Modeling the Influence of River Flow and Salt Water Intrusion in the Terengganu Estuary, Malaysia

H. L. Lee, Fredolin Tangang @ Tajudin Mahmud, M. R. Hamid, Y. Benson, M. R. Razali

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Salinity intrusion is a major concern when the freshwater extraction station is located in the estuary. This paper attempt to predict the salt intrusion length in the upper stretch of estuary, by applying different magnitudes of freshwater discharge at the river regime. The integrated two dimensional hydrodynamics model associated with advection dispersion model was performed to investigate the salinity intrusion. The model was well calibrated and verified by the measured data undertaken during dry season. The maximum salt intrusion length to the threshold of salinity density is 1.00 ppt on the existing condition was predicted at 9.97 km from the river mouth. Moreover, with the magnitude of 100.00 m3s-1 and 30.00 m3s-1 freshwater discharges at the upstream boundary (Kpg Tanggol), it was predicted the maximum salt intrusion length was 11.84 km and 21.41 km, respectively, from the river mouth. Therefore, it was determined the minimum freshwater discharge of approximately 100.00 m3s-1 is required at the Kpg Tanggol river gauging station, in order to maintain the acceptable salinity levels at the Pulau Musang freshwater pump house. However, the actual water discharge at the Kpg Tanggol boundary station should be higher, since the minimum discharge does not take into consideration the amount of water extraction by the Pulau Musang and SATU pump stations. Further analysis is required to execute the consequences of water extraction toward the salinity intrusion in the Terengganu estuary that coupled with projected sea level rise.

Original languageEnglish
Article number012076
JournalUnknown Journal
Volume136
Issue number1
DOIs
Publication statusPublished - 22 Jul 2016

Fingerprint

Salt water intrusion
Estuaries
Malaysia
Salinity
salt water
Fresh Water
Rivers
river flow
Salts
estuary
Water
salinity
modeling
Pumps
Mouth
salt
river
Gaging
pump
Sea level

Keywords

  • diurnal tide
  • high water level
  • hydrodynamic
  • numerical model
  • salinity intrusion

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

Modeling the Influence of River Flow and Salt Water Intrusion in the Terengganu Estuary, Malaysia. / Lee, H. L.; Tangang @ Tajudin Mahmud, Fredolin; Hamid, M. R.; Benson, Y.; Razali, M. R.

In: Unknown Journal, Vol. 136, No. 1, 012076, 22.07.2016.

Research output: Contribution to journalArticle

@article{1fd5870bbc2049978c35839163e4516d,
title = "Modeling the Influence of River Flow and Salt Water Intrusion in the Terengganu Estuary, Malaysia",
abstract = "Salinity intrusion is a major concern when the freshwater extraction station is located in the estuary. This paper attempt to predict the salt intrusion length in the upper stretch of estuary, by applying different magnitudes of freshwater discharge at the river regime. The integrated two dimensional hydrodynamics model associated with advection dispersion model was performed to investigate the salinity intrusion. The model was well calibrated and verified by the measured data undertaken during dry season. The maximum salt intrusion length to the threshold of salinity density is 1.00 ppt on the existing condition was predicted at 9.97 km from the river mouth. Moreover, with the magnitude of 100.00 m3s-1 and 30.00 m3s-1 freshwater discharges at the upstream boundary (Kpg Tanggol), it was predicted the maximum salt intrusion length was 11.84 km and 21.41 km, respectively, from the river mouth. Therefore, it was determined the minimum freshwater discharge of approximately 100.00 m3s-1 is required at the Kpg Tanggol river gauging station, in order to maintain the acceptable salinity levels at the Pulau Musang freshwater pump house. However, the actual water discharge at the Kpg Tanggol boundary station should be higher, since the minimum discharge does not take into consideration the amount of water extraction by the Pulau Musang and SATU pump stations. Further analysis is required to execute the consequences of water extraction toward the salinity intrusion in the Terengganu estuary that coupled with projected sea level rise.",
keywords = "diurnal tide, high water level, hydrodynamic, numerical model, salinity intrusion",
author = "Lee, {H. L.} and {Tangang @ Tajudin Mahmud}, Fredolin and Hamid, {M. R.} and Y. Benson and Razali, {M. R.}",
year = "2016",
month = "7",
day = "22",
doi = "10.1088/1757-899X/136/1/012076",
language = "English",
volume = "136",
journal = "Journal of Water Process Engineering",
issn = "2214-7144",
publisher = "Elsevier Limited",
number = "1",

