Flooding in South Carolina Search and rescue operations continue in South Carolina after a weekend of major flooding OCTOBER 05, 2015 By Stephanie Kraus with AP reporting SEAN RAYFORD—GETTY IMAGES A man kayaks on Tall Pines Circle, in Columbia, South Carolina, on October 4. Heavy rain continues to slam South Carolina after a powerful storm flooded much of the state over the weekend. Emergency workers are going door-to-door to search for anyone who may still be trapped in their homes. At least seven deaths have been blamed on the storm so far. The storm dumped more than 20 inches of rain on one area of Columbia, South Carolina’s capital. On Sunday, floodwaters nearly touched the stoplights at a downtown intersection. Rainwater poured like a waterfall over jagged concrete where a road split apart. Many cars ended up completely under water on flooded streets. Even weather experts said they were surprised by the amount of rain that the storm dumped on the state. "The flooding is unprecedented and historical," said Dr. Marshall Shepherd, a meteorologist at the University of Georgia, in an email to The Associated Press. On Sunday, Governor Nikki Haley said the storm is the kind seen only once in a thousand years. President Barack Obama has declared a state of emergency for South Carolina, meaning that state and local authorities can receive federal money to help deal with the flooding. Hurricane Effects Earlier in the week, weather experts had predicted Hurricane Joaquin to slam the East Coast, but the hurricane turned away in the Atlantic Ocean. Despite the shift, Shepherd says tropical moisture from the hurricane helped boost the power of the rainstorm in the Carolinas and several neighboring states. According to the National Weather Service, Sunday was the wettest day in the history of Columbia. The rainfall total at the Columbia Metropolitan Airport was 6.87 inches, the highest one-day level ever recorded there. The flooding caused water main breaks that have threatened the drinking water supply for South Carolina’s capital city. Columbia officials told all 375,000 of its water customers to boil water before drinking it. They are also warning that some residents could be without drinkable water for days. Many roads and bridges across the state were washed out or under water. Nearly 75 miles of Interstate 95—the main link from the Southeast U.S. to the Northeast—were closed. People were told to stay off roads and remain indoors until floodwaters recede. It will take "weeks or months” to check all of the roads and bridges to make sure they are safe to use, according to State Adjutant General Bob Livingston Jr. Several schools and colleges canceled classes Monday and some businesses planned to stay closed. About 30,000 customers were without electricity at one point. Helping Others One of the hardest hit areas in Columbia was near Gills Creek, where a weather station recorded more than 20 inches of rain over the weekend. Rescue crews used boats to save the family of Jeff Whalen, whose house backs up on the creek. SEAN RAYFORD—GETTY IMAGES Charlene Stennis is taken to safety after her son was rescued from a stranded car on a flooded roadway on October 4. "A neighbor called to tell us we should get out as soon as we can," Whalen said. "About that point it was about a foot below the door and when we left it was a foot in the house. It came quickly obviously." Crews are putting a fluorescent orange X on the front doors of homes that have already been searched. Columbia Police Chief William Holbrook urged anyone still needing help to call 911, saying they would be taken out on military vehicles and bused to shelters. Columbia residents have also been helping one another. Rawlings LaMotte, 38, said he and a friend got into a small motorboat and transported several people to safety. "Until you've experienced something like this, you have no idea how bad it really is," LaMotte said.