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Article

Hydroclimate Trend Analysis of Upper Awash Basin, Ethiopia

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Faculty of Civil and Environmental Engineering, Jimma Institute of Technology, Jimma University, Jimma P.O. Box 378, Ethiopia
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Department of Civil Engineering, College of Engineering and Technology, Nekemte Campus, Wollega University, Nekemte P.O Box 395, Ethiopia
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Faculty of Civil Engineering and Architecture, West Pomeranian University of Technology in Szczecin, 50 Piastów Ave., 70-311 Szczecin, Poland
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Author to whom correspondence should be addressed.
Academic Editor: David Post
Water 2021, 13(12), 1680; https://doi.org/10.3390/w13121680
Received: 13 May 2021 / Revised: 11 June 2021 / Accepted: 12 June 2021 / Published: 17 June 2021
The Awash River basin is classified into the upper basin, middle basin, and lower basin. The upper basin is the most irrigated and socio-economically important, wherein early and modern agriculture started. This study aimed to assess the upper basin’s hydroclimate variability under climate change from 1991 to 2015 following the county’s land-use policy change. Distinguished topographical settings, namely, lowland, midland, and highland, are used for upper Awash basin hydroclimate trend analysis. Lowland stations revealed a nonsignificant seasonal and annual increasing trend except for the Autumn season. Midland stations showed a decreased seasonal rainfall. Except for Sendafa, the increased station, the highland area exhibited an annual decreasing trend. The Awash-Hombole and Mojo main tributaries are used for the evaluation of basin streamflow. The Awash-Hombole main tributary resulted in annually growing trends during the summer season. Mojo main tributary resulted in a significantly decreasing trend during the spring, summer, and autumn seasons with a 99% level of significance. Therefore, following the basin’s topographic nature, the change of hydroclimatic elements, mainly of the rainfall and streamflow, is observed. Accordingly, its hydroclimate variated by 11 and 38% with precipitation and streamflow, respectively, from the mean value within the study time series. View Full-Text
Keywords: hydroclimate; upper awash basin; trend analysis; streamflow hydroclimate; upper awash basin; trend analysis; streamflow
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MDPI and ACS Style

Duguma, F.A.; Feyessa, F.F.; Demissie, T.A.; Januszkiewicz, K. Hydroclimate Trend Analysis of Upper Awash Basin, Ethiopia. Water 2021, 13, 1680. https://doi.org/10.3390/w13121680

AMA Style

Duguma FA, Feyessa FF, Demissie TA, Januszkiewicz K. Hydroclimate Trend Analysis of Upper Awash Basin, Ethiopia. Water. 2021; 13(12):1680. https://doi.org/10.3390/w13121680

Chicago/Turabian Style

Duguma, Fekadu A., Fekadu F. Feyessa, Tamene A. Demissie, and Krystyna Januszkiewicz. 2021. "Hydroclimate Trend Analysis of Upper Awash Basin, Ethiopia" Water 13, no. 12: 1680. https://doi.org/10.3390/w13121680

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