Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan

Since Bakun Hydroelectric Reservoir was filled, there has not been any published literature on its water quality. A previous study conducted during its filling stage showed that the DO level dropped very rapidly and the water was turbid. Since water quality was expected to improve over time, this s...

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Main Authors:	Lee, Nyanti, Ling, Teck-Yee, Muan, Theresa
Format:	Article
Language:	English
Published:	Universiti Teknologi MARA, Pulau Pinang 2015
Subjects:	Malaysia Dams. Barrages Qualities of water. Water quality
Online Access:	http://ir.uitm.edu.my/id/eprint/11990/ http://ir.uitm.edu.my/id/eprint/11990/1/AJ_LEE%20NYANTI%20EAJ%2015.pdf

id	uitm-11990
recordtype	eprints
spelling	uitm-119902016-07-26T17:01:07Z http://ir.uitm.edu.my/id/eprint/11990/ Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan Lee, Nyanti Ling, Teck-Yee Muan, Theresa Malaysia Dams. Barrages Qualities of water. Water quality Since Bakun Hydroelectric Reservoir was filled, there has not been any published literature on its water quality. A previous study conducted during its filling stage showed that the DO level dropped very rapidly and the water was turbid. Since water quality was expected to improve over time, this study was carried out. Six stations and 3 depths at each station were investigated. Results show that dissolved oxygen at 0.5 m depth ranged from 6.25 to 7.02 mg/L but the water was anoxic at 15 m and 30 m depths. pH at 0.5 m depth in the reservoir ranged from 7.37 to 7.73 and decreased with depth to acidic condition. In the reservoir, turbidity at the subsurface were 0 NTU but at 15 m depth, it ranged from 19.5-105.4 NTU. BOD5 were higher at 15 m and 30 m than 0.5 m depth. There was some improvement of water quality for stations in the reservoir compared to the previous study, especially in terms of pH and DO, but turbidity was still high at deeper regions. Stations in the Murum River and its downstream showed extremely high turbidity attributed to the construction of the Murum Dam. Thus, the river was not suitable for sensitive aquatic organisms. Universiti Teknologi MARA, Pulau Pinang 2015 Article PeerReviewed text en http://ir.uitm.edu.my/id/eprint/11990/1/AJ_LEE%20NYANTI%20EAJ%2015.pdf Lee, Nyanti and Ling, Teck-Yee and Muan, Theresa (2015) Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan. Esteem Academic Journal, 11 (1). pp. 81-88. ISSN 1675-7939
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Teknologi MARA
building	UiTM Institutional Repository
collection	Online Access
language	English
topic	Malaysia Dams. Barrages Qualities of water. Water quality
spellingShingle	Malaysia Dams. Barrages Qualities of water. Water quality Lee, Nyanti Ling, Teck-Yee Muan, Theresa Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan
description	Since Bakun Hydroelectric Reservoir was filled, there has not been any published literature on its water quality. A previous study conducted during its filling stage showed that the DO level dropped very rapidly and the water was turbid. Since water quality was expected to improve over time, this study was carried out. Six stations and 3 depths at each station were investigated. Results show that dissolved oxygen at 0.5 m depth ranged from 6.25 to 7.02 mg/L but the water was anoxic at 15 m and 30 m depths. pH at 0.5 m depth in the reservoir ranged from 7.37 to 7.73 and decreased with depth to acidic condition. In the reservoir, turbidity at the subsurface were 0 NTU but at 15 m depth, it ranged from 19.5-105.4 NTU. BOD5 were higher at 15 m and 30 m than 0.5 m depth. There was some improvement of water quality for stations in the reservoir compared to the previous study, especially in terms of pH and DO, but turbidity was still high at deeper regions. Stations in the Murum River and its downstream showed extremely high turbidity attributed to the construction of the Murum Dam. Thus, the river was not suitable for sensitive aquatic organisms.
format	Article
author	Lee, Nyanti Ling, Teck-Yee Muan, Theresa
author_facet	Lee, Nyanti Ling, Teck-Yee Muan, Theresa
author_sort	Lee, Nyanti
title	Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan
title_short	Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan
title_full	Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan
title_fullStr	Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan
title_full_unstemmed	Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan
title_sort	water quality of bakun hydroelectric dam reservoir, sarawak, malaysia, during the construction of murum dam / lee nyanti, teck-yee ling and theresa muan
publisher	Universiti Teknologi MARA, Pulau Pinang
publishDate	2015
url	http://ir.uitm.edu.my/id/eprint/11990/ http://ir.uitm.edu.my/id/eprint/11990/1/AJ_LEE%20NYANTI%20EAJ%2015.pdf
first_indexed	2023-09-18T22:48:48Z
last_indexed	2023-09-18T22:48:48Z
_version_	1777417405226549248

Water quality of Bakun Hydroelectric Dam Reservoir, Sarawak, Malaysia, during the construction of Murum dam / Lee Nyanti, Teck-Yee Ling and Theresa Muan

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