}

TY - JOUR

T1 - Modeling the Influence of River Flow and Salt Water Intrusion in the Terengganu Estuary, Malaysia

AU - Lee, H. L.

AU - Tangang @ Tajudin Mahmud, Fredolin

AU - Hamid, M. R.

AU - Benson, Y.

AU - Razali, M. R.

PY - 2016/7/22

Y1 - 2016/7/22

N2 - Salinity intrusion is a major concern when the freshwater extraction station is located in the estuary. This paper attempt to predict the salt intrusion length in the upper stretch of estuary, by applying different magnitudes of freshwater discharge at the river regime. The integrated two dimensional hydrodynamics model associated with advection dispersion model was performed to investigate the salinity intrusion. The model was well calibrated and verified by the measured data undertaken during dry season. The maximum salt intrusion length to the threshold of salinity density is 1.00 ppt on the existing condition was predicted at 9.97 km from the river mouth. Moreover, with the magnitude of 100.00 m3s-1 and 30.00 m3s-1 freshwater discharges at the upstream boundary (Kpg Tanggol), it was predicted the maximum salt intrusion length was 11.84 km and 21.41 km, respectively, from the river mouth. Therefore, it was determined the minimum freshwater discharge of approximately 100.00 m3s-1 is required at the Kpg Tanggol river gauging station, in order to maintain the acceptable salinity levels at the Pulau Musang freshwater pump house. However, the actual water discharge at the Kpg Tanggol boundary station should be higher, since the minimum discharge does not take into consideration the amount of water extraction by the Pulau Musang and SATU pump stations. Further analysis is required to execute the consequences of water extraction toward the salinity intrusion in the Terengganu estuary that coupled with projected sea level rise.

AB - Salinity intrusion is a major concern when the freshwater extraction station is located in the estuary. This paper attempt to predict the salt intrusion length in the upper stretch of estuary, by applying different magnitudes of freshwater discharge at the river regime. The integrated two dimensional hydrodynamics model associated with advection dispersion model was performed to investigate the salinity intrusion. The model was well calibrated and verified by the measured data undertaken during dry season. The maximum salt intrusion length to the threshold of salinity density is 1.00 ppt on the existing condition was predicted at 9.97 km from the river mouth. Moreover, with the magnitude of 100.00 m3s-1 and 30.00 m3s-1 freshwater discharges at the upstream boundary (Kpg Tanggol), it was predicted the maximum salt intrusion length was 11.84 km and 21.41 km, respectively, from the river mouth. Therefore, it was determined the minimum freshwater discharge of approximately 100.00 m3s-1 is required at the Kpg Tanggol river gauging station, in order to maintain the acceptable salinity levels at the Pulau Musang freshwater pump house. However, the actual water discharge at the Kpg Tanggol boundary station should be higher, since the minimum discharge does not take into consideration the amount of water extraction by the Pulau Musang and SATU pump stations. Further analysis is required to execute the consequences of water extraction toward the salinity intrusion in the Terengganu estuary that coupled with projected sea level rise.

KW - diurnal tide

KW - high water level

KW - hydrodynamic

KW - numerical model

KW - salinity intrusion

UR - http://www.scopus.com/inward/record.url?scp=84989329077&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84989329077&partnerID=8YFLogxK

U2 - 10.1088/1757-899X/136/1/012076

DO - 10.1088/1757-899X/136/1/012076

M3 - Article

VL - 136

JO - Journal of Water Process Engineering

JF - Journal of Water Process Engineering

SN - 2214-7144

IS - 1

M1 - 012076

ER -