1 School of Atmospheric Sciences, Sun Yat-sen University, and Key Laboratory of Tropical Atmosphere-Ocean System, Ministry of Education, and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), and Guangdong Province Key Laboratory for Climate Change and Natural Disaster Studies, Zhuhai, China. Gourley 5, Albert Kettner 6, and Nergui Nanding 7 View More View Less Peak months of flood frequency at subcatchment scale based on (a) actual and (b) natural inventories. The variations of flood events originated from each data source and inventory: (a) mean monthly count for each data source, (b) mean monthly count for each inventory, (c) mean yearly count for each inventory, and (d) monthly number of flood events in South Atlantic–Gulf and Texas–Gulf Basin against Niño-3.4 index. The distribution of flood event number from (a) actual and (b) natural flood inventories.ĭistribution of flood events in 17 major river basins under (a) regulated and (b) natural scenarios, and (c) events per subcatchment of both scenarios. Gauges with removed flood events are presented as red cross. The green circles are locations of USGS gauges that observed flood events, while black circles are gauges with no floods. The colored polygons with borders represent subcatchments where DFO events happened. The magnitude of peak flow at USGS gauge 07010000, highly reduced by regulation or diversion, is recovered based on simulation and precipitation verification, as shown in the bottom panel of (b).įlood events observed by USGS gauges and DFO during 1998–2013. The USGS gauge 09421500 in (a) is located below the Hoover Dam and downstream of another 70 dams, showing a small magnitude and variation of flow relative to its basin area and no significant flood event existed. Schematic view of the development of the multisourced flood inventories.Įxamples of (a) removed events and (b) recovered events.
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