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  2. 100-year flood - Wikipedia

    en.wikipedia.org/wiki/100-year_flood

    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 ...

  3. Flood insurance rate map - Wikipedia

    en.wikipedia.org/wiki/Flood_Insurance_Rate_Map

    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.

  4. Shoal Creek, Austin, Texas - Wikipedia

    en.wikipedia.org/wiki/Shoal_Creek,_Austin,_Texas

    In all, there are 655 structures within the 100-year floodplain. Most of the watershed, 71%, was developed before the 1991 Urban Watersheds Ordinance regulations. There are 54 roadways within the 100-year floodplain with 46 inundated by the 100-year, 41 inundated by the 25-year, 35 inundated by the 10-year, and 11 by the 2-year floods. [1] [note 2]

  5. Texas’ first-ever statewide flood plan estimates 5 million ...

    www.aol.com/texas-first-ever-statewide-flood...

    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 ...

  6. 2017 Arkema plant explosion - Wikipedia

    en.wikipedia.org/wiki/2017_Arkema_plant_explosion

    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 ...

  7. Sims Bayou - Wikipedia

    en.wikipedia.org/wiki/Sims_Bayou

    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.

  8. Floods in the United States (1900–1999) - Wikipedia

    en.wikipedia.org/wiki/Floods_in_the_United_States...

    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.

  9. Floodplain - Wikipedia

    en.wikipedia.org/wiki/Floodplain

    The NFIP offers insurance to properties located within a flood-prone area, as defined by the Flood Insurance Rate Map (FIRM), which depicts various flood risks for a community. The FIRM typically focuses on the delineation of the 100-year flood inundation area, also known within the NFIP as the Special Flood Hazard Area.

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