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洪水是自然界的一种严重灾害，它会毁坏沿河两岸的防洪堤及灌溉堰坝等水利设施，还会对人民生命财产和国民经济建设造成惨重损失。开化县地处山区，素有“九山半水半分田”之称，洪水频繁，洪水来时暴涨暴落，每年都将对开化县造成严重的灾害损失。针对开化山区溪流降水和洪灾
Floods are a serious disaster in nature. They destroy water conservancy facilities such as flood levees and irrigation barrage along both sides of the river, and cause heavy losses to people’s lives, properties and national economic construction. Located in the mountains, Kaihua County is known as “JiuShan semi-water and semi-sub-Tian”. Floods are frequent and the floods are soaring and violent. Every year, Kaihua County will cause serious disaster losses. Aiming at the stream precipitation and flood in Kaihua Mountain Area