WEST VIRGINIA- Rescue crews have worked steadily to respond to emergency calls due to the fast-moving floodwaters.
At least 26 are dead, including young two boys, ages eight and four, making this the deadliest U.S. flooding since 2010.
And while some of the high waters have started to recede, officials warn residents to watch out for "flood debris, downed power lines and downed trees".
According to the West Virginia Division of Homeland Security and Emergency Management, over 32,000 residents and businesses are without power Sunday morning.
Governor Earl Ray Tomblin declared states of emergency for 44 counties on Thursday and has activated 200 National Guard members to assist the eight counties with the most devastation.
He is authorized to activate 300 more Guard members if additional help is needed.
"Together with the National Guard, our first responders, local emergency management officials and firefighters from across the state have been working around the clock, and we are deeply appreciative of their efforts," Tomblin said in a statement.
The National Weather Service has called this a "1,000 year flood", due to the one in 1,000 chance of this type of rainfall happening in any given year.