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  2. 100-year flood - Wikipedia

    en.wikipedia.org/wiki/100-year_flood

    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] A 100-year flood is also referred to as a 1% flood. [2] For coastal or lake flooding, a 100-year flood is generally expressed as a flood elevation or depth, and may include wave effects. For river systems ...

  3. Flood insurance rate map - Wikipedia

    en.wikipedia.org/wiki/Flood_Insurance_Rate_Map

    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 ...

  4. List of counties in Illinois - Wikipedia

    en.wikipedia.org/wiki/List_of_counties_in_Illinois

    Illinois also has two counties named after the same person, New York governor DeWitt Clinton (DeWitt County, and Clinton County). Information on the FIPS county code , county seat , year of establishment, origin, etymology , population, area and map of each county is included in the table below.

  5. What's a 100-year flood? A hydrologist explains

    www.aol.com/news/whats-100-flood-hydrologist...

    A '100-year flood' doesn't mean you'll be flood-free for the next 99 years. Win McNamee/Getty ImagesA 100-year flood, like a 100-year storm, is one so severe it has only a 1% chance of hitting in ...

  6. Boneyard Creek - Wikipedia

    en.wikipedia.org/wiki/Boneyard_Creek

    Boneyard encased in sheet piling in Urbana Boneyard detention basin - Also known as Healey Street Basin Flood control park at 2nd St. and Springfield Ave. Boneyard Creek is a 3.3-mile-long (5.3 km) [ 2 ] waterway that drains much of the cities of Champaign and Urbana, Illinois , United States. [ 3 ]

  7. From the archives: Flood of 1957 devastated Belleville, led ...

    www.aol.com/news/archives-flood-1957-devastated...

    “I drove down North Illinois, and there were couches and beds floating in Richland Creek,” a Stag Brewery worker said. From the archives: Flood of 1957 devastated Belleville, led to 10 deaths ...

  8. List of municipalities in Illinois - Wikipedia

    en.wikipedia.org/wiki/List_of_municipalities_in...

    According to the 2020 United States census, Illinois is the 6th most populous state with 12,812,508 inhabitants but the 24th largest by land area spanning 55,499.0 square miles (143,742 km 2) of land. [1] Illinois is divided into 102 counties and, as of 2020, contained 1,300 municipalities consisting of cities, towns, and villages.

  9. Disaster proclaimed in St. Clair County. Flooding in ... - AOL

    www.aol.com/news/water-rescues-power-outages...

    More than 3,000 people were without power in St. Clair County, Ameren reports. ... County as heavy rain hit southwestern Illinois. ... moved into the property three years ago, with the last flood ...