Design of Hydraulically Balanced Water Distribution Network Based on GIS and EPANET for Kalapatti, Coimbatore

Document Type : Primary Research paper


1 PG Student, Department of civil engineering, PSG College of Technology Coimbatore, India.

2 Assistant Professor, Department of civil engineering, PSG College of Technology Coimbatore, India.


The Water distribution system serves many purposes in addition to the provision of water for the human consumption and hence it is a necessary component in the development of an area. Due to urbanization, the population of cities is increasing drastically, and hence the distribution system should be designed in such a way that it should satisfy the consumers demand at adequate pressure. Analysis of water distribution system involves determining quantities of flow, head losses in various pipe sections and the resulting residual pressure. The study area chosen for the project is Kalapatti of Coimbatore district. The prime source of water supply to the region is from Athikadavu. The present distribution system consists of 7 overhead tanks that are inefficient to meet the future demands. The topographic map of the study area was extracted from Google earth. The network is created based on the road pattern. The network model for the determined region is created by using polyline theme in AutoCAD. The network from the AutoCAD is imported into the EPACAD, and the input for the EPANET is generated. The network from the EPACAD is imported into the EPANET by using the input file tool. The manual calculation is carried out for determining the effective size of the pipes using Hazen-Williams formula. The demand at each nodal point is calculated from population data collected and per capita demand. Elevation and demand as a nodal input and pipe sizes and length as a link input, hydraulic simulation of the model is carried out using EPANET software. The results from the EPANET show that the pressure at each node is within the limits.