Urban Storm Water Drainage Management System And It Challenges (The Case Of Bishoftu), Ethiopia

Abstract

Ethiopia's Rapid Urbanization, Which Is Exacerbated By Global Climate Change, Is Causing Major Challenges For Major Cities, Such As Increased Storm Runoff And Flooding. Runoff Coefficients Are Higher In Urban Areas Than In Rural Areas, Where Vegetation Cover And Agricultural Land Help To Absorb Or Infiltrate Rainfall, Reducing Storm Runoff. However, In Urban Areas, Paved Surfaces And Built-Up Areas Increase Storm Runoff, Reducing Infiltration Rates (Berndtsson Et Al., 2019). The Main Aim Of This Research Is To Investigate The Current Storm Water Management System And Its Challenges In Bishoftu Town. In Order To Achieve The Objective Exploratory Mixed Research Design And Descriptive Research Types That Involved Both Quantitative And Qualitative Analysis Were Developed. A Questionnaire Was Conducted To Households Chosen From The Site Using A Random Sampling Technique. Supplementary Data Was Also Gathered Through Selected Key Informant Interviews, Field Observation, And By Consulting Secondary Data Sources. And Data Were Analyzed By Using Arc Cad, Auto Cad & Excel Software Are Used . Based On The Result Of The Study, Most Of The Drainage Ditches Are Filled With Solid Waste And Sewerage Resulting In Formation Of Sewage Ponds In The Channel As Well As On The Road. Result Of The Study Revealed That The Majority Of The Road In The Study Area Are Deteriorated And Degraded Occurred Due To The Absence Of Adequate Urban Storm Water Drainage Infrastructure That Discharges The Flood Generated Safely In To The Final Receiving Systems. Likewise, The Major Provision Challenges Of The Storm Water Management System Are Topography And Geological Formation, Inadequate Coverage Of Drainage Lines, Inappropriately Designed Drainage Structures, Disposal Of Solid Waste Into Natural Waterways And Drainage Facilities, Low Community Participation And Others. These Practices Decrease Environmental Degradation. Furthermore, Results Obtained From Field Observation Indicated That Very Serious Environmental Degradation Due To The Inadequacies Of Drainage Along Most Streets, Lack Of Green Space, And The Result Of Poor Storm Water Management. Therefore, The Recommendations Of The Study Are; The Municipality Should Applying Sustainable Urban Storm Water Management Proposed Strategies Through Inviting Different Stakeholders To Create Awareness And Technically Support The Community In How They Start Storm Water Management Practice. This Study Also Strongly Recommends The Implementation Of The Planned And Designed Urban Drainage. The Use Of Porous Structures Like Grassing On Compounds And Road Sides Instead Of Pavements Will Contribute Valuable Advantages Towards The Sustainable Urban Drainage Management.