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.

本资源包含提交至《水资源研究（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》中所使用的数据与工具。为充分利用日益丰富的高分辨率地形数据，亟需兼具简洁性与计算高效性的洪水淹没制图方法。本研究提出了一种名为GeoFlood的高分辨率地形数据洪水淹没制图新方法，该方法融合了用于高分辨率地形数据分析的先进方法GeoNet与最近河道高程（Height Above Nearest Drainage，HAND）。GeoFlood可将实时预报的河流水情快速转换为对应的洪水淹没图。在德克萨斯州中部开展的案例研究表明，采用本方法生成的洪水淹没图覆盖了详细FEMA（联邦紧急事务管理局，Federal Emergency Management Agency）洪水研究报告中的绝大多数淹没范围。研究结果显示，GeoFlood是一种适用于快速淹没制图的极具价值的解决方案。