Search results
Results from the WOW.Com Content Network
A 100-year flood is a flood event that has on average a 1 in 100 chance (1% probability) of being equaled or exceeded in any given year. [1]
For example, a 10-year flood has a 1/10 = 0.1 or 10% chance of being exceeded in any one year and a 50-year flood has a 0.02 or 2% chance of being exceeded in any one year. This does not mean that a 100-year flood will happen regularly every 100 years, or only once in 100 years. Despite the connotations of the name "return period". In any given ...
Theoretically a 100-year flood has a 1 percent chance (1/100 = 0.01 or 1 percent) of occurring in any given year and a 500-year flood has as a 0.2 percent chance (1/500 = 0.002 or 0.2 percent) of occurring in any given year. [12] However, these expected flood elevations actually occur more or less often than expected. [13]
"The magnitude and severity of this flood event was simply overwhelming, ... In some areas, the multi-month rainfall was a 100-year or 1000-year flood.
The term 100-year flood indicates that the area has a one-percent chance of flooding in any given year, not that a flood will occur every 100 years. [ 2 ] Such maps are used in town planning , in the insurance industry, and by individuals who want to avoid moving into a home at risk of flooding or to know how to protect their property.
"We looked at this in one case for the Napa River, and basically, your average annual winter storm could turn into the 100-year flood event if the ground is already saturated," he said. "Add any ...
A 100-year flood is a flood event that has a 1% probability of occurring in any given year. 100-year flood may also refer to: Floods 1997 ...
The refuge protects the river's floodplain and all the wildlife that live within it. More than 3.7 million people visit each year to hunt, fish and otherwise enjoy the area's tranquil backwaters ...