When.com Web Search

  1. Ads

    related to: 100 year flood zone meaning in illinois map

Search results

  1. Results From The WOW.Com Content Network
  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. FIRMs are ...

  4. 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 ...

  5. Return period - Wikipedia

    en.wikipedia.org/wiki/Return_period

    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".

  6. New flood maps show US damage rising 26% in next 30 years due ...

    www.aol.com/news/flood-maps-show-us-damage...

    Over the next three decades, the cost of flood damage is on pace to rise 26% due to climate change alone, an analysis of our new flood risk maps shows. That’s only part of the risk.

  7. Most people hit by Hurricane Helene do not have flood insurance

    www.aol.com/most-people-hit-hurricane-helene...

    A recent nationwide study found 24% of locations where people are building to be located in that buffer zone, or immediately outside the 100-year flood zone. "We all love to live near water," she ...

  8. Driftless Area - Wikipedia

    en.wikipedia.org/wiki/Driftless_Area

    Small towns in a deep steep valley going down to the Mississippi are at risk every 50 to 100 years or so of a major flood, as with the wreck of Gays Mills, Wisconsin, in August 2007, or the holding of the levee in Houston, Minnesota, (on the South Fork Root River) at the same time. Metropolitan areas have flood walls (See 2007 Midwest flooding).

  9. 25 years later: The Great Flood of 1993 remains worst river ...

    www.aol.com/weather/25-years-later-great-flood...

    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*.