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ISSN: 2321-9939 | ESTD Year: 2013

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Paper Title
Flood Mitigation of Goro Catchment in DireDawa
  Wahaj Ahmad Khan,  Mikiyas Demissie

Flood hazard has long history in Dire Dawa which is surrounded by the catchment of highland as well as low land. The city has been repeatedly devastated by flood disasters in the past. The main objective of the project is to estimate the peak Runoff and to asses flood mitigation measure. To achieve this objective, different prevention methods are used by using structural and non-structural approaches. Arc GIS 9.2 software is used to get soil type and land use, SCS curve number to get maximum run off, sieve analyses to know the grading characteristics of soil. It is concluded that the majority of soil particle are well graded, however there is also an indication of poorly graded soil. There is an effect of erosion and scouring. The monthly rainfall data analysis shows that, during the last 66 years from 1952 to 2017, the maximum values of monthly rainfall is calculated as 271.9 mm and the mean average value as 92.1mm. An increase in rainfall intensity, in association with other factors such as land-use change, increased population settlement along the river bank in the downstream area have contributed to raise the risk level of flash floods .The peak flood runoff as well average runoff has been estimated using soil conservation curve number method. The average value and peak value of runoff are 9.94 mm and 33.9 mm respectively. In addition to this, the maximum runoff is found on cambisols soils. Finally out of different types of river training structures, construction of groyne and retaining wall are selected for controlling and regulating the river bed configuration for effective and safe movement of floods and river sediments.

Keywords- Soil Conservation Service; Curve Number; Antecedent Moisture Condition; coefficient of curvature
Publication Details
Unique Identification Number - IJEDR2104024
Page Number(s) - 133-142
Pubished in - Volume 9 | Issue 4 | December 2021
DOI (Digital Object Identifier) -   
Publisher - IJEDR (ISSN - 2321-9939)
Cite this Article
  Wahaj Ahmad Khan,  Mikiyas Demissie,   "Flood Mitigation of Goro Catchment in DireDawa", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Volume.9, Issue 4, pp.133-142, December 2021, Available at :http://www.ijedr.org/papers/IJEDR2104024.pdf
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