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REVIEW ON URBAN STORM WATER DRAINAGE SYTEM PERFORMANCE IN ETHIOPIA
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Journal of Hydrology: Regional Studies
dagnachew adugna
mulualem bekele
ibama brown
Yenagoa, capital city of Bayelsa State, lies in floodplain and surrounded by freshwater swamp and tributaries of the Nun River, Ekole and Epie Creeks, lakes and other natural drainage paths. But the City is annually inundated most times of the year. The goal of this research is to assess and recommend an effective storm water management system in the city. Objectives of the study include: assessing the challenges posed by storm water, identify climatic and hydrological settings of the study area, (c) develop an effective management strategy to mitigate the problem. Multi-stage sampling procedure was adopted and purposively select 6 communities from 22 identified communities, 95 questionnaires were administered. Spearman Rank Correlation was used to test the relationship between adequacy of drains and annual flooding incidence. The study found that; extensive uncontrolled development on wetlands fuelled rapid urbanisation, lack of drainage in many communities and the major roads in t...
Assefa M Melesse, Ph. D, P.E., D. WRE (Professor)
assmamaw assefa
Citation: Dibaba, W.T., 2018. A review of sustainability of urban drainage system: traits and consequences. Journal of Sedimentary Environments, 3 (3): 131-137. Abstract The negative effect of domestic effluents on the quantity and quality of water and urban amenities makes increasingly imperative to establish sustainable drainage systems in cities. Therefore, for a better plan and sustainable development of a town, it is highly imperative for environmentalists, hydrologists, land use planners and for storm and wastewater management to analyze the existing drainage system and predict the environmental responses to the discharges of urban drainage system. This study has analyzed the existing drainage system of Jimma city (Ethiopia) and identified the major factors contributing to the poor drainage performance. Jimma population growth has been increasing the problems caused by the uncontrolled release of domestic effluents and urban solid waste, with increasingly damaging consequences for the environmental quality, social wellness and economy of the city. With the intensification of Jimma development, surface water discharges from developed areas and uncontrolled wastes are being increasingly released, affecting social, environmental and economic state of the city. Lack of proper functioning drainage infrastructure, uncontrolled waste disposal, lack of periodic inspection and maintenance, poor connection of drainage networks and roads and carelessness led to the failure of the existing drainage system. These conditions caused drainage blockages, resulting in overflows and floods, leading to less and less attractive conditions in the city and making some places unfit to be inhabited.
Wolfgang Geiger
Getaneh Hailu
LAUTECH Journal of Civil and Environmental Studies
SOLOMON OLAKUNLE BILEWU
The study assesses the performance of the existing drainage facilities in some selected areas in Ilorin Metropolis of Kwara State, Nigeria. The rapid increase in urbanization, increase in population without corresponding infrastructures in the city of Ilorin have led to the increased incidence of flood as the available drainage channel cannot convey the volume of water. The study focuses on the household demograph, flooding, drainage maintenance and solid waste management strategies employed in the study areas. The methodology involves the use of questionnaires and interview method to gather information from the respondents of the study areas. The study was carried out with 200 copies of well-designed questionnaire through systematic random sampling technique in the administration. The research questions were answered using tables of frequencies and percentages, bar chat, pie chart and regression analysis for flood modelling and prediction of flood occurrence. The analysis revealed ...
Environment and Urbanization
Jonathan Parkinson
afrida helen
The objectives of this paper are to assess the quality of artificial drainage facilities in residential premises of Enugu city and proffer appropriate renewal strategies for managing them. An appraisal technique, which employs a checklist of seven simple classifications of specified qualities, is utilized to achieve the aim. In this approach percentage penalty points (Pp) are assigned to drainage facilities having observable defects. A total of 366 drains in 20 residential areas of the city are appraised. The poorest condition of drainage system is observed in Ogui Urban area with the highest penalty points of 88% followed by Abakpa with 87.5% penalty. Only three layouts (Ekulu, G.R.A., and Independence Layout) have less than 25% penalty points rated as good condition of drainage. None of the residential areas in the city has excellent drainage facilities as none scored less than 10% penalty. A more integrative legislation on urban land use planning and management to protect the dra...
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RESEARCH PAPER. 131. A REVIEW OF SUSTAINABILITY OF URBAN DRAINAGE SYSTEM: TRAITS AND. CONSEQUENCES. W AKJIRA T AKALA D IBABA *. Jimma University, Faculty of Civil and Environmental Enginee ring ...
1.1.2. Challenges to Conventional Drainage Systems Conventional drainage systems are designed to collect and transport water runoff from urban areas as quickly as possible via sewer networks and water treatment facilities to nearby receiving water bodies [1,11]. The main goal is to manage water volume in order to avoid urban flooding in city areas.
ed out to review various research works carried out by researchers on. the effects of poor dra. i. nage on road pavement. Poor drainage causes early pavement distresses. leading to driving ...
