Mengiste, Yenesew(PhD)Alemu, Habtamu2018-07-232023-11-112018-07-232023-11-112017-06http://etd.aau.edu.et/handle/12345678/9741Roads are among the basic infrastructures such that drainage structures provided by the sides of roads should be well designed and constructed to the standard and managed properly such that the road serve the intended purposes. The major intention of an urban storm water management system is to guarantee storm water generated from developed catchments causes least nuisance, danger and damage to people, property and the environment. The general objective of this study is to investigate the storm drainage problem of Zenebewerk (located in West Addis Ababa, Ethiopia) and forward problem identification approach with recommendation of possible engineering remedial measures which can be applicable to similar problems in the city. The study area frequently gets flooded with small rain fall intensity and results in traffic congestion, asphalt erosion and inconvenience on the day to day socio economic activity of the society. Primary and secondary data were collected, analyzed and presented using Microsoft-excel, AutoCAD, ArcGIS, tables, graphs and percentages. The catchment that contribute flow was delineated and stream network in the catchment was generated using DEM and the delineation made more precise by field survey. Frequency analysis of rainfall computed using Gumbel and log Pearson Type III probability distribution functions and the later found to fit the actual data using goodness of fit test. Intensity duration curve developed to help analyze rain fall and the consequent peak runoff for different return periods using rational method. Dimensions of the existing drainage structures are checked as a problem identification approach for confirming capacity of the existing drainage structures. The main causes of flooding were found to be surface flows from the study catchment area are not collected and disposed properly; most of the inlets by the sides of the road closed by sediments; cross slopes of the asphalt road are not proper such that asphalt sheet flow does not escape to inlets; and big runoff from neighboring catchment forced to flow upward and discharged over the asphalt. Therefore, for the road to serve the purpose effectively, all the structures including drainage structures provided by the sides of the roads should be well designed and constructed to the standard and managed properly.enRoads are amongThesis