Malaysia is one of the tropical countries in the world and floods are the most common disaster in... more Malaysia is one of the tropical countries in the world and floods are the most common disaster in Malaysia. Flood simulation model was carried out along Terengganu River for dry and rainy seasons. The result of the simulation shows the water level reached its maximum le with the highest flow of Q = 155.90m value of Q and this because it is at the upstream of the River, while stations 2, 3 and 4 are almost dry because they are at the downstream of the river. Similarly, a 10 years data was also modeled as a secondary data to validate the primary data. This shows that, the simulation was good and XP-SWMM is compatible for flood simulation. Malaysia is one of the tropical countries in the world with heavy rainfall throughout the year and floods are the most common disaster in Malaysia. Flood simulation model was carried out along Terengganu River for dry and rainy seasons. The result of the simulation shows the water level reached its maximum level at the 1st two hours of the simulation at about 2:40min 155.90m 3 /s and velocity V = 1.52m/s. Station 1 have the highest value of Q and this because it is at the upstream of the River, while stations 2, 3 and 4 are y because they are at the downstream of the river. Similarly, a 10 years data was also modeled as a secondary data to validate the primary data. This shows that, the simulation was SWMM is compatible for flood simulation. with heavy rainfall throughout the year and floods are the most common disaster in Malaysia. Flood simulation model was carried out along Terengganu River for dry and rainy seasons. The result of the simulation shows the vel at the 1st two hours of the simulation at about 2:40min 1.52m/s. Station 1 have the highest value of Q and this because it is at the upstream of the River, while stations 2, 3 and 4 are
Graphical abstract Abstract Rivers is one of the complex natural systems. Classification of the r... more Graphical abstract Abstract Rivers is one of the complex natural systems. Classification of the river plan change is very important to know the river problems in early stage, where the classification database can help to understand the behavior of the river in each part. This article discusses about the classification of river plan change at the mainstream of Pahang River, Malaysia. Based on Geographical Information System (GIS) and Remote Sensing (RS) database, analysis of Types Of Lateral Activity (TYLAT) method and Modes of Meander Movement (MOME) method have been used to identify the evolution of the river plan change. The study results indicated, methods of TYLAT are more suitable to use for examining the evolution of river plan change for large and width rivers. While, method of analysis MOME index is more suitable for smaller types of rivers as the upper and middle reaches of the river. From this result, this study can be produced the basic information or database to understanding the characteristics or behavior parts in parts of the main Pahang River. This result also is very important to local authorities to know the early river problems in this area. Abstrak Sungai merupakan satu sistem semula jadi yang kompleks. Pengelasan perubahan pelan sungai adalah sangat penting bagi mengetahui masalah sungai di peringkat awal, di mana pangkalan data pengelasan sungai boleh membantu untuk memahami tingkah laku sungai di setiap bahagian. Artikel ini membincangkan mengenai klasifikasi perubahan pelan sungai di aliran utama Sungai Pahang, Malaysia. Berdasarkan data dari Sistem Maklumat Geografi (GIS) dan Remote Sensing (RS), kaedah analisis Jenis Aktiviti Lateral (TYLAT) dan Kaedah Pergerakan Meander (MOME) telah digunakan untuk mengenal pasti evolusi perubahan pelan sungai yang berlaku. Hasil kajian menunjukkan, kaedah TYLAT lebih sesuai digunakan untuk memeriksa evolusi perubahan pelan sungai bagi sungai berskala besar dan lebar. Manakala, kaedah MOME lebih sesuai untuk sungai yang lebih kecil atau di bahagian hulu dan pertengahan sungai. Daripada keputusan ini, kajian dapat menghasilkan maklumat asas atau pangkalan data untuk memahami ciri-ciri atau tingkah laku di bahagian-bahagian yang terdapat di aliran utama Sungai Pahang. Keputusan ini juga adalah sangat penting kepada pihak-pihak berkaitan untuk mengenal pasti permasalahan sungai dari peringkat awal.
