Floods caused by heavy rains in northeastern China stranded tens of thousands of residents without power Wednesday, as the worst flooding in more than a decade continued to besiege areas of the country. Floods this year have killed at least 823 people with 437 missing and have caused tens of billions of dollars in damage, the State Flood Control and Drought Prevention reported. More heavy rains are expected for the southeast, southwest and northeast parts of the country through Thursday. About 30,000 residents in Kouqian town were trapped after torrential rains drenched the northeastern province of Jilin on Wednesday, the official Xinhua News Agency reported. Water began flooding the town after the nearby Xingshan Reservoir and the Wende and Songhua rivers overflowed.