The objective of study was to model and analyze Warder town water supply distribution system of Warder town water supply, Somali region, Ethiopia. The WaterGEMs software was used to analyze a water distribution system, and determined the high and low pressure zones at junctions, as well as the velocity through the pipe. The result indicated, there were a total of 157 nodes existed in the the study area . From extended period and peak hour demand simulation 20.50% of nodes are below the minimum allowable pressures and 78. 50% nodes are in the permissible pressure ranges. Additionally, for off-peak hour demand, it was obtained that 27.45% of nodes in the distribution system were exposed to extremely high pressure (100 H2O) and 72.06% pressure obtained between 70 and 100 H2O. At low usage hours, no nodes get water at optimal pressure. In addition to this, flow velocity in each pipes was below 0. 6m/s which is lower than the recommended value. Therefore, to improve the hydraulic model and manage pressure could be increased by raising the reservoir elevation in the distribution system during off-peak hours, and velocity could be managed by reducing the pipes sizes. Key words: hydraulic performance, pressure, water distribution, warder town