Determination of Value and Location of the Leakage in Water Distribution Networks Using Calibration (Case Study: The Water Distribution Network of Golbahar, Khorasan Razavi)

Document Type : Technical Note


1 MSc Student of Civil Engineering and Water Resources, Dept. of Civil Engineering, Faculty of Engineering, Birjand University, Birjand, Iran

2 Assist. Prof., Dept. of Civil Engineering, Faculty of Engineering, Birjand University, Birjand, Iran

3 MSc in Water Resources Engineering, Khorasan Razavi Water and Wastewater Co., Mashhad, Iran

4 MSc Student of Civil, Water and Hydraulic Structures, Dept. of Civil Engineering, Faculty of Engineering, Birjand University, Birjand, Iran


Nan-revenue water (NRW) is one of the most important problems in water distribution networks (WDN). A different method is presented for detection and reduction of NRW. In this paper demands is calibrated using ant colony optimization (ACO). The results show the value and location of NRW and big leakages positions. Then, NRW components in different zones are separated with combined MNFA and demand calibration. This method is applied on the WDN of Golbahar. This method has shown the value of background leakage, big leakage and apparent losses. The results showed that the main factor in NRW water loss is physical leakage and pipe fracture. Big leakage, background leakage and apparent losses are 57, 32 and 11 percent of NRW, respectively. Also, the big leaks are located in the zones 1, 5 and 7.


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