Role of Sediment Transport in Operation and Maintenance of Supply and Demand Based Irrigation Canals: Application to Machai Maira Branch Canals

Munir, Sarfraz

doi:10.1201/b11604

Cited by 26 publications

(36 citation statements)

References 31 publications

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“…The development of modern irrigation in Indo-Pakistan started in 1859 that grew up to become the world's largest contiguous gravity flow irrigation system, which is known as the Indus Basin Irrigation System (Munir 2011). The Indus Basin Irrigation System (IBIS) irrigates an area of about 16 million ha that contributes around 90 % of total food production of the country (Rizvi et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Sediment control interventions and river flow dynamics: impact on sediment entry into the large canals

et al. 2015

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At Marala barrage, two canals, i.e. Marala Ravi Link Canal (MRLC) and Upper Chenab Canal (UCC) off-take from left side of the River Chenab. MRLC has a very old history of experiencing sedimentation issues. Several attempts have been made to counterfoil or minimize this problem in the recent past. Two remarkable measures are the remodeling of MRLC in 2000-2001 (in-tervention-1) and the shifting of the confluence point of a heavily sediment-laden upstream tributary of the Chenab River by construction of a spur dike in 2004 (intervention-2). This paper investigates the effectiveness of these structural interventions as sedimentation control measures. The baseline period is selected from 1997 to 2000 and the impact is analyzed for two post-intervention time steps, i.e. evaluation period-1 ranging from 2001 to 2004 and evaluation period-2 from 2005 to 2011. Results obtained from double mass analysis revealed that sediment load increased by 33 and 8 % due to intervention-1, while decreased by 12 and 22 % due to intervention-2 in MRLC and UCC, respectively. The results suggest that monsoon floods are mainly responsible for sediment loading in the canals (66 % for UCC and 73 % for MRLC), supported by the finding that effective discharge (1900 m3 s-1) is almost twice the mean annual river discharge. The discharge classes between 900 and 2900 m3 s- 1 are mainly responsible for major proportion (89 % in MRLC and 86 % in UCC) of the total sediment load over the 15-year study period. The intervention-1 could not minimize the sediment entry into the canals; rather it aggravated the situation. The intervention-2, however, proved a useful structural measure in this regard

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Section: Introductionmentioning

confidence: 99%

Sediment control interventions and river flow dynamics: impact on sediment entry into the large canals

et al. 2015

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“…Paudel () continued the previous study and found that it is possible to reduce the sediment deposition problem by proper design and management of the system. Munir () in his study in Pakistan found that sediment deposition during low crop water requirement periods can be re‐entrained during peak water requirement periods by adjusting the operation. Most of these studies simulated the sediment transport of coarser grain sizes.…”

Section: Introductionmentioning

confidence: 99%

Effects of different operation scenarios on sedimentation in irrigation canals of the Gezira Scheme, Sudan

et al. 2016

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Sediment and water management are key issues in irrigation schemes that suffer from accumulation of sediment along canals. This accumulation creates problems with adequate water supply and may lead to water shortage. The aim of this study was to analyse improvement options for operation and maintenance in order to achieve better sediment and water management in irrigation canals. A model has been developed to simulate cohesive sediment transport in irrigation canals. The model is a useful tool to predict cohesive sediment deposition under different operation and maintenance scenarios. It has been calibrated and validated by using field data of the Gezira Scheme in Sudan and has been applied for different options of operation. The best operation scenario was found when the scheme was operated based on the crop water requirement during the period of high sediment concentration. When the inflow was reduced by 51% during this period in 2011, the reduction in deposition was 48%. Such types of adaptation will significantly reduce deposition and improve sediment and water management in irrigation canals. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Thus, sedimentation in canals can cause problems of undersupply, unfairness and an inevitable decline in the irrigated area, affecting production and farmers' satisfaction (Paudel, 2010;Munir, 2011). Raised canal bed levels may lead to raised water levels upstream of the canal so that fields upstream get more water than their quota and downstream fields get less.…”

Section: Introductionmentioning

confidence: 99%

The use of Delft3D for Irrigation Systems Simulations

Theol

Jagers

Suryadi

et al. 2019

Irrigation and Drainage

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Irrigation systems performance and sustainability are affected by sediment deposition. Cohesive sediment (suspended load) is an important problem in irrigation canals and its behaviour is significantly different from that of non‐cohesive sediment (bed load). Most studies on sedimentation in irrigation systems deal with non‐cohesive sediment. Studies on cohesive sediments are mostly done in rivers and estuaries, but not in irrigation canals. The few existing studies on cohesive sediment in irrigation canals are limited by their use of 1D models. Therefore, in this study we test whether an existing 3D model that was designed for rivers and estuaries can be used in irrigation canals. Delft3D was identified as a suitable model. Simulations were done for different sizes and configurations of the irrigation network. After some adaptations to the model, the simulations of different scenarios provided promising results. From a hydrodynamic and morphological point of view the Delft3D model was able to realistically represent water and sediment flows in a hypothetical canal set‐up, consisting of a main canal, a branch canal and several hydraulic structures. Some challenges remain in the use of Delft3D for irrigation canals, in particular regarding wall roughness in small rectangular canals and computation times for complex systems. However, these challenges are not insurmountable and the advantages of using Delft3D are clearly shown in this paper. © 2019 John Wiley & Sons, Ltd.

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Role of Sediment Transport in Operation and Maintenance of Supply and Demand Based Irrigation Canals: Application to Machai Maira Branch Canals

Cited by 26 publications

References 31 publications

Sediment control interventions and river flow dynamics: impact on sediment entry into the large canals

Sediment control interventions and river flow dynamics: impact on sediment entry into the large canals

Effects of different operation scenarios on sedimentation in irrigation canals of the Gezira Scheme, Sudan

The use of Delft3D for Irrigation Systems Simulations

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