Floods in Malaysia are the most frequent and devastating natural hazard. Every state in Malaysia ... more Floods in Malaysia are the most frequent and devastating natural hazard. Every state in Malaysia has been affected with either flood or flash floods depending on the period of monsoon season. Flood risk simulation was carried out along Terengganu River for rainy season. First, Terengganu River was modeled using XP SWMM software for flood simulation for the period of10 years from the result, it is clear that, from 2002 to 2012 the maximum flow occurs between November and December 2003 with the maximum average flow of 76.7m 3 /s.Therefore, the simulation was carried out only within the period that high flow observed which is from 29 th November to 14 th December. From the simulation result, the maximum flow was on the 1 st day of the simulation at about 21:11:00 and stay for the whole day until the next day of simulation. On the 5 th day at about 13:08:00 the water level was at the crown level until next day. Similarly, on the 6 th day at about 22:26:00, the water level was shallow and it was at dry level as indicated by the symbol during the simulation. After that, the level maintained at either freeboard or ground level until the 9 th day of the simulation where the level was very high at about 09:55:00 and also on the 14 th day the water level rises up again. Conclusively, there is no flood in the Terengganu River for the period of simulation. This shows that, the simulation was good and XP-SWMM is compatible for flood simulation
This study investigated the pattern and trends of the daily rainfall data in Terengganu Malaysia ... more This study investigated the pattern and trends of the daily rainfall data in Terengganu Malaysia based on seasonal rainfall indices. The statistics of rainfall indices were calculated in terms of their means for seven stations in Terengganu Malaysia for the period 2000 to 2012. The findings indicate that the trend in the study area has no significant changes in stations (1, 4 and 6) while station (2, 3, 5 and 7) shows significant changes and southwest monsoon had the greatest impact on the whole stations, particularly in characterizing the rainfall pattern of the area. During this season, the study area could be considered as the wettest region since all rainfall indices tested are higher than in other neighboring state of the Peninsula. Otherwise, the northwest of the area is denoted as the driest part of the state during the northeast monsoon period. The northwest of the state is less influenced by the northeast monsoon because of the existence of the Titiwangsa Range, which blocks some part of the region from receiving heavy rainfall. On the other hand, it is found that the areas with lowlands are strongly characterized by the northeast monsoonal flow.The results of the Mann-Kendall test, shows that, trends of the total amount of rainfall during the southwest monsoon decrease at some of the stations. The rainfall intensity increases in contrast, increasing trends in the total amount of rainfall were observed at three stations during the northeast monsoon, which give rise to the increasing trend of rainfall intensity. The results for the combined stations in both seasons indicate that there are no significant changes in trends during the extreme events for the Terengganu Malaysia. However, a smaller number of significant trends were found for extreme intensity.
... Kepekatan logam berat di dalam tumbuhan mengikut kepekatan menurun adalah Ni>Co>Cd>P... more ... Kepekatan logam berat di dalam tumbuhan mengikut kepekatan menurun adalah Ni>Co>Cd>Pb>Zn. Kepekatan logam di dalam bahagian-bahagian tumbuhan tidak menunjukkan perbezaan signifikan bagi semua logam. ... 6. Harpenden. Brooks, RR 1977. ...
... RAZI IDRIS, ZULFAHMI ALI RAHMAN, TUKIMAT LIHAN, MUHD BARZANI GASIM, MOHD NIZAM M. SAID &a... more ... RAZI IDRIS, ZULFAHMI ALI RAHMAN, TUKIMAT LIHAN, MUHD BARZANI GASIM, MOHD NIZAM M. SAID & KANG LING XING ... kompleks yang dilengkapi dengan infrastruktur, utiliti dan prasarana yang lengkap meliputi kemudahan peralatan dan ruang makmal, serta ruang ...
This study aims to investigate the spatial variation in the source of air pollution, identify the... more This study aims to investigate the spatial variation in the source of air pollution, identify the percentage contribution of each pollutant and apportion the mass contribution of each source category using chemometric techniques. Hierarchical agglomerative cluster analysis (HACA) successfully grouped the five air monitoring sites into three groups (cluster 1, 2 and 3). Principal component analysis (PCA) was used to spot out the sources of air pollution which are attributed to anthropogenic activities. Multiple linear regression (MLR) was used to develop an equation model that explains the contribution of pollutants in each cluster. However, it was observed that particulate matter (PM10) and Ozone (O3) are the most significant pollutants influencing the value of air pollutant index (API). Meanwhile, the source apportionment indicates that cluster 1 is influenced by gas and non-gas pollutants to a degree of 84%, weather condition 15% and 1% by gas and secondary pollutants. Cluster 2 is affected by gas and secondary pollutants to a tune of 87% and 13% by weather condition while cluster 3 is apportioned with 98% secondary gas and non-gas pollutants and 2% weather condition. This study reveals the usefulness of chemometric technique in modeling and reducing the cost and time of monitoring redundant stations and parameters.
