新华社北京８月７日电（记者林晖）记者从国家防总获悉，８月６日２２时和８月７日５时，长江中游干流城陵矶和洞庭湖七里山两站水位分别降至警戒水位以下，这标志着超警时间长达１７天的长江干流及洞庭湖水位已全线退警。

    Beijing, aug. 7 (Reuters)（Reporter LinHui）Reporters from the office learned，August 6, when 22 August 7, and five，Middle Yangtze river mainstream city los dongting lake in seven tombs and the water level down to two station respectively under the warning level，This marks a super p for 17 days of the Yangtze river mainstream and water had back all the dongting lake。

    据了解，７月份以来，长江流域遭遇多次大范围强降雨过程，长江干流先后形成４次洪峰，三峡水库出现建库以来（也是１９８１年以来）最大洪水，长江上游部分江段出现超历史实测记录的洪水，中游干流及洞庭湖区发生超警洪水。

    According to understand，Since July，Many large scope of the Yangtze river basin in heavy rainfall process，The Yangtze river flood peak form has four times，In the three gorges reservoir built since the library（Also since 1981）Maximum flood，Part of the upper reaches of Yangtze river JiangDuan appear ChaoLiShi measured record flood，The middle of dongting lake and river flood happened super p。

    国家防总、长江防总坚持蓄泄兼筹、江湖两利、上中下游协调、左右岸兼顾、干支流配合的原则，统筹考虑上下游水情变化和防洪形势需要，加强三峡水库科学调度，先后拦蓄洪水１３０亿立方米，降低三峡水库下游荆江河段水位１至２米，控制长江中游水位不超警，缩短河段超警时间１０天左右，保证了长江中下游干堤未出现重大险情，有效减轻了长江中下游防守压力。

    The office、The Yangtze river office insist on storage and discharge and raise、River's lake benefiting、Coordination on middle and lower reaches、ZuoYouAn consideration、Based on the principles of separately，Overall consideration upstream and downstream water, the flood control situation changes and needs，Strengthen scientific control of the three gorges reservoir，Reduce the flood has 13 billion cubic meters，Reduce the three gorges reservoir downstream river water level 1 to 2 meters river，Control middle Yangtze river water level not the police，Shorten the time river police about 10 days，Guarantee of the middle and lower Yangtze does not appear GanDi great danger，Effective relieve the pressure of the middle and lower Yangtze defense。

    此外，国家防总、长江防总还利用洪水间歇和水位消退的有利时机，３次调整三峡水库泄量，最小时减至２５０００立方米每秒，为疏散三峡坝区待闸船舶创造了通航条件。目前，已疏散积压滞留船只１２００多艘，剩余５５７艘船只正陆续通过三峡坝区，航运秩序已恢复正常。

    In addition，The office、The Yangtze river office also use intermittent and water level retreat of the favorable opportunity，Three times in the three gorges reservoir discharge of adjustment，The most hours to 25000 cubic meters per second，The three gorges dam region for evacuation to brake ship created navigation condition。At present，Already the backlog of more than 1200 ships stranded evacuation of the ships，Remaining 557 ships are slowly through the three gorges dam，Shipping order had returned to normal。