Author(s):
1. Nausheen Mazhar:
Department of Geography, Lahore College for Women University,Lahore,Pakistan
2. Ali Iqtadar Mirza:
Department of Geography, Government College University,Lahore,Pakistan
3. Zayanah Sohail Butt:
Department of Geography, Lahore College for Women University,Lahore,Pakistan
4. Muhammad Nawaz:
Department of Geography, National University of, Singapore
5. Muhammad Ameer Nawaz Akram:
State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing (LIESMARS), Wuhan University,China
Abstract:
Tarbela dam, with the main functions of hydropower (3,750 MW installed capacity) and irrigation, is being threatened by the menace of sedimentation. The underwater delta is advancing at a rapid pace towards the main embankment dam, being at 5.25 miles from Main Embankment Dam (MED) in 2012. This study is aimed at monitoring Tarbela reservoir's underwater delta pivot point advancement and its forecast mapping. Secondary data regarding pivot point elevation and its distance from the MED was obtained from the reservoir's library. Base map of delta direction was obtained from the surveying department at Tarbela dam. The data was processed in Arc GIS and Microsoft Excel to perform meaningful analysis. The study concludes that the average sediments deposited in the reservoir for the period of 1980-2012 were 0.1 MAF. Delta pivot point was at a distance of 5.45 miles from the MED in 2012 and according to our study, it will be only at a distance of 0.45 miles from MED in 2032. The In order to enhance the efficiency and life of Tarbela dam, this study suggests that immediate sediment management, either active or passive methods e.g. dredging, hydro suction and flushing must be adopted.
Page(s):
40-46
DOI:
DOI not available
Published:
Journal: Journal of Himalayan Earth Sciences, Volume: 54, Issue: 2, Year: 2021
Keywords:
sedimentation
,
dredging
,
sediment management
,
hydro suction
,
Pivot point
,
Underwater delta
,
Main Embankment Dam
,
Tarbela dam
References:
References are not available for this document.
Citations
Citations are not available for this document.