Rivers is one of the complex natural systems. Classification of the river plan change is very imp... more Rivers is one of the complex natural systems. Classification of the river plan change is very important to know the river problems in early stage, where the classification database can help to understand the behavior of the river in each part. This article discusses about the classification of river plan change at the mainstream of Pahang River, Malaysia. Based on Geographical Information System (GIS) and Remote Sensing (RS) database, analysis of Types Of Lateral Activity (TYLAT) method and Modes of Meander Movement (MOME) method have been used to identify the evolution of the river plan change. The study results indicated, methods of TYLAT are more suitable to use for examining the evolution of river plan change for large and width rivers. While, method of analysis MOME index is more suitable for smaller types of rivers as the upper and middle reaches of the river. From this result, this study can be produced the basic information or database to understanding the characteristics or behavior parts in parts of the main Pahang River. This result also is very important to local authorities to know the early river problems in this area.
Jinjang River is a branch of the Klang River, which today suffers from a decline in water quality... more Jinjang River is a branch of the Klang River, which today suffers from a decline in water quality resulting from agricultural and development activities. A study on the water quality of Jinjang River was conducted in both June and October 2011. The purposes of the study were to determine the water quality of Jinjang River based on physicochemical and biological parameters and to classify the Jinjang River based on National Water Quality Standards (NWQS) and the Water Quality Index (WQI). A total of five sampling stations were selected along the river; two stations (S1 and S2) represented the upstream region and another three stations (S3, S4, and S5) represented the downstream region of the river. Fourteen water-quality parameters were selected. As a result of the analysis, Jinjang River was categorized as a slightly polluted river (WQI) and was classified as Class III. The result, compared with the NWQS, showed that most of the water-quality parameters studied ranged from Class I to Class IV, except for biological parameters (Escherichia coli), which were classified as Class V. This indicates that the river was extremely contaminated with fecal coliform bacteria (E. coli).
A study of water quality was carried out at selected rivers in Cameron Highlands. The procedure w... more A study of water quality was carried out at selected rivers in Cameron Highlands. The procedure was carried over four sampling periods; namely March, June, September and December 2007. The objective of the study was to analyze the water quality at 15 sampling stations. The water at 6 of the sampling stations was classified as clean water and was used
The Semenyih River is one of the most important rivers in Selangor, Malaysia, because it function... more The Semenyih River is one of the most important rivers in Selangor, Malaysia, because it functions as a resource for domestic water supply, fishing, and recreation. It has been adversely affected by urban and industrial wastes since the early 1990s. This study assessed the contamination status of the Semenyih River based on the National Water Quality Standards for Malaysian rivers (NWQS) and the national Water Quality Index (WQI) classifications. Although 10 of the waterquality parameters were within the recommended levels for the NWQS, levels of phosphate (PO4), E. coli, and total coliform bacteria were found to exceed the threshold. The Semenyih River is polluted by human activities from its upstream section (contamination by E. coli, coliform bacteria, and PO4) and is therefore characterized as Class III based on NWQS classificationBased on WQI, the Semenyih River was classified as slightly polluted and placed in Class II for Malaysian rivers at all sampling stations except stati...
This study investigated the pattern and trends of the daily rainfall data in Terengganu Malaysia ... more This study investigated the pattern and trends of the daily rainfall data in Terengganu Malaysia based on seasonal rainfall indices. The statistics of rainfall indices were calculated in terms of their means for seven stations in Terengganu Malaysia for the period 2000 to 2012. The findings indicate that the trend in the study area has no significant changes in stations (1, 4 and 6) while station (2, 3, 5 and 7) shows significant changes and southwest monsoon had the greatest impact on the whole stations, particularly in characterizing the rainfall pattern of the area. During this season, the study area could be considered as the wettest region since all rainfall indices tested are higher than in other neighboring state of the Peninsula. Otherwise, the northwest of the area is denoted as the driest part of the state during the northeast monsoon period. The northwest of the state is less influenced by the northeast monsoon because of the existence of the Titiwangsa Range, which block...
