一 | Australia’s federal government has declared a natural disaster in 23 flooded areas of New South Wales, which will shore up support for emergency funding. Australian Prime Minister Anthony Albanese announced he would be visiting areas that have been damaged by the flooding along with New South Wales Premier Dominic Perrottet on Wednesday.,At least 50,000 people were warned that they may have to abandon their homes on Tuesday after an initial 32,000 were warned of evacuation on Monday, according to Perrottet.,“This event is far from over. Please don’t be complacent, wherever you are. Please be careful when you’re driving on our roads. There is still substantial risk for flash flooding across our state,” Perrottet said.,Scary! ‘Life-threatening’ floods in Australia's Sydney #flood #sydney #australia pic.twitter.com/NfbQcqR8wT— DNA (@dna) July 4, 2022,Rescue crews in Sydney worked overnight as rivers rose to dangerous levels. At least 100 residents in the city had to be rescued from their cars and homes, according to State Emergency Service manager Ashley Sullivan.,Death Toll From Landslides, Floods in India’s Assam Rises to 179 - Photo, Video4 July, 04:44 GMT,The Bureau of Meteorology (BoM) reported that the storm cell—a cloud made up of an updraft, downdraft, and rain—has brought 31.5 inches of rain over the course of three days in the area of Sydney, well above Australia’s annual average of 20 inches.,Just a few days of heavy rain and here’s the result#Sydneyflood pic.twitter.com/12tYwosgzO— V☭der (@El_Psy_Congro0) July 4, 2022,"The good news is that by tomorrow afternoon, it is looking to be mostly dry but, of course, we are reminding people that these floodwaters will remain very high well after the rain has stopped," said Jonathan How, a meteorologist with BoM.,"There was plenty of rainfall overnight and that is actually seeing some rivers peak for a second time. So you've got to take many days, if not a week, to start to see these floodwaters start to recede," How added.,BoM has also predicted that the storm should move north after Tuesday, and a risk of continued flooding could remain in effect. While Australia is not wholly unfamiliar with extreme weather—with stifling hot summers and below freezing areas in high regions—the country is now experiencing a climate crisis that is causing bushfires, high rainfall, heatwaves and loss of vegetation and wildlife.。
二 | 省水利水电专家解答：预计要持续一周，退太快容易掏空大坝造成坍塌都市快报讯 昨天，杭州终于结束了连日的大范围强降雨，在主城区，太阳还时不时出来露了个脸。有市民调侃，终于可以洗衣服了，再不晴天没衣服穿了；也有市民在问，水库、河道里的水，什么时候能退？昨天20时35分，记者联系到了正在防汛一线值班的省水利水电勘测设计院相关负责人，请他来为大家作解答。青山水库超汛限水位6.26米水位正在平稳下降从8月14日晚上到8月15日晚上，杭州很多地区没有明显强降水，上游来水少了。但上游几个水库，包括青山水库、四岭水库、水涛庄水库等，前期拦了很多水，水位下降需要时间。总的来看，水位正在平稳下降。截至8月15日20时35分，青山水库水位为30.42米，超汛限水位（24.16米）6.26米；东苕溪瓶窑站水位6.94米，超保证水位（6.66米）0.28米，超警戒水位（5.66米）1.28米，下降速度每小时4~5厘米左右。四岭水库水位77.66米，超汛限水位（67.71米）9.95米。能不能让大水快些退？“那不行！一个是要根据下游情况，合理调配排水速度；二是不能退得太快。”这位负责人说，东苕溪水库水坝不像大江大河堤坝，是混凝土坝，大水快速退去影响不大，它是土坝，在大水里泡了很长时间了，堤坝吸饱了水，如果大水退得太快，会带走大量土壤，掏空坝体，威胁大坝平衡，甚至造成大坝坍塌。所以要控制速度，慢慢地退。要多久退到正常水位？大水退去，不光是上游水库要退水，东苕溪河道要退水，滞洪区也要退水，其他内河河道也要退水。目前下游水位还很高，内河河道也基本饱和了，水要慢慢地排。目前来看，预计还要持续一周时间。东苕溪的水，最后去了哪里？这位负责人给我们做了更清晰的介绍，主要有三个方向，一个是向北排进太湖，一个是向东排进杭嘉湖平原，再通过河道进黄浦江，排进大海；三是向南排，经嘉兴、海宁排进杭州湾。
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