7月17日，一名男子走过赣江上几乎被淹没的浮桥。当日，受长江一号洪峰倒灌鄱阳湖和上游降水影响，江西赣江南昌段水位被托高至18.56米，相比降雨前7月13日的17.5米上涨了1米。据了解，赣江流域主汛期为4月至6月，长江中上游主汛期为6月至9月，因此，每年7月至8月，鄱阳湖会出现江水倒灌现象。今年洪峰来临恰逢上游持续降雨，使得鄱阳湖主要水源之一赣江的水位进一步上升。新华社记者 周密 摄     July 17,，A man walked on ganjiang almost drowned pontoon。On that day，The Yangtze river flood peak flow backward, by a lake and upstream precipitation influence，Jiangxi province nanchang section water level was "gan high to 18.56 meters，Compared with before rain on 13 July 17.5 meters of rose 1 m。According to understand，ZhuXunQi ganjiang river basin for April to June，Reaches of the Yangtze river ZhuXunQi for June to September，so，Each July to August，Poyang lake will appear flowing river phenomenon。The flood peak coming this year comes for rainfall upstream，That one of the main water poyang lake ganjiang water level rise further。The xinhua news agency careful perturbation

    7月17日，赣江南昌段上空阴云密布。新华社记者 周密 摄     July 17,，Nanchang clouds over the period gan。The xinhua news agency careful perturbation