Abstract: Pahang River is the main channel to drain off water from the inundated area of Pahang B... more Abstract: Pahang River is the main channel to drain off water from the inundated area of Pahang Basin to the South China Sea during wet season which is caused by the northeast monsoon. Most of the inundations of lower areas of Pahang River Basin were caused by ...
A study of water quality was carried out at selected rivers in Cameron Highlands. The procedure w... more A study of water quality was carried out at selected rivers in Cameron Highlands. The procedure was carried over four sampling periods; namely March, June, September and December 2007. The objective of the study was to analyze the water quality at 15 sampling stations. The water at 6 of the sampling stations was classified as clean water and was used as the water source by the local settlements while the water at the others stations was considered contaminated because of various human activities. Water quality parameters such as pH and Dissolved Oxygen (DO) were measured in-situ using the YSI 556 multi parameters. The levels of Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS) and ammonia nitrogen (NH3-N) were analyzed using the APHA and HACH methods. Results of the analysis were standardized with the Water Quality Index (WQI). During the rainy season (Dicember 2007) some of water quality parameters increased, for example: the Total Suspended...
Development and effective utilization of groundwater resources is essential especially in semi-ar... more Development and effective utilization of groundwater resources is essential especially in semi-arid region and in a region with abundant rainfall such as the study area for activities such as water supply and irrigation. The present study aims to analyse statistically the groundwater level, stream flow and rainfall data of 13years (2000- 2012) collected from the Department of Minerals and Geosciences and Department of Irrigation and Drainage Terengganu for the seven stations: Besut, Dungun, Kemaman, Bukit, Paka, Cherul and Menerong of Terengganu Malaysia. The homogeneity test was made to make sure that all the series of data are homogenous. The regression analysis method was adapted to analyses the relationship of groundwater level variability with the rainfall distribution. The analysis indicated that the rainfall distribution has an influence on groundwater level in the study area due to positive relationship shown by regression analysis. Although in some stations the influence is not much significant, that is the groundwater levels depends on runoff and other factors rather than rainfall. Such stations are Site 4930401 SG. Berang at Menerong shows 14.7%, Site 4232401 SG. Kemaman shows 27.2 %, and Site 4732461 SG. Paka shows 35.2%. The station that shows great influence of rainfall in determining the groundwater level is Site 5229436 SG Nerus, which has 58.5%, while the remaining stations are moderate. Therefore Vector Error Correction Model were employed after the introducing of stream flow data to test and confirmed this relationship, and were found to be strong as indicated by the result of the analysis.
Malaysia is one of the tropical countries in the world and floods are the most common disaster in... more Malaysia is one of the tropical countries in the world and floods are the most common disaster in Malaysia. Flood simulation model was carried out along Terengganu River for dry and rainy seasons. The result of the simulation shows the water level reached its maximum le with the highest flow of Q = 155.90m value of Q and this because it is at the upstream of the River, while stations 2, 3 and 4 are almost dry because they are at the downstream of the river. Similarly, a 10 years data was also modeled as a secondary data to validate the primary data. This shows that, the simulation was good and XP-SWMM is compatible for flood simulation. Malaysia is one of the tropical countries in the world with heavy rainfall throughout the year and floods are the most common disaster in Malaysia. Flood simulation model was carried out along Terengganu River for dry and rainy seasons. The result of the simulation shows the water level reached its maximum level at the 1st two hours of the simulation at about 2:40min 155.90m 3 /s and velocity V = 1.52m/s. Station 1 have the highest value of Q and this because it is at the upstream of the River, while stations 2, 3 and 4 are y because they are at the downstream of the river. Similarly, a 10 years data was also modeled as a secondary data to validate the primary data. This shows that, the simulation was SWMM is compatible for flood simulation. with heavy rainfall throughout the year and floods are the most common disaster in Malaysia. Flood simulation model was carried out along Terengganu River for dry and rainy seasons. The result of the simulation shows the vel at the 1st two hours of the simulation at about 2:40min 1.52m/s. Station 1 have the highest value of Q and this because it is at the upstream of the River, while stations 2, 3 and 4 are
