Water Resource Engineering

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Browsing Water Resource Engineering by Author "Bogale, Benyam"

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    Assessment of the Water Distribution Network of Metu Town Water Supply System, Ethiopia
    (Addis Ababa University, 2016-11) Bogale, Benyam; Sahilu, Geremew (PhD)
    Intermittent water distribution is the key problems of many water authorities in developing countries including Ethiopia. Hence, this research was conducted to carry out the assessment of the water distribution network of Metu town existing water supply system which is located in western Oromia region of Ethiopia. To examine the hydraulic performance of the water distribution network, water CAD modeling was adopted. Accordingly, different reviewed reports, percentage of Non-Revenue for water, and discussions with water service personnel were conducted to analyze water losses and leakage management practice in the town. As per the analyzed results; the current maximum water demand in Metu town is estimated at 4,206.93 m3/day, while small reservoirs capacity and low pump efficiency were observed in the town water distribution networks. According to simulated results; the maximum of 203.68m and 199.49m, and minimum of 5.36m and 2.97m water pressure head were examined in the transmission and distribution main, respectively. Further, the analyzed water losses result in Metu town indicates that about 34.64% of production is Non-Revenue Water. Thereby, apparent losses cover 21.12% of total loss and 13.52 % were physical losses. Accordingly, for the case of Metu town apparent losses are more significant, however physical losses contributed considerable volume of lost. In general, rising in water demand, small capacities of existing infrastructures and large volume of water loss were leads to intermittent water distribution in Metu. Hence, most of residences were not satisfied on the town water service. Therefore, it is significant to rehabilitate and improve the water distribution system capacities and providing more attention to water losses reduction policies and strategies are vital for remedial measures. KEY WORD: water distribution network, hydraulic water CAD modeling, water loss, leakage management, Metu town, Oromia region, Ethiopia.