International Journal of
Water Resources and Environmental Engineering

  • Abbreviation: Int. J. Water Res. Environ. Eng.
  • Language: English
  • ISSN: 2141-6613
  • DOI: 10.5897/IJWREE
  • Start Year: 2009
  • Published Articles: 315

Full Length Research Paper

Wet and dry spell analysis for decision making in agricultural water management in the eastern part of Ethiopia, West Haraghe

Konjit Sifer
  • Konjit Sifer
  • Haramaya University, P. O. Box 138, Dire Dawa, Ethiopia.
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Fitsume Yemenu
  • Fitsume Yemenu
  • Ethiopian Institute of Agricultural Research, Debre Zeit Research Center, P. O. Box 32, Debre Zeit, Ethiopia.
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Asfaw Kebede
  • Asfaw Kebede
  • Haramaya University, P. O. Box 138, Dire Dawa, Ethiopia.
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Shoeb Quarshi
  • Shoeb Quarshi
  • Haramaya University, P. O. Box 138, Dire Dawa, Ethiopia.
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  •  Received: 31 March 2016
  •  Accepted: 04 July 2016
  •  Published: 31 August 2016

Abstract

The objective this study was to analyze the dry and wet spell of the main and small rainy season in the eastern part of Ethiopia, West Haraghe. Markov Chain model was employed to investigate the extent and characteristics of the dry and wet spell in the study sites. Accordingly, the results exhibited that the chance of having wet dekades is relatively higher (greater than 50% of probability of occurrences) during last of June to the start of October for all the study locations (Hirna, Asebe Teferi and Meios). The probability of having wet after wet is also fairly enough that farmers can take significant agricultural operations, like planting during the start of the season, second dekade of June. The probability of having wet during belg is however very low (usually less than 40%). But the soil moisture from the season could help farmers start plough earlier so that farmers can have the full advantage of the main rainy season, without wasting moisture for other activities.

 

Key words: dry, probability, Markov chain, probability, spell