Your search found 5 records
1 Shahid, B. A.; Shakir, A. S.; Bodla, M. A. 1996. Review of seepage losses from unlined and lined canals inside and outside Pakistan. Lahore, Pakistan: IWASRI. viii, 40p. (IWASRI publication no.167)
Seepage loss ; Estimation ; Measurement ; Irrigation canals ; Canal linings ; Hydraulics ; Mathematical models ; Water distribution ; Sedimentation / Pakistan
(Location: IWMI-HQ Call no: 631.7.1 G730 SHA Record No: H020037)
2 Asrar-ul-Haq; Shahid, B. A.; Shakir, A. S.. 1999. Improving drainage performance in Pakistan: Evaluation of past interventions and future strategies. In ICID, 17th Congress on Irrigation and Drainage, Granada, Spain, 1999: Water for Agriculture in the Next Millennium - Transactions, Vol.1E, Q.49: Rehabilitation and Modernization of Irrigation and Drainage Systems: 49.1: Criteria for the initiation of rehabilitation and/or modernization programs; Q.49.2: The involvement of private initiative; Q.49.3: Institutional framework. New Delhi, India: ICID. pp.61-73.
Drainage ; Performance evaluation ; Gravity flow ; Irrigation systems ; Irrigation canals ; Environmental effects ; Effluents ; Tube wells ; Waterlogging ; Control methods / Pakistan
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H025194)
3 Shakir, A. S.; Asrar-ul-Haq. 1999. Remodelling approach for large canals: A case study of Marala Ravi Link Canal, Pakistan. In ICID, 17th Congress on Irrigation and Drainage, Granada, Spain, 1999: Water for Agriculture in the Next Millennium - Transactions, Vol.1E, Q.49: Rehabilitation and Modernization of Irrigation and Drainage Systems: 49.1: Criteria for the initiation of rehabilitation and/or modernization programs; Q.49.2: The involvement of private initiative; Q.49.3: Institutional framework. New Delhi, India: ICID. pp.75-85.
Irrigation canals ; Design ; Sedimentation ; Maintenance ; Constraints / Pakistan / Indus Basin / Marala - Ravi Link Canal
(Location: IWMI-HQ Call no: ICID 631.7 G000 ICI Record No: H025195)
4 Ashraf, M.; Bhatti, Muhammad Tousif; Shakir, A. S.; Tahir, A. A.; Ahmad. A. 2015. Sediment control interventions and river flow dynamics: impact on sediment entry into the large canals. Environmental Earth Sciences, 74(7):5465-5474. [doi: https://doi.org/10.1007/s12665-015-4604-3]
Sedimentation ; Rivers ; Stream flow ; Monsoon climate ; Flooding ; Canal irrigation ; Water yield ; Flow discharge / India / Pakistan / Chenab River / Marala Ravi Link Canal / Upper Chenab Canal
(Location: IWMI HQ Call no: e-copy only Record No: H047101)
(0.77 MB)
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.
5 Ashraf, M.; Bhatti, Muhammad Tousif; Shakir, A. S.. 2016. River bank erosion and channel evolution in sand-bed braided reach of River Chenab: role of floods during different flow regimes. Arabian Journal of Geosciences, 9(2):1-10. [doi: https://doi.org/10.1007/s12517-015-2114-y]
Riverbank protection ; Erosion control ; Flooding ; Landsat ; Imagery ; Sand ; Open channels ; Monsoon climate ; Flow discharge ; Stream flow ; Environmental protection / Pakistan / Chenab River
(Location: IWMI HQ Call no: e-copy only Record No: H047488)
(5.03 MB)
Braided reaches of large rivers in alluvial plains show major morphological changes, particularly the external bank erosion, due to the flood events. This paper highlights the bank erosion and channel evolution induced by eleven different flood events in a 7-km long reach of the River Chenab, Pakistan. The impact of floods on river bank erosion and channel evolution is analyzed under low and high flow conditions. Flood-induced changes, for river’s external banks and channel evolution, were assessed by processing Landsat ETM+ images in ArcGIS tool, and their inter-relationship is evaluated through regression analysis. The results revealed that the major morphological changes were triggered by the flood events occurred during the high flow or Monsoon season (July–September), whereas the flood events of similar magnitude occurring during low flow season (October–March) did not induce such changes. Mostly, the erosion remained limited to the middle part of the reach,where the branch channel flows along the bank. The average annual bank erosion rates are much higher as compared with a global scale. Data analysis showed a strong correlation between the mean high flows and total bank erosion indicating that Monsoon seasonal flows and floods are responsible for bank erosion. The present study further identifies the river bank locations highly susceptible to erosion by developing the correlation between bank erosion and branch channel progression. Strong correlation for bank erosion could be established with the shift of branch channels position flowing along the banks in braided reaches of sand bed rivers. However, the presence of sand bars along the river banks resulted in reduced erosion that weakens this relationship. The findings of the present study can help develop better understanding about the bank erosion process and constitute a key element to inform and improve river bank management.
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