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台风引起强降水,潍坊水库苏醒

2017-08-12 08:27:26   中国青年网

干枯的牟山水库终于迎来了蓄水。8月7日8时,牟山水库已蓄水1123万立方米。

□ 本 报 记 者 郑颖雪

本报通讯员 张晓晗

受10号台风“海棠”减弱后的低压环流影响,潍坊市各地从8月2日开始出现了降雨和雷电天气。8月6日夜间,又出现了短时强降水和雷电天气。8月7日,记者从潍坊市水文局、气象局获得雨水情信息显示,8月7日8时全市27座大中型水库总蓄水量4.1161亿立方米(大型水库2.6800亿立方米,中型水库1.4361亿立方米),总出库流量17.01立方米/秒(墙夼水库16.00立方米/秒),较去年同期蓄水多蓄1.9234亿立方米,较常年同期蓄水少蓄1.7507亿立方米。与8月2日8时相比,水库蓄水量共增加7992万立方米,其中增水较大的有墙夼水库2226万立方米、牟山水库1123万立方米、冶源水库993万立方米、峡山水库646万立方米、于家河水库529万立方米、高崖水库506万立方米、马宋水库281万立方米、嵩山水库262万立方米、白浪河水库95万立方米。

8月2日晚上7时许,潍坊城区上空开始下起了大雨,并且持续到3日早晨。潍坊市进入汛期以来,降雨一直不间断地出现,大部分干涸的水库开始出现了蓄水。

2013年秋季以来,潍坊市降水减少,出现了持续的干旱,各大水库蓄水量逐渐减少,多个水库出现了干枯的情况。马宋水库自1959年建成后一直是昌乐的重要水源地,也是一座以防洪为主,集灌溉、供水及养殖于一体的中型水库,控制流域面积180平方公里,总库容1215万立方米,死库容27万立方米。从2014年5月份由于缺少进水,水库蓄水量逐渐减少,逐渐见底,水库底部被周边居民种上了庄稼。

今年入汛以来,潍坊市虽然出现了多次降水,但由于前期干旱严重,马宋水库并没有出现蓄水的情况。8月3日,马宋水库管理局相关负责人表示,8月2日夜间至3日清晨的降水,降水量较大,马宋水库目前已开始蓄水,8月7日8时已有蓄水281万立方米。

近年来的持续干旱,让安丘境内的牟山水库蓄水量逐渐减少,最终在2015年彻底干涸。为了应对干旱,安丘市在牟山水库底部开挖水渠和打井,抽取地下水。

随着今年入汛来的多次降水,干枯的牟山水库终于迎来了蓄水,而且蓄水量不断增多。记者从牟山水库管理局了解到,受强降水影响,8月7日8时,牟山水库已有蓄水1123万立方米,随着降水的持续,蓄水还将不断增加。

峡山水库作为潍坊市最大的水源地,也是城区用水的水源地之一,然而受连年干旱影响,蓄水量持续下降,截至6月底,蓄水量已经低于死库容,不足3000万立方米。记者从潍坊市水文局获悉,与8月2日8时相比,8月7日8时,峡山水库蓄水量增加了646万立方米。

白浪河水库作为潍坊市城区的另一个水源地,近年来同样出现了水位下降、蓄水量减少的情况。2015年7月,潍坊市实施了引黄入白工程,将黄河水引入白浪河水库,使水库里保持着一定的蓄水量。今年入汛后的几场降水过后,白浪河水库里的蓄水增多。与8月2日8时相比,8月7日8时,白浪河水库蓄水量增加了95万立方米。

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