IJSTR >> Volume 9 - Issue 9, September 2020 Edition

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AUTHOR(S)

Birhanu Haile Gedamu, Vijaykumar Nagappa

KEYWORDS

HEC-RAS, Rainfall, Flood, Bridge, River.

ABSTRACT

The main purpose of this study is to investigate the geomorphological data, soil properties and land use for the bridge and based on the field observation and analysis, to know the rainfall intensity and to obtaining different return period of flood magnitudes and catchment area for the Mechela river for the determination of required sizes of opening for the waterway at various watercourses and design parameters of bridge. The study area is located in South Wollo Ethiopia which connects main leg Ambo Woreda rural village with Weynamba Leghida. Study area is full of flat terrain, the elevation of the Mechela river bridge project varies from 1800m to 3000m above mean sea level. The mean annual rainfall of the study area ranges between 400mm-799mm. The study results are analytically manipulated by hydraulic Model HEC-RAS (Version-4) software and GIS Software’s like ArcGIS.

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