Effective discharge computations for an intensively monitored Illinois stream

D. W. Crowder, Laura Lynn Keefer

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Substantial effort has been spent computing effective discharge (Q e) values and their corresponding flow recurrence intervals for different stream sizes and within different geographical and ecological regions. Existing literature reports recurrence intervals varying from less than 1.1 years to more than 10 years with a commonly accepted average of between 1.5 and 2.0 years. However, little is known about the accuracy and variability associated with estimating Qe. Using data from an intensely monitored watershed in Southern Illinois, an analysis was conducted to determine the influence that three existing methods of assigning discharge classes and loads carried by each discharge class have on Qe recurrence intervals. The different methods estimated recurrence intervals ranging from less than 1.1 years to 9.5 years. Methods for reducing the subjective nature of estimating Qe and validating Qe estimates as dominant discharges capable of forming and maintaining a channel are needed.

Original languageEnglish (US)
Title of host publicationRestoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress
StatePublished - Dec 1 2007
Event2007 World Environmental and Water Resources Congress: Restoring Our Natural Habitat - Tampa, FL, United States
Duration: May 15 2007May 19 2007

Publication series

NameRestoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress

Other

Other2007 World Environmental and Water Resources Congress: Restoring Our Natural Habitat
CountryUnited States
CityTampa, FL
Period5/15/075/19/07

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ASJC Scopus subject areas

  • Environmental Engineering
  • Water Science and Technology

Cite this

Crowder, D. W., & Keefer, L. L. (2007). Effective discharge computations for an intensively monitored Illinois stream. In Restoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress (Restoring Our Natural Habitat - Proceedings of the 2007 World Environmental and Water Resources Congress).