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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. FIRMs are ...
For river systems, a 100-year flood is generally expressed as a flowrate. Based on the expected 100-year flood flow rate, the flood water level can be mapped as an area of inundation. The resulting floodplain map is referred to as the 100-year floodplain. Estimates of the 100-year flood flowrate and other streamflow statistics for any stream in ...
The Grand River went above bankfull on the night of March 24, rising slowly for the next four days. It broke the previous high-water mark by over 60 cm (2.0 ft), and was considered a once in 100 year flood. Over one-half of the population on the west side of the river was inundated. On the east bank of the river, numerous factories went underwater.
New floodplain maps outline hundreds of homes across Davidson County that are eligible for flood insurance policies given their potential risk. Hundreds of Nashville homes added to 100-year ...
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]
Peak discharges along the Flint and Ocmulgee rivers exceeded 100-year flood levels. [18] At least 100 dams and recreational watersheds suffered severe damage or were destroyed. Many roads were inundated, forcing the closure of 175 roads and 1,000 bridges. [18] [19] Damage to highway infrastructure exceeded $130 million. [18]
In some areas, the multi-month rainfall was a 100-year or 1000-year flood. I think something that's both profound and underappreciated: 1993 is STILL the most costly US flood*. The margin is ...
At a recent church service in Cleveland, a group of visitors from a rural Alabama community nearly 900 miles away, including pastor and business owner Timothy Williams, joined congregants in ...