Graphical abstract Abstract Rivers is one of the complex natural systems. Classification of the r... more Graphical abstract Abstract Rivers is one of the complex natural systems. Classification of the river plan change is very important to know the river problems in early stage, where the classification database can help to understand the behavior of the river in each part. This article discusses about the classification of river plan change at the mainstream of Pahang River, Malaysia. Based on Geographical Information System (GIS) and Remote Sensing (RS) database, analysis of Types Of Lateral Activity (TYLAT) method and Modes of Meander Movement (MOME) method have been used to identify the evolution of the river plan change. The study results indicated, methods of TYLAT are more suitable to use for examining the evolution of river plan change for large and width rivers. While, method of analysis MOME index is more suitable for smaller types of rivers as the upper and middle reaches of the river. From this result, this study can be produced the basic information or database to understanding the characteristics or behavior parts in parts of the main Pahang River. This result also is very important to local authorities to know the early river problems in this area. Abstrak Sungai merupakan satu sistem semula jadi yang kompleks. Pengelasan perubahan pelan sungai adalah sangat penting bagi mengetahui masalah sungai di peringkat awal, di mana pangkalan data pengelasan sungai boleh membantu untuk memahami tingkah laku sungai di setiap bahagian. Artikel ini membincangkan mengenai klasifikasi perubahan pelan sungai di aliran utama Sungai Pahang, Malaysia. Berdasarkan data dari Sistem Maklumat Geografi (GIS) dan Remote Sensing (RS), kaedah analisis Jenis Aktiviti Lateral (TYLAT) dan Kaedah Pergerakan Meander (MOME) telah digunakan untuk mengenal pasti evolusi perubahan pelan sungai yang berlaku. Hasil kajian menunjukkan, kaedah TYLAT lebih sesuai digunakan untuk memeriksa evolusi perubahan pelan sungai bagi sungai berskala besar dan lebar. Manakala, kaedah MOME lebih sesuai untuk sungai yang lebih kecil atau di bahagian hulu dan pertengahan sungai. Daripada keputusan ini, kajian dapat menghasilkan maklumat asas atau pangkalan data untuk memahami ciri-ciri atau tingkah laku di bahagian-bahagian yang terdapat di aliran utama Sungai Pahang. Keputusan ini juga adalah sangat penting kepada pihak-pihak berkaitan untuk mengenal pasti permasalahan sungai dari peringkat awal.
Floods in Malaysia are the most frequent and devastating natural hazard. Every state in Malaysia ... more Floods in Malaysia are the most frequent and devastating natural hazard. Every state in Malaysia has been affected with either flood or flash floods depending on the period of monsoon season. Flood risk simulation was carried out along Terengganu River for rainy season. First, Terengganu River was modeled using XP SWMM software for flood simulation for the period of10 years from the result, it is clear that, from 2002 to 2012 the maximum flow occurs between November and December 2003 with the maximum average flow of 76.7m 3 /s.Therefore, the simulation was carried out only within the period that high flow observed which is from 29 th November to 14 th December. From the simulation result, the maximum flow was on the 1 st day of the simulation at about 21:11:00 and stay for the whole day until the next day of simulation. On the 5 th day at about 13:08:00 the water level was at the crown level until next day. Similarly, on the 6 th day at about 22:26:00, the water level was shallow and it was at dry level as indicated by the symbol during the simulation. After that, the level maintained at either freeboard or ground level until the 9 th day of the simulation where the level was very high at about 09:55:00 and also on the 14 th day the water level rises up again. Conclusively, there is no flood in the Terengganu River for the period of simulation. This shows that, the simulation was good and XP-SWMM is compatible for flood simulation
This study investigated the pattern and trends of the daily rainfall data in Terengganu Malaysia ... more This study investigated the pattern and trends of the daily rainfall data in Terengganu Malaysia based on seasonal rainfall indices. The statistics of rainfall indices were calculated in terms of their means for seven stations in Terengganu Malaysia for the period 2000 to 2012. The findings indicate that the trend in the study area has no significant changes in stations (1, 4 and 6) while station (2, 3, 5 and 7) shows significant changes and southwest monsoon had the greatest impact on the whole stations, particularly in characterizing the rainfall pattern of the area. During this season, the study area could be considered as the wettest region since all rainfall indices tested are higher than in other neighboring state of the Peninsula. Otherwise, the northwest of the area is denoted as the driest part of the state during the northeast monsoon period. The northwest of the state is less influenced by the northeast monsoon because of the existence of the Titiwangsa Range, which blocks some part of the region from receiving heavy rainfall. On the other hand, it is found that the areas with lowlands are strongly characterized by the northeast monsoonal flow.The results of the Mann-Kendall test, shows that, trends of the total amount of rainfall during the southwest monsoon decrease at some of the stations. The rainfall intensity increases in contrast, increasing trends in the total amount of rainfall were observed at three stations during the northeast monsoon, which give rise to the increasing trend of rainfall intensity. The results for the combined stations in both seasons indicate that there are no significant changes in trends during the extreme events for the Terengganu Malaysia. However, a smaller number of significant trends were found for extreme intensity.
