Smoothed minima baseflow separation tool for perennial and intermittent streams

Hafzullah Aksoy*, Necati Erdem Unal, Ali Osman Pektas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

37 Citations (Scopus)


The United Kingdom Institute of Hydrology (UKIH) smoothed minima baseflow separation method originally developed for the daily flow data of perennial streams and adopted for intermittent streams is presented. The adopted method (AdUKIH) is the generalized version of the UKIH and hence applicable not only to intermittent streams but also to perennial streams. The AdUKIH method is applied on three daily streamflow gauging stations from the European part of Turkey, the Thrace region. The AdUKIH enables one to change the parameter 0.9 in the UKIH method and also introduces different block sizes, which is limited to five days in the original UKIH method. The AdUKIH method is considered a useful tool in helping practitioners and researchers to separate continuous baseflow from the daily flow in perennial and intermittent streams.

Original languageEnglish
Pages (from-to)4467-4476
Number of pages10
JournalHydrological Processes
Issue number22
Publication statusPublished - 30 Oct 2008


  • AdUKIH
  • Baseflow separation
  • Daily streamflow
  • Intermittent stream
  • Perennial stream
  • Recursive digital filter
  • Smoothed minima
  • UKIH method


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