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Investigating Low Flows trend Assessment in Isfahan Province

    Authors

    • Masud Nasri
    • Reza Modares
,

Document Type : Research Paper

10.22059/jrwm.2017.61981
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Abstract

Although a number of studies have been carried out around meteorological drought in Isfahan province, there is no specific study about hydrologic drought. In this study, low flows trend was analysed for the first time as the most important indicator of hydrologic drought in Isfahan province watersheds. Mean daily stream flow as a hydrologic indicator and 1-, 7-, 15-, 30- and 90-day low flows were estimated as hydrologic drought indicators for 22 gauging stations with at least 20 years of data record. Results of trend analysis using Mann-Kendall and Spearman correlation indicated that mean daily stream flow and low flows have negative trend at many gauging stations. Apart from GhalehShahrokh station, low flow indices in Zayandehrud dam basin have negative trend so that Eskandari station shows the highest degree of negative trend. Daily stream flow and low flows reduction especially in recent years is kind of warning for water resources management in Zayandehrud basin.

Keywords

  • Hydrologic drought
  • Low flows
  • trend
  • Zayandehrud Dam
  • Water Crisis
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References
[1] Azizabadi Farahani, M., Khalili, D. (2013). Seasonality Characteristics and Spatio-temporal Trends of 7-day Low Flows in a Large, Semi-arid Watershed. Water Res. Manage., 27, 4897-4911.
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[8] Kahya, E. and Kalaycı, S. (2004). Trend analysis of streamflow in Turkey. Journal of Hydrology, 128–144.
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[12] Modarres, R. (2008). Regional frequency distribution type of low flow in North of Iran by L-moments. Water resources management, 823-841.
[13] Modarres, R. and Sarhai, A. (2010). Frequency distribution of extreme hydrologic drought of southeastern region, Ira, Journal of hydrologic engineering. Journal of Hydrologic. Engineering., 15(4), 255–264.
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[15] Saadat, S., Davar Khalili, A., Kamgar-Haghighi, A., Zand-Parsa, S.( 2013). Investigation of spatio-temporal patterns of seasonal streamflow droughts in a semi-arid region. Natural Hazards, 69:1697–1720.
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Journal of Range and Watershed Managment
Volume 70, Issue 1
June 2017
Pages 247-256
Files
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  • PDF 1.77 M
History
  • Receive Date: 06 July 2015
  • Revise Date: 27 May 2017
  • Accept Date: 04 June 2016
  • First Publish Date: 22 May 2017
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How to cite
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Statistics
  • Article View: 568
  • PDF Download: 391

APA

Nasri, M., & Modares, R. (2017). Investigating Low Flows trend Assessment in Isfahan Province. Journal of Range and Watershed Managment, 70(1), 247-256. doi: 10.22059/jrwm.2017.61981

MLA

Masud Nasri; Reza Modares. "Investigating Low Flows trend Assessment in Isfahan Province". Journal of Range and Watershed Managment, 70, 1, 2017, 247-256. doi: 10.22059/jrwm.2017.61981

HARVARD

Nasri, M., Modares, R. (2017). 'Investigating Low Flows trend Assessment in Isfahan Province', Journal of Range and Watershed Managment, 70(1), pp. 247-256. doi: 10.22059/jrwm.2017.61981

VANCOUVER

Nasri, M., Modares, R. Investigating Low Flows trend Assessment in Isfahan Province. Journal of Range and Watershed Managment, 2017; 70(1): 247-256. doi: 10.22059/jrwm.2017.61981

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