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Statistical summaries of selected Iowa streamflow data through September 2013.

File Language:
English


Details

  • Alternative Title:
    Open-File Report 2015-1214
  • Creators:
    Eash, David A. ; O'Shea, Padraic S. ; Nguyen, K. T. ; Montgomery, Nicholas L. ; Simonson, Adrian J. ; Weber, Jared R.
  • Corporate Contributors:
    Iowa. Dept. of Transportation ; Iowa. Highway Research Board ; United States. Army Corps of Engineers ; United States. Department of the Interior ; Geological Survey (U.S.)
  • Subject/TRT Terms:
  • Publication/ Report Number:
    Iowa DOT Research Project TR-669
  • Resource Type:
    Tech Report
  • Geographical Coverage:
    Iowa
  • Corporate Publisher:
    United States. Geological Survey (USGS)
  • Abstract:
    Statistical summaries of streamflow data collected at ; 184 streamgages in Iowa are presented in this report. All ; streamgages included for analysis have at least 10 years of ; continuous record collected before or through September ; 2013. This report is an update to two previously published ; reports that presented statistical summaries of selected Iowa ; streamflow data through September 1988 and September ; 1996. The statistical summaries include (1) monthly and ; annual flow durations, (2) annual exceedance probabilities of ; instantaneous peak discharges (flood frequencies), (3) annual ; exceedance probabilities of high discharges, and (4) annual ; nonexceedance probabilities of low discharges and seasonal ; low discharges. Also presented for each streamgage are graphs ; of the annual mean discharges, mean annual mean discharges, ; 50-percent annual flow-duration discharges (median flows), ; harmonic mean flows, mean daily mean discharges, and ; flow-duration curves. Two sets of statistical summaries are ; presented for each streamgage, which include (1) long-term ; statistics for the entire period of streamflow record and ; (2) recent-term statistics for or during the 30-year period of ; record from 1984 to 2013. The recent-term statistics are only ; calculated for streamgages with streamflow records pre-dating ; the 1984 water year and with at least 10 years of record during ; 1984–2013. The streamflow statistics in this report are ; not adjusted for the effects of water use; although some of ; this water is used consumptively, most of it is returned to ; the streams.
  • Format:
    PDF
  • Download URL:
    https://rosap.ntl.bts.gov/view/dot/30690/dot_30690_DS1.pdf
  • File Type:
    Filetype[PDF - 1.26 MB]
  • Collection(s):
    US Transportation Collection
  • Main Document Checksum:
    urn:sha256:b4d6d60392faabd2c0bcf4f5ec166aa580783d2ba4e826050276c08fabd78edb
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