Floods are among the most frequent and costly natural disasters. Conditions that cause floods include heavy or steady rain for several hours or days that saturates the ground. Flash floods occur suddenly due to rapidly rising water along a stream or low-lying area. Here on the North Shore of Massachusetts flooded basements and flooding due to streams and rivers overflowing their banks can happen during the Spring months. Do you know what to do? Click here for more information and here for a printable flood safety checklist.