... Kepekatan logam berat di dalam tumbuhan mengikut kepekatan menurun adalah Ni>Co>Cd>P... more ... Kepekatan logam berat di dalam tumbuhan mengikut kepekatan menurun adalah Ni>Co>Cd>Pb>Zn. Kepekatan logam di dalam bahagian-bahagian tumbuhan tidak menunjukkan perbezaan signifikan bagi semua logam. ... 6. Harpenden. Brooks, RR 1977. ...
... RAZI IDRIS, ZULFAHMI ALI RAHMAN, TUKIMAT LIHAN, MUHD BARZANI GASIM, MOHD NIZAM M. SAID &a... more ... RAZI IDRIS, ZULFAHMI ALI RAHMAN, TUKIMAT LIHAN, MUHD BARZANI GASIM, MOHD NIZAM M. SAID & KANG LING XING ... kompleks yang dilengkapi dengan infrastruktur, utiliti dan prasarana yang lengkap meliputi kemudahan peralatan dan ruang makmal, serta ruang ...
This study aims to investigate the spatial variation in the source of air pollution, identify the... more This study aims to investigate the spatial variation in the source of air pollution, identify the percentage contribution of each pollutant and apportion the mass contribution of each source category using chemometric techniques. Hierarchical agglomerative cluster analysis (HACA) successfully grouped the five air monitoring sites into three groups (cluster 1, 2 and 3). Principal component analysis (PCA) was used to spot out the sources of air pollution which are attributed to anthropogenic activities. Multiple linear regression (MLR) was used to develop an equation model that explains the contribution of pollutants in each cluster. However, it was observed that particulate matter (PM10) and Ozone (O3) are the most significant pollutants influencing the value of air pollutant index (API). Meanwhile, the source apportionment indicates that cluster 1 is influenced by gas and non-gas pollutants to a degree of 84%, weather condition 15% and 1% by gas and secondary pollutants. Cluster 2 is affected by gas and secondary pollutants to a tune of 87% and 13% by weather condition while cluster 3 is apportioned with 98% secondary gas and non-gas pollutants and 2% weather condition. This study reveals the usefulness of chemometric technique in modeling and reducing the cost and time of monitoring redundant stations and parameters.
Rivers is one of the complex natural systems. Classification of the river plan change is very imp... more Rivers is one of the complex natural systems. Classification of the river plan change is very important to know the river problems in early stage, where the classification database can help to understand the behavior of the river in each part. This article discusses about the classification of river plan change at the mainstream of Pahang River, Malaysia. Based on Geographical Information System (GIS) and Remote Sensing (RS) database, analysis of Types Of Lateral Activity (TYLAT) method and Modes of Meander Movement (MOME) method have been used to identify the evolution of the river plan change. The study results indicated, methods of TYLAT are more suitable to use for examining the evolution of river plan change for large and width rivers. While, method of analysis MOME index is more suitable for smaller types of rivers as the upper and middle reaches of the river. From this result, this study can be produced the basic information or database to understanding the characteristics or behavior parts in parts of the main Pahang River. This result also is very important to local authorities to know the early river problems in this area.
