Design of gravity flow water supply network watergems: case study of Panchra Gram-Panchayat in Birbhum district, West Bengal

Abstract

The people of Panchra G.P under Khoyrasole block in Birbhum district are deprived of drinking water supply or receive very poor quantum of drinking water due to ground water of the habitations is found to be scarce and insufficient. Presently no piped water supply facility / sustainable drinking water supply system exists within the scheme jurisdiction & people of the area are using hand pump tube well as source of potable water most of which became dry during summer seasons. Water borne diseases like diarrhoea/ Amibiosis / typhoid etc. are common within the command area. To combat this situation, Public Health Engineering Directorate, under the Government of West Bengal has proposed a new piped water supply scheme for this area. It will be a sub-surface water scheme. Source of intake will be Ajay river. The Panchra Piped Water Supply Scheme covers 40 (Forty) nos. of habitations in 25 (Twenty Five) nos. of mouzas of Block Khoyrasole, P.S. Khoyrasole under Birbhum District in the state of West Bengal. The total area covered under the scheme is about 4642.054 hectare with a total population of 19957 as per 2011censusand average population density of 4.30 persons per hectare. WaterGEMS software has been used for design and analysis for the above mention water distribution network. WATERGEMS software developed by Bentley Systems, USA. As per the data received the inputs were done and accordingly the results were interpreted in graphical format. The whole network of service area consists about 459 pipes and 449 junctions. Hence detailed reports are represented in graphical form. Key Words: Hydraulic Parameters, junctions, pipes, Panchra G.P, WaterGEMS.