Federal Emergency Management Agency，FEMA）详细洪水研究报告中披露的绝大多数淹没范围。研究结果表明，GeoFlood是一种用于快速洪水淹没制图的极具价值的解决方案。