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Research and Applications Needs in Flood Hydrology Science A Summary of the October 15, 2008 Workshop of the Planning Committee on Hydrologic Science (2009) / Chapter Skim
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Topic II What Can and Should Be the Role of New Observing Methods, Both In Situ (Including New Sensor Technologies) and Remote Sensing? How Might Approaches to the Estimation of Hydrologic Extremes Differ Based on the Richness of the Historic Observations?
Pages 6-9

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 6...
... The water surface elevation is routinely gauged and combined with periodically collected velocity profile data to form a rating curve indicative of discharge. This approach, however, does not capture the complexity of floodwater flows because these are unbounded and have velocities that vary spatially as well as temporally.
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From page 7...
... Merging data at disparate scales was viewed by some as a very difficult challenge in many cases, but the National Weather Service (NWS) has done this on an ad hoc basis, for example, using radar information on rainfall to constrain a stochastic model on storms.
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From page 8...
... It is not enough, they said, to have collected the data, but it is essential to make investments in data analysis to develop useful information products such as precipitation frequency analyses and flood frequency analyses. Real-time access to information for decision support and rapid access for analysis would also be important, and a participant noted that the Federal Emergency Management Agency has funds for post-event data collection in presidentially declared disasters.
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From page 9...
... Topic II 9 are their modes of failure and how do those failure modes affect the watershed and its people and environment? What do we actually know about how flood risk changes after these structures are put in place -- risk from smaller floods versus risk from great floods.
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Key Terms

  • water heights
  • participant noted
  • physical elements
  • incorrect water
  • flood frequency

  • water surface
  • precipitation frequency
  • hydrodynamic models
  • national weather
  • surface elevation

  • impacts themselves
  • weather service
  • flood risks
  • hydrodynamic flood
  • consider flood

  • flood models
  • flood hydrology
  • flood waters
  • affects flood
  • flood risk

  • water elevations
  • water ocean
  • water sources
  • annual flood
  • water routing

  • flood control
  • water height
  • flood wave
  • water marks
  • routinely gauged


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