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Flooding Terms

These are various terms used on this site to describe flooding. The flood stages, in particular, are not established by the USGS; they are merely approximations of what flood stages would look like, and an attempt to differentiate between flooding that merely inconveniences residents, and flooding that causes significantly more effects.

Creek Stage – refers to the height of the water level at any given time. The term flood stage is used to describe when the creek is in flood; when its level is above its banks.

  • Minor flooding – caused by approximately 2″ of rain in less than 24 hours. The creek is merely above its banks. Flooding of paths in Armstrong Park is possible, but no structures are threatened.
  • Moderate flooding – caused by approximately 4″ of rain in less than 24 hours. The creek is rising above street level, but streets are still navigable. Most paths in Armstrong Park are impassible, as the flood retention facilities are overflowing.
  • Major flooding – caused by over 7″ of rain in less than 24 hours. Flooding of streets is widespread, from Kuhn Road to Hiawatha Drive, with many (if not most) impassable. Houses in the lowest lying areas are flooded or completely surrounded by water.

QPF – quantitative precipitation forecast; that is, the amount of water forecast to fall from the sky. Forecasts come from the Hydrometeorological Prediction Center, a branch of the National Weather Service, usually covering a period of 24 hours, 00z today to 00z the next day (6:00p CST, 7:00p CDT).

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