Investigating Low Flows trend  Assessment in Isfahan Province

Nasri, Masud; Modares, Reza

doi:10.22059/jrwm.2017.61981

Document Type : Research Paper

Authors

https://doi.org/10.22059/jrwm.2017.61981

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

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.

[2] Birsan, MV., Molnar, P., Burlando, P. and Pfaundler, M. (2005). Stream flow trends in Switzerland. Journal of Hydrology, 312–329.

[3] Caruso, BS. (2002). Temporal and spatial patterns of extreme low flows and effects on stream ecosystems in Otago, New Zealand. Journal of Hydrology, 115–133.

[4] Douglas, EM., Vogel, RM. and Kroll, CN.(2000). Trends in floods and low flows in the United States: impact of spatial correlation. Journal of Hydrology, 90–105.

[5] Eslamian, S.S., Zareei, A. And Abrisham chi, A. (2004). nataurl resources and agricultural sciences technology, water and soil 1(27), 27-38.

[6] Eslamian, S.S., Ghasemi, M. And Soltanigard, S. (2012). Computation and Regionalization of Low Flow Indices and Determination of Hydrological Drought Durations in Karkhe Watershed. J. Sci. & Technol. Agric. & Natur. Resour., Water and Soil Sci., 16(59),1-14.

[7] Fiala, T., Ouarda, TBMJ. and Hladný, J. (2010). Evolution of low flows in the Czech Republic. Journal of hydrology, 206–218.

[8] Kahya, E. and Kalaycı, S. (2004). Trend analysis of streamflow in Turkey. Journal of Hydrology, 128–144.

[9] Khaliq, MN., Ouarda, T. and Gachon, P. (2009). Identification of temporal trends in annual and seasonal low flows occurring in Canadian rivers: The effect of short-and long-term persistence. Journal of hydrology, 183–197.

[10] Korhonen, J. and Kuusisto, E. (2010). Long-term changes in the discharge regime in Finland. Hydrology Research, 253-268.

[11] Laaha, G. and Blöschl, G. (2007). A national low flow estimation procedure for Austria. Hydrological Sciences Journal. 52, 625-644.

[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.

[14] Novotny, EV. and Stefan, HG. (2007). Streamflow in Minnesota: Indicator of climate change. Journal of Hydrology, 319–333.

[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.

[16] Zehtabian, Gh. and Mosavi, A.A. (2000). Investigation and determination of hydrologic indices by the aid of analogus watersheds (case study: Salt lake drainage basin), Biaban, 5(2), 65-78.

Journal of Range and Watershed Managment

Investigating Low Flows trend Assessment in Isfahan Province

References

References

Volume 70, Issue 1
June 2017
Pages 247-256

Investigating Low Flows trend Assessment in Isfahan Province

References

References

Volume 70, Issue 1June 2017Pages 247-256

Volume 70, Issue 1
June 2017
Pages 247-256