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FIRMs display areas that fall within the 100-year flood boundary. Areas that fall within the boundary are called special flood hazard areas (SFHAs) and they are further divided into insurance risk zones. 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 ...
[6]: 16–19 Flood events greater than the 50-year flood occurred at intervals of 4 to 192 years since 1501, and the 50-year flood of 2002 was followed only 11 years later by a 500-year flood. Only half of the intervals between 50- and 100-year floods were within 50 percent of the nominal average interval.
Two-thirds of the bayous and creeks in Harris County experienced 500-year flood events. Houston Intercontinental Airport, which typically receives 46.07 inches (1,170 mm) of rain in a year, experienced 35.7% of its expected total in the first nine days of June. [1] The deluge flooded 95,000 automobiles and 73,000 houses throughout Harris County ...
This allowed for new development in the southern portion of the city, and removed an estimated 35,000 homes and 2,000 commercial structures from a 100-year floodplain. In 2016 the Houston Parks Board began a project to create trails and beautify areas along Sims Bayou. [4]
The state’s flood plan shows which Texans are most at risk of flooding and suggests billions of dollars more are needed for flood mitigation projects. Texas’ first-ever statewide flood plan ...
However, a June 2007 update floodplain map now indicated most of the facility was inside of 100-year floodplain, including the storage warehouses, backup generators and electrical transformers for commercial power. A smaller area of the facility was within the 500-year floodplain. [3] The organic peroxides are stored in nine storage buildings ...
The event was termed "the Tax Day flood" and pushed local creek and reservoir levels to new records. Until Hurricane Harvey in 2017, this was the worst flooding Houston had seen since 2001's Tropical Storm Allison. [69]
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related to: 100 vs 500 year floodplain houston