Jinjang River is a branch of the Klang River, which today suffers from a decline in water quality... more Jinjang River is a branch of the Klang River, which today suffers from a decline in water quality resulting from agricultural and development activities. A study on the water quality of Jinjang River was conducted in both June and October 2011. The purposes of the study were to determine the water quality of Jinjang River based on physicochemical and biological parameters and to classify the Jinjang River based on National Water Quality Standards (NWQS) and the Water Quality Index (WQI). A total of five sampling stations were selected along the river; two stations (S1 and S2) represented the upstream region and another three stations (S3, S4, and S5) represented the downstream region of the river. Fourteen water-quality parameters were selected. As a result of the analysis, Jinjang River was categorized as a slightly polluted river (WQI) and was classified as Class III. The result, compared with the NWQS, showed that most of the water-quality parameters studied ranged from Class I to Class IV, except for biological parameters (Escherichia coli), which were classified as Class V. This indicates that the river was extremely contaminated with fecal coliform bacteria (E. coli).
A study of water quality was carried out at selected rivers in Cameron Highlands. The procedure w... more A study of water quality was carried out at selected rivers in Cameron Highlands. The procedure was carried over four sampling periods; namely March, June, September and December 2007. The objective of the study was to analyze the water quality at 15 sampling stations. The water at 6 of the sampling stations was classified as clean water and was used
The Semenyih River is one of the most important rivers in Selangor, Malaysia, because it function... more The Semenyih River is one of the most important rivers in Selangor, Malaysia, because it functions as a resource for domestic water supply, fishing, and recreation. It has been adversely affected by urban and industrial wastes since the early 1990s. This study assessed the contamination status of the Semenyih River based on the National Water Quality Standards for Malaysian rivers (NWQS) and the national Water Quality Index (WQI) classifications. Although 10 of the waterquality parameters were within the recommended levels for the NWQS, levels of phosphate (PO4), E. coli, and total coliform bacteria were found to exceed the threshold. The Semenyih River is polluted by human activities from its upstream section (contamination by E. coli, coliform bacteria, and PO4) and is therefore characterized as Class III based on NWQS classificationBased on WQI, the Semenyih River was classified as slightly polluted and placed in Class II for Malaysian rivers at all sampling stations except stati...
This study investigated the pattern and trends of the daily rainfall data in Terengganu Malaysia ... more This study investigated the pattern and trends of the daily rainfall data in Terengganu Malaysia based on seasonal rainfall indices. The statistics of rainfall indices were calculated in terms of their means for seven stations in Terengganu Malaysia for the period 2000 to 2012. The findings indicate that the trend in the study area has no significant changes in stations (1, 4 and 6) while station (2, 3, 5 and 7) shows significant changes and southwest monsoon had the greatest impact on the whole stations, particularly in characterizing the rainfall pattern of the area. During this season, the study area could be considered as the wettest region since all rainfall indices tested are higher than in other neighboring state of the Peninsula. Otherwise, the northwest of the area is denoted as the driest part of the state during the northeast monsoon period. The northwest of the state is less influenced by the northeast monsoon because of the existence of the Titiwangsa Range, which block...
Abstract: Pahang River is the main channel to drain off water from the inundated area of Pahang B... more Abstract: Pahang River is the main channel to drain off water from the inundated area of Pahang Basin to the South China Sea during wet season which is caused by the northeast monsoon. Most of the inundations of lower areas of Pahang River Basin were caused by ...
A study of water quality was carried out at selected rivers in Cameron Highlands. The procedure w... more A study of water quality was carried out at selected rivers in Cameron Highlands. The procedure was carried over four sampling periods; namely March, June, September and December 2007. The objective of the study was to analyze the water quality at 15 sampling stations. The water at 6 of the sampling stations was classified as clean water and was used as the water source by the local settlements while the water at the others stations was considered contaminated because of various human activities. Water quality parameters such as pH and Dissolved Oxygen (DO) were measured in-situ using the YSI 556 multi parameters. The levels of Biological Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Total Suspended Solids (TSS) and ammonia nitrogen (NH3-N) were analyzed using the APHA and HACH methods. Results of the analysis were standardized with the Water Quality Index (WQI). During the rainy season (Dicember 2007) some of water quality parameters increased, for example: the Total Suspended...
