Open AccessCharacteristics of Pergau Reservoir Water Quality Profile
Author(s) -
Alyaa Filza Effendi,
Ayuni Samsul Bahri,
Aieur Nadira Roslan,
Muhammad Zulsyahmi Rosli,
Noorshariza Azura Shahbodin,
Muhammad Ardiansyah Al Faiz,
Mohd Faiz Mohd Amin,
Amir Shah Ruddin Md Sah,
Shuib Husin
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.179
H-Index - 26
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/549/1/012008
Subject(s) - water quality , biochemical oxygen demand , turbidity , chemical oxygen demand , total suspended solids , total dissolved solids , environmental science , lake ecosystem , hydrology (agriculture) , ammoniacal nitrogen , suspended solids , anoxic waters , alkalinity , environmental chemistry , chemistry , environmental engineering , wastewater , ecology , ecosystem , biology , geology , geotechnical engineering , organic chemistry
Water quality profile of Pergau Reservoir or also known as Sultan Ismail Petra Hydroelectric Reservoir has been conducted from 28 th October to 3 rd November 2019 during Pergau scientific expedation 2019. Three (3) lentic sampling stations (P1, P2 and P3) were selected with eleven (11) water parameters such as water temperature, pH, biological oxygen demand (BOD), chemical oxygen demand (COD), total suspended solid (TSS), total dissolved solid (TDS), dissolved oxygen (DO), turbidity, ammonical-nitrogen, oil and grease (O&G), and total coliform were analyzed for water quality status of Pergau Lake. Stratification profile of DO, pH and water temperature were recorded by 10m depth at all lentic stations. Generally DO, temperature and pH reading at the surface lentic sampling stations ranging between 7.11 to 9.21 mg/L, 27 to 27.5 °C and 7.50 to 8.72, respectively. Anoxic layer was detected at depth of 9 m at P1 whereas 3 m at P2 and P3. Profiling of DO, pH and water temperature shown decreased pattern when the water depth increased. Others parameters such as COD at the subsurface were ranged from 1.3 to 1.4 mg/L, TSS reading recorded ranged from 4.00 to 6.80 mg/L, ammoniacal-nitrogen ranged from 0.05 to 0.07 mg/L whereas BOD5 were ranged from 1.3 to 1.4 mg/L. The Department of Environment – Water Quality Index (DOE-WQI) classification was used to assess the water quality status of the selected sampling locations. The results showed that all locations fall under Class I ranged between 92.66 to 94.55% and in summary the area can be classified as clean and suitable for sensitive aquatic organisms.