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科左后旗东、西辽河防洪工程属于辽宁、吉林、内蒙古三省(区)三江口地带防洪工程的一部分,与上游水库、滞洪区等构成后旗“东大荒地区”重要防洪体系。防洪工程包括堤防、险工护岸、穿堤涵闸桥及非常洪水应急工程等。工程保护面积350KM~2(合52.5万亩)。1986年东辽河水灾后,经复堤堵口,后旗东辽河段安全行洪能力约500m~3/s,接近五年一遇标准。西辽河近年安全行洪能
Kezuohouqi East and West Liaohe flood control projects are part of flood control projects in the Sanjiangkou area of Liaoning, Jilin and Inner Mongolia (three districts), and form an important flood control system of the “Dadongren area” with the upstream reservoirs and flood detention areas. Flood control projects include embankments, dangerous shore revetments, embankments and culvert bridges, and very flood emergency projects. Project protection area 350KM ~ 2 (525,000 mu). After the flood of East Liaohe River in 1986, the safe flood-discharging capacity of the Dongliao reach of the Houqian Banner after the dyke dam embankment was about 500m ~ 3 / s, close to the standard of once every five years. West Liaohe flood safety in recent years