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Impact of Climate Change on Water Resources of Dokan Dam Watershed
Civil Engineering Department, Wasit University, Kut, Iraq.
Ministry of Water Resources, Kut, Iraq.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.ORCID iD: 0000-0002-6790-2653
2019 (English)In: Engineering, ISSN 1947-3931, E-ISSN 1947-394X, Vol. 11, no 8, p. 464-474Article in journal (Refereed) Published
Abstract [en]

Lesser Zab is one of the most important tributaries of Tigris River. During the last few decades, the streamflow significantly decreased for long periods followed by extensive flood in short periods. This study aimed to quantify the impact of climate change on streamflow at Dokan Dam until year 2050 using SWAT model based on the scenario of medium emission (A1B) and five climate projection models. SWAT run using Climate Forecasting System Reanalysis (CFSR) was used as weather input data then calibrated and validated on monthly time step for the period from 1980 to 2013 with Nash-Sutcliff Ef- ficiency (NSE) of 0.73 and determination coefficient (R2) 0.73 for calibration processes. The data of this period is more reliable. The result indicated to a significant decrease on the projected streamflow until year 2050 with average streamflow for the six climate models of 167 m3/sec in past compared with the observed streamflow of 176.5 m3/sec for the base period (1980-2013). In addition,  the  study  shows  that most runoffs come  from Iranian  part of  the Dokan Dam Watershed with 65% of total simulated runoff. It is highly recommended  to  improve  the  efficiency  of  water  using  for  current  and  future water projects to meet the expected water shortage.

Place, publisher, year, edition, pages
Scientific Research Publishing, 2019. Vol. 11, no 8, p. 464-474
Keywords [en]
Lesser Zab, Climate Change, SWAT, Watershed Modeling
National Category
Engineering and Technology Geotechnical Engineering
Research subject
Soil Mechanics
Identifiers
URN: urn:nbn:se:ltu:diva-75644DOI: 10.4236/eng.2019.118033OAI: oai:DiVA.org:ltu-75644DiVA, id: diva2:1344683
Available from: 2019-08-21 Created: 2019-08-21 Last updated: 2019-08-27Bibliographically approved

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