Floodwaters break through a walkway in Columbia, S.C., Monday, Oct. 5, 2015. After a week of steady rain, the showers tapered off Monday and an inundated South Carolina turned to surveying a road system shredded by historic flooding. (AP Photo/Chuck Burton)
Floodwaters break through a walkway in Columbia, S.C., Monday, Oct. 5, 2015. After a week of steady rain, the showers tapered off Monday and an inundated South Carolina turned to surveying a road system shredded by historic flooding. (AP Photo/Chuck Burton)

In October historic floods hit South Carolina destroying homes and businesses. The floods also pointed out the infrastructure flaws that continue to put thousands in harm’s way: the dams. 

Despite what you may think, most dams are made from materials directly from the earth. These particular dams require continued maintenance, proper design, and often are unreliable once massive amounts of water hit. Brian Clark Howard, writing for National Geographic, looked at four factors that contribute to dam failure. 

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