Reliability, resilience and sustainability are key goals of any urban drainage system. However, only a few studies have recently focused on measuring, operationalizing and comparing such concepts in a world of deep uncertainty. In this study, these key concepts are defined and quantified for a number of gray, green and hybrid strategies, aimed at improving the capacity issues of an existing ...
View PDF; Download full issue ... Volume 23, August 2021, 100601. Evaluation of an urban drainage system and its resilience using remote sensing and GIS. Author ... to extreme climatic events or poor maintenance of the drainage networks urge for assessing the performance of the urban drainage system (UDS). This paper presents a comprehensive ...
Indonesia Journal of Engineering and Education Technology (IJEET) Volume 2 Nomor 2, April 2024, p:297-303 E-ISSN: 3026-7544 Meta-analysis is an analytical technique that is very important in ...
Industry Research and Information Association (Ciria) Manual (first edition: Woods-Ballard et al, 2007; second edition: 2015). SuDS is the term used throughout this paper to describe urban drainage systems that deal with surface water as alternatives to traditional piped drainage, examples of which
This aim of this research is to propose a design of sustainable road drainage system, in means of three facilities (side channel, filter layer and infiltration well), to overcome especially water inundation problem that is suitable for Indonesia condition. This paper is a documentation of the proposed of experimental model of a design of ...
Drainage Network, Computation of Peak Discharge,a nd Design of Stormwater Drainage System. In this study, EPA-SWMM Software is used to build a Hydraulic and Hydrologic Model to analyze the existing drainage system and re -design the stormwater drains to safely discharge flood water without causing inundation in low-lying areas.
To minimize soil losses and to protect the hillslopes, different technical solutions can be applied. 42 The selection of these solutions depends mainly on the economic resources available and the morphological, geological, and climatological conditions of the area. The most common technical solutions in Spain are concrete piles or screens with metal bolts, breakwater walls, concrete or gabion ...
3.1.2. Drainage systems of Dhaka city 27 3.1.3. Location of the study area 28 3.1.4. Drainage system within the study area 29 4. Research Methodology 31 4.1. General 31 4.2. Quantification of uncertain parameters 33 4.3. Hydraulic Model set up (SWMM5) 33 4.3.1. Description of sewer network in the study area 34 4.4. Sensitivity Analysis 35
The capacities of the existing drainage channels should be rehabilitated, improved and recovered by dredging/declogging, remedial or related works and additional facilities. The volume of bottom deposits of drainage channels to be dredged and declogged is estimated to be 840,000 m³ in esteros/creeks and 80,000 m³ in drainage mains/outfalls ...
Sustainable drainage systems (SuDS) can be a key tool in the management of extremes of rainfall, due to their capacity to attenuate and treat surface water. Yet, implementation is a complex ...
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Finally, 78 papers were selected for the literature review. Irrigation and Drainage 3.2. Overview of selected papers A general Analysis was made on the selected 86 papers to find out the research interest on the storm water drainage and flood with the selected time span (Figure1) and to find out the
In order to clarify many points in this paper, the follOWing definitions and explanations are presented: 1) Drainage basin/subbasin - Acommunity can be divided into major drainage basins ranging from 10 to 100 square miles. These major basins are composed of individual drainage subbasins ranging from 1 to 5 square miles as illustrated in Figure ...
1. Introduction. Sewer and drainage system management and maintenance are the most critical urban challenges worldwide, especially in subSaharan Africa (Yazdanfar & Sharma, Citation 2015).The sewer and drainage systems must be carefully operated and preserved in a rational, and sustainable manner because it is a vital aspect of the urban water infrastructure (Mohammadreza Malek Mohammadi et al ...
Generally, a drainage system can be divided into the field drainage system, main drainage system, and outlet [4]. The purpose of the field drainage system is to control waterlogging and/or water ...
The drainage system must be designed so that the 10-year return-period event does not cause overflow; i.e. the 10-year return-period flood protection standard. If the drainage system fails to convey water by gravity, construction of a pumping station or flood diversion works is required to protect villagers.
DRAINAGE SYSTEMS DESIGN. Jeffrey Beloy. Drainage plays a relevant and important consideration in planning roads and building structures to avoid damage due to runoff, in other words, to avert the accumulation of water on the surface that can lead to flooding. As a fundamental principle, drainage has to be designed properly to efficiently and ...
This paper presents a critical review on stormwater drainage and urban flood based on 78 selected journal papers published over the period of 1990 to 2018. The review focus on pluvial flooding to ...
Specifically study seeks: To review the basic concept of drainage systems. To review the freely available in formation on performances of drainage systems in Ethiopia. To conclude the storm water drainage performance status in the Ethiopia. 1.3 SCOPE OF THE STUDY The scope of this study was limited to freely available research journal article ...
The methodology consisted of four steps: (1) obtaining the design hyetograph, (2) defining the road geometry as a digital terrain model, (3) setting parameter acceptance. criteria, and (4 ...