Red River Flood Map Files

Heavy rainfall occurred across Louisiana during March 8-19, 2016, as a result of a massive, slow-moving southward dip in the jet stream, which moved eastward across Mexico, then neared the Gulf Coast, funneling deep tropical moisture into parts of the Gulf States and the Mississippi River Valley. The storm caused major flooding in north-central Louisiana.Digital flood-inundation maps for a 28.5-mile reach within the communites of South Shreveport and Keithville east of the Red River in Caddo and De Soto Parishes, LA were created by the U.S. Geological Survey (USGS) in cooperation with Federal Emergency Management Agency (FEMA) to support response and recovery operations following a March 8-19, 2016 flood event. The inundation maps depict estimates of the areal extent and depth of flooding corresponding to 6 high-water marks (HWM) identified and surveyed by the USGS following the flood event.

2016年3月8日至19日，受急流（jet stream）中一处大规模缓慢南移的低压槽影响，路易斯安那州全域遭遇强降雨天气。该低压槽向东移动途经墨西哥，随后逼近墨西哥湾沿岸，将充沛的热带水汽输送至墨西哥湾沿岸各州及密西西比河流域部分区域。此次风暴引发路易斯安那州中北部严重洪涝灾害。美国地质调查局（U.S. Geological Survey, USGS）联合联邦紧急事务管理局（Federal Emergency Management Agency, FEMA），针对2016年3月8日至19日洪涝事件后的应急响应与灾后恢复工作，为路易斯安那州卡多堂区（Caddo Parish）与迪索托堂区（De Soto Parish）红河以东的南什里夫波特（South Shreveport）和基斯维尔（Keithville）社区范围内一段28.5英里的河段，制作了数字洪水淹没地图。该淹没地图展示了对应此次洪涝事件后美国地质调查局勘测确定的6个高水位标记（high-water marks, HWM）的洪水范围与水深估算结果。