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  1. Why do the values for the 100-year flood seem to change with every flood?

    ... Learn More: The "100-Year Flood" Floods: Recurrence intervals and 100-year floods ...

    dgarcia@usgs.gov - 2017-05-18 05:53

  2. Where can I find flood maps?

    ... of flood events from the USGS: WaterWatch: Map of floods and high-water conditions Using WaterWatch to track flooding ...

    drupal7admin - 2017-05-18 05:53

  3. We had a "100-year flood" two years in a row. How can that be?

    ... flood" is used to describe the recurrence interval of floods. The 100-year recurrence interval means that a flood of that magnitude ... Learn more:  T he "100-Year Flood" Floods: Recurrence intervals and 100-year floods ...

    drupal7admin - 2017-05-18 05:53

  4. What is a 1,000-year flood?

    ... Learn More: The "100-Year Flood" Floods: Recurrence intervals and 100-year floods ...

    dgarcia@usgs.gov - 2017-05-18 05:53

  5. Does an increase in the 100-year flood estimate originate from climate or land-use change?

    ... Learn More: The "100-Year Flood" Floods: Recurrence intervals and 100-year floods ...

    dgarcia@usgs.gov - 2017-05-18 05:53

  6. How can a 1000-year rainfall not result in a 1000-year flood?

    ... Learn More: The "100-Year Flood" Floods: Recurrence intervals and 100-year floods ...

    dgarcia@usgs.gov - 2017-05-18 05:53

  7. How are floods predicted?

    How are floods predicted? Flood predictions require several types of data: The amount of ... can be valuable for determining possible severity of the flooding.  Knowledge about the characteristics of a river's drainage ...

    drupal7admin - 2017-05-18 05:53

  8. What are the two types of flooding?

    ... flooding? There are two basic kinds of floods, flash floods and the more widespread river flooding. Flash floods generally cause ...

    drupal7admin - 2017-05-18 05:53

  9. Floods give new meaning to “car pool lane”.

    ... to recede, the nation began 2016 with major floods in the Missouri, Ohio, and Mississippi River basins, setting new winter flood records.   Learn More: Floods and Droughts FAQs Flood Inundation Mapper Water alert ...

    dgarcia@usgs.gov - 2016-03-31 13:23

  10. How often are real-time stream-gaging data updated?

    ... times may be more frequent during critical events (floods, for example). Data from current sites are relayed to USGS offices via ...

    drupal7admin - 2017-05-22 18:57

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