Development and effective utilization of groundwater resources is essential especially in semi-ar... more Development and effective utilization of groundwater resources is essential especially in semi-arid region and in a region with abundant rainfall such as the study area for activities such as water supply and irrigation. The present study aims to analyse statistically the groundwater level, stream flow and rainfall data of 13years (2000- 2012) collected from the Department of Minerals and Geosciences and Department of Irrigation and Drainage Terengganu for the seven stations: Besut, Dungun, Kemaman, Bukit, Paka, Cherul and Menerong of Terengganu Malaysia. The homogeneity test was made to make sure that all the series of data are homogenous. The regression analysis method was adapted to analyses the relationship of groundwater level variability with the rainfall distribution. The analysis indicated that the rainfall distribution has an influence on groundwater level in the study area due to positive relationship shown by regression analysis. Although in some stations the influence is not much significant, that is the groundwater levels depends on runoff and other factors rather than rainfall. Such stations are Site 4930401 SG. Berang at Menerong shows 14.7%, Site 4232401 SG. Kemaman shows 27.2 %, and Site 4732461 SG. Paka shows 35.2%. The station that shows great influence of rainfall in determining the groundwater level is Site 5229436 SG Nerus, which has 58.5%, while the remaining stations are moderate. Therefore Vector Error Correction Model were employed after the introducing of stream flow data to test and confirmed this relationship, and were found to be strong as indicated by the result of the analysis.
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Papers by Muhd Barzani Gasim
and in a region with abundant rainfall such as the study area for activities such as water supply and irrigation. The
present study aims to analyse statistically the groundwater level, stream flow and rainfall data of 13years (2000-
2012) collected from the Department of Minerals and Geosciences and Department of Irrigation and Drainage
Terengganu for the seven stations: Besut, Dungun, Kemaman, Bukit, Paka, Cherul and Menerong of Terengganu
Malaysia. The homogeneity test was made to make sure that all the series of data are homogenous. The regression
analysis method was adapted to analyses the relationship of groundwater level variability with the rainfall
distribution. The analysis indicated that the rainfall distribution has an influence on groundwater level in the study
area due to positive relationship shown by regression analysis. Although in some stations the influence is not much
significant, that is the groundwater levels depends on runoff and other factors rather than rainfall. Such stations
are Site 4930401 SG. Berang at Menerong shows 14.7%, Site 4232401 SG. Kemaman shows 27.2 %, and Site
4732461 SG. Paka shows 35.2%. The station that shows great influence of rainfall in determining the groundwater
level is Site 5229436 SG Nerus, which has 58.5%, while the remaining stations are moderate. Therefore Vector
Error Correction Model were employed after the introducing of stream flow data to test and confirmed this
relationship, and were found to be strong as indicated by the result of the analysis.
and in a region with abundant rainfall such as the study area for activities such as water supply and irrigation. The
present study aims to analyse statistically the groundwater level, stream flow and rainfall data of 13years (2000-
2012) collected from the Department of Minerals and Geosciences and Department of Irrigation and Drainage
Terengganu for the seven stations: Besut, Dungun, Kemaman, Bukit, Paka, Cherul and Menerong of Terengganu
Malaysia. The homogeneity test was made to make sure that all the series of data are homogenous. The regression
analysis method was adapted to analyses the relationship of groundwater level variability with the rainfall
distribution. The analysis indicated that the rainfall distribution has an influence on groundwater level in the study
area due to positive relationship shown by regression analysis. Although in some stations the influence is not much
significant, that is the groundwater levels depends on runoff and other factors rather than rainfall. Such stations
are Site 4930401 SG. Berang at Menerong shows 14.7%, Site 4232401 SG. Kemaman shows 27.2 %, and Site
4732461 SG. Paka shows 35.2%. The station that shows great influence of rainfall in determining the groundwater
level is Site 5229436 SG Nerus, which has 58.5%, while the remaining stations are moderate. Therefore Vector
Error Correction Model were employed after the introducing of stream flow data to test and confirmed this
relationship, and were found to be strong as indicated by the result of the analysis.