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国家防总:入汛以来24条河流发生超警以上洪水

2017-05-26 13:56:32   央视网

今年3月31日入汛以来,全国平均降水量96毫米,较常年同期略偏少,全国有24条河流发生超警以上洪水,其中3条河流发生超保证水位的洪水,部分地区遭受洪涝灾害;有1个台风生成。目前,全国汛情总体平稳,汛情主要呈现以下几个特点:

1.降水呈现“西多东少”分布。入汛以来,我国西北大部、西南地区及海南等地降水偏多3~7成,但是东北西部、华北东部、江南中南部等地偏少4~9成。南方共发生4次强降水过程,5月7日凌晨至下午,广州市出现了历史罕见特大暴雨,黄埔区九龙镇24小时降水量达545毫米。

2.部分河流来水和水库蓄水偏多。入汛以来,与常年同期来水量相比,长江干流偏多1~2成,淮河、珠江接近常年,但是黄河上中游偏少2~4成,海河流域拒马河偏少1倍。当前,全国水库蓄水总量较常年偏多1成,其中海南、安徽、河北、湖北、青海等地偏多2~6成,但是宁夏、内蒙古、天津等地偏少2~5成。

3.部分江河水位较常年偏高。与常年同期水位相比,当前,西江偏高0.12米,太湖偏高0.04米,淮河中游偏高0.31米;但是长江中下游及两湖较2008年三峡水库正式蓄水以来同期均值偏低1.03~1.66米。

今年,国家防总组织开展了五个层级的汛前检查。目前,国家层面针对大江大河和重点地区备汛情况的9个检查组已全部完成,并按照“一省一单”的方式,督促各地对薄弱环节和隐患进行整改。其他层级的检查还有行业自查、国家防办督查、各流域防总和省级防指检查也都在收尾阶段。

此外,国家防总部署落实各地水毁修复任务,先后派出50多个工作组现场督导检查。目前全国17.57万处水毁修复任务已全部完成。

国家防办于3月1日开始24小时值班,提早进入应急值守状态,密切监视全国雨情水情汛情旱情,先后向有关省级防指和流域防总发出20多个通知,派出40多个工作组。下一步,国家防总、水利部以及各流域防总、各地防指,将密切监视雨水情和汛情灾情,加强预报预警和会商研判,及时启动应急响应,科学调度水利工程,强化险情巡查抢护和人员转移避险,全力以赴做好防汛抗洪的各项工作。(央视记者陈博)

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