American Society of Civil Engineers


Impact of Irrigation Management Changes on Lower Chenab Canal System


by M. Sulman, (Postgraduate Student, Civil Engineering, University of Engineering and Technology Lahore and Assistant Director, PMIU, Punjab Irrigation and Power Department, Lahore) and M. Ashiq, Ph.D., P.Eng., (Professor, Department of Civil Engineering, University of Engineering and Technology Lahore. E-mail: raviuet@yahoo.com)
Section: Irrigation and Drainage Council, pp. 2121-2131, (doi:  http://dx.doi.org/10.1061/41114(371)220)

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Document type: Conference Proceeding Paper
Part of: World Environmental and Water Resources Congress 2010: Challenges of Change
Abstract: To resolve problems like inadequate maintenance of water conveyance conduits (irrigation channels) and associated hydraulic structures, unauthorized usage of water, and inequitable distribution of water, the Irrigation and Power (I&P) Department of Punjab Government handed over the Lower Chenab Canal System (East Circle), having 119 distributaries with total canal command area of 1.85 million acres, to Farmers Organizations (FOs) as a pilot project. To study the effects of this irrigation management transfer (IMT) on the Lower Chenab Canal System, this study was designed. To investigate the IMT impacts, the daily head and tail discharge data from 2006 to 2009 were collected from the Project Monitoring and Implementation Unit (PMIU) of the Irrigation & Power Department. Based on this data the Delivery Performance Ratio (DPR), Capacity Factor (CF) and status of supply at tails of channels were determined. Besides that, assessment of impact of supplies at the tails after IMT was made. Relative DPRs for crop seasons of Kharif 2006, Rabi 2006—2007, Kharif 2007, Rabi 2007—2008 and Kharif 2008 were computed as of 0.72, 0.68, 0.87, 0.86 and 0.76 respectively. Results showed that there was an increase in supply at the channels tail during Kharif 2007 and Rabi 2007—2008. The analysis showed that the percentage of tails, in term of average number of channels, which remained dry during Kharif 2006, Kharif 2007, Kharif 2008 and Kharif 2009 season were 18%, 12%, 16% and 5.7% respectively; despite the fact that channels run as per authorized head discharge. The data of Abiana (water revenue) collection for different seasons were collected and impact of IMT on the Abiana collection and assessment was investigated. A general trend of decline in revenue collection was noticed. This study would be helpful for the understanding of the reforms process and to make the improvements in the management system. It would provide findings how to improve the method of Abiana assessment and collection and to enhance the equitable distribution of supply at the tails of the channels.


ASCE Subject Headings:
Irrigation
Canals