caa a22 4500 445837942 CHVBK 20180317145335.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s00271-010-0222-8 doi (NATIONALLICENCE)springer-10.1007/s00271-010-0222-8 Flexibility analysis of irrigation outlet structures using simulation of irrigation canal hydrodynamic model [Elektronische Daten] [Javaid Tariq, Muhammad Latif] The Upper Swat Canal (USC) System became operational in 1917-1918 in North West Frontier Province (NWFP) of Pakistan. The rehabilitation and modernization of the USC was undertaken with a view to overcoming the shortage of water supplies for irrigation. The water allowance was enhanced from 0.39 to 0.77Ls−1ha−1 in the study area. Recently, the operation and management of a secondary canal or ‘distributary' was transferred to the Farmers Organization (FO). This distributary named ‘Chowki' offtakes from the Maira Branch of the USC. The cultivable command area (CCA) of this distributary is 4,306ha and it serves 1,485 beneficiaries. A management committee on Chowki Distributary was formed in 2003. This distributary consists of one main and two minor channels having twenty-eight direct outlets. The Simulation of Irrigation Canal (SIC) hydrodynamic model was used to evaluate the flexibility of Chowki Distributary. The model was calibrated at 100, 80 and 70% of the design discharge (Q d) and it was validated at 90, 85 and 60% of the design discharge. The observed and simulated water levels were in close agreement with each other for the calibration and validation periods. The statistical analysis and paired t-test indicate that the model results are not statistically different from the measured values at 1% significance level. The simulated results of the SIC model were applied to studying flexibility of the outlet structures along the Chowki Distributary. The flexibility analysis demonstrates that poor performance is inbuilt into the system due to inadequate control over the accuracy of the crest setting during the construction of the outlets. Springer-Verlag, 2010 Tariq Javaid Department of Water Management, Khyber Pakhtunkhwa Agricultural University, Peshawar, Pakistan aut Latif Muhammad Center of Excellence in Water Resources Engineering, University of Engineering and Technology, G. T. Road, 54890, Lahore, Pakistan aut Irrigation Science Springer-Verlag 29/2(2011-03-01), 127-134 0342-7188 29:2<127 2011 29 271 https://doi.org/10.1007/s00271-010-0222-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00271-010-0222-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tariq Javaid Department of Water Management, Khyber Pakhtunkhwa Agricultural University, Peshawar, Pakistan aut NATIONALLICENCE 700 1- Latif Muhammad Center of Excellence in Water Resources Engineering, University of Engineering and Technology, G. T. Road, 54890, Lahore, Pakistan aut NATIONALLICENCE 773 0- Irrigation Science Springer-Verlag 29/2(2011-03-01), 127-134 0342-7188 29:2<127 2011 29 271 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer