Impacts of barrage flushing and flooding in operations on upstream total suspended solids

This study looks into the impacts of Sarawak Barrage (located in Kuching City, State of Sarawak, Malaysia) flushing and flooding-in operations on upstream total suspended solids (TSS). Water samples were collected from three upstream stations on 17th, 18th and 19th of August 2000. During flushing,...

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Main Authors:	Law, P.L, Law, I.N., Lau, H.H, Kho, F. W. L.
Format:	Article
Language:	English
Published:	Springer Science 2007
Subjects:	TC Hydraulic engineering. Ocean engineering
Online Access:	http://ir.unimas.my/11096/ http://ir.unimas.my/11096/1/Impacts%20of%20barrage%20flushing%20and%20flooding%20in%20operations%20on%20upstream%20total%20suspended%20solids%20%28abstract%29.pdf

id	unimas-11096
recordtype	eprints
spelling	unimas-110962016-03-24T07:51:12Z http://ir.unimas.my/11096/ Impacts of barrage flushing and flooding in operations on upstream total suspended solids Law, P.L Law, I.N. Lau, H.H Kho, F. W. L. TC Hydraulic engineering. Ocean engineering This study looks into the impacts of Sarawak Barrage (located in Kuching City, State of Sarawak, Malaysia) flushing and flooding-in operations on upstream total suspended solids (TSS). Water samples were collected from three upstream stations on 17th, 18th and 19th of August 2000. During flushing, it was observed that TSS levels increased over a distance of 11 km upstream. Maximum TSS recorded 250 mg/L at 1.5 km, 120 mg/L at 6 km, and 85 mg/L at 11 km upstream. During flushing, TSS levels increased with depth, and upstream turbulence intensities were indirectly proportional to distance from barrage. During flooding-in operation, TSS decreased from 249 to 155 mg/L at 1.5 km near the bottom, while surface TSS decreased from 86 to 58 mg/L. Generally, during flooding-in operation, TSS increased from 90 to 116 mg/L between 6 and 11 km. During flooding-in operation, maximum bottom TSS recorded 216 mg/L at 6 km upstream. Differences between bottom and mid-depth TSS levels were relatively minimal ranging from 19 to 45 mg/L, whilst the maximum difference between mid-depth and surface TSS was as high as 78 mg/L. After 9 hours of gate closure, a well-mixed regime prevailed from 6 to 11 km upstream with TSS ranged from 35 to 47 mg/L at all the monitoring points regardless of depths. Springer Science 2007 Article PeerReviewed text en http://ir.unimas.my/11096/1/Impacts%20of%20barrage%20flushing%20and%20flooding%20in%20operations%20on%20upstream%20total%20suspended%20solids%20%28abstract%29.pdf Law, P.L and Law, I.N. and Lau, H.H and Kho, F. W. L. (2007) Impacts of barrage flushing and flooding in operations on upstream total suspended solids. International Journal Environmental Science Technology, 4 (1). pp. 75-83. ISSN 1735-1472
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Sarawak
building	UNIMAS Institutional Repository
collection	Online Access
language	English
topic	TC Hydraulic engineering. Ocean engineering
spellingShingle	TC Hydraulic engineering. Ocean engineering Law, P.L Law, I.N. Lau, H.H Kho, F. W. L. Impacts of barrage flushing and flooding in operations on upstream total suspended solids
description	This study looks into the impacts of Sarawak Barrage (located in Kuching City, State of Sarawak, Malaysia) flushing and flooding-in operations on upstream total suspended solids (TSS). Water samples were collected from three upstream stations on 17th, 18th and 19th of August 2000. During flushing, it was observed that TSS levels increased over a distance of 11 km upstream. Maximum TSS recorded 250 mg/L at 1.5 km, 120 mg/L at 6 km, and 85 mg/L at 11 km upstream. During flushing, TSS levels increased with depth, and upstream turbulence intensities were indirectly proportional to distance from barrage. During flooding-in operation, TSS decreased from 249 to 155 mg/L at 1.5 km near the bottom, while surface TSS decreased from 86 to 58 mg/L. Generally, during flooding-in operation, TSS increased from 90 to 116 mg/L between 6 and 11 km. During flooding-in operation, maximum bottom TSS recorded 216 mg/L at 6 km upstream. Differences between bottom and mid-depth TSS levels were relatively minimal ranging from 19 to 45 mg/L, whilst the maximum difference between mid-depth and surface TSS was as high as 78 mg/L. After 9 hours of gate closure, a well-mixed regime prevailed from 6 to 11 km upstream with TSS ranged from 35 to 47 mg/L at all the monitoring points regardless of depths.
format	Article
author	Law, P.L Law, I.N. Lau, H.H Kho, F. W. L.
author_facet	Law, P.L Law, I.N. Lau, H.H Kho, F. W. L.
author_sort	Law, P.L
title	Impacts of barrage flushing and flooding in operations on upstream total suspended solids
title_short	Impacts of barrage flushing and flooding in operations on upstream total suspended solids
title_full	Impacts of barrage flushing and flooding in operations on upstream total suspended solids
title_fullStr	Impacts of barrage flushing and flooding in operations on upstream total suspended solids
title_full_unstemmed	Impacts of barrage flushing and flooding in operations on upstream total suspended solids
title_sort	impacts of barrage flushing and flooding in operations on upstream total suspended solids
publisher	Springer Science
publishDate	2007
url	http://ir.unimas.my/11096/ http://ir.unimas.my/11096/1/Impacts%20of%20barrage%20flushing%20and%20flooding%20in%20operations%20on%20upstream%20total%20suspended%20solids%20%28abstract%29.pdf
first_indexed	2018-09-06T15:51:38Z
last_indexed	2018-09-06T15:51:38Z
_version_	1610873935201566720

Impacts of barrage flushing and flooding in operations on upstream total suspended solids

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