First, the flood. Two independent methods—one scientific and the other biblical—will be used to calculate the date the flood began. Over the last 2,000 years, Bible scholars and archaeologists have proposed and debated dozens of conflicting biblical chronologies. Although most biblical chronologies give dates for the flood that are reasonably close to the scientific conclusion, explained below, five proposed biblical chronologies lie within the ±100 year accuracy of the scientifically derived date for the beginning of the flood.