Preprints
https://doi.org/10.5194/hess-2019-618
https://doi.org/10.5194/hess-2019-618

  28 Jan 2020

28 Jan 2020

Status: this preprint has been withdrawn by the authors.

Assessment of streamflow decrease due to climate vs. human influence in a semiarid area

Hamideh Kazemi1,2, Hossein Hashemi2, Fatemeh Fadia Maghsood2, Seyyed Hasan Hosseini2,3, Ranjan Sarukkalige1, Sadegh Jamali4, and Ronny Berndtsson2 Hamideh Kazemi et al.
  • 1School of Civil and Mechanical Engineering, Curtin University, Perth, Australia
  • 2Department of Water Resources Engineering & Center for Middle Eastern Studies, Lund University, Lund, Sweden
  • 3Department of Water Engineering, Faculty of Agriculture, University of Tabriz, Tabriz, Iran
  • 4Department of Technology and Society, Lund University, Lund, Sweden

Abstract. This paper uses the Budyko method to investigate mean annual streamflow changes, due to climate variation and human influence, in the important Karkheh River Basin in western Iran. To validate the results, hydrological modelling (HBV model) and Landsat 5 Thematic Mapper (TM) images were used for the study period between 1980 and 2012. The recently developed DBEST (Detecting Breakpoints and Estimating Segments in Trend) method identified an abrupt negative change in the streamflow trend in 1994–5. The results show that the observed streamflow decrease in the Karkheh River is associated with both climate variation and human influence. The combination of increased irrigated area (from 9 to 19 % of the total basin area), reduction of forests (from 11 to 3 %), and decreasing annual precipitation has significantly reduced streamflow in the basin. Moreover, the results show that the streamflow reduction in the Karkheh Basin is more sensitive to the change in precipitation than temperature.

This preprint has been withdrawn.

Hamideh Kazemi et al.

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

Hamideh Kazemi et al.

Hamideh Kazemi et al.

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This preprint has been withdrawn.

Short summary
This paper uses the Budyko method to investigate mean annual streamflow changes, due to climate variation and human influence, in the important Karkheh River Basin in western Iran. The results show that the observed streamflow decrease in the Karkheh River is associated with both climate variation and human influence. The combination of increased irrigated area, reduction of forests and decreasing annual precipitation has significantly reduced streamflow in the basin.