1Uyi Hanson;2Sabina Alatari Ngodigha; Anthati Sreenivasulu3, Dr.G.Yadagiri4 and Nanee SuanuDeekae5
Abstract
:The water quality of any aquatic ecosystem is very important as it determines the ditribution, composition and abundance of organisms. Physical and chemical properties of Orashi River were assessed between October 2017 and September 2019 from five sampling stations to determine the physical and chemical characteristics of the river. Temperature, pH, Salinity, DO, EC, TDS and Turbidity were measured in-situ in the field using Extech water checker. Water samples collected were analysed for other parameters. Temperature ranged between 27 oC to 29.4 oC, pH was between 6.10 – 7.96 while EC was 18 – 48.8μS/cm. TDS ranged from 10.02 – 25.18 mg/l while Turbidity ranged from 8.50 – 107.7Ntu. Salinity ranged from 0.01 – 0.02psu. The value of 6.01 – 7.88mg/l was recorded for DO while 2.06 – 3.99mg/l was recorded for BOD. THC was0.00 – 4.30mg/l and 3 – 9mg/l for TA. Nitrate 0.05 – 0.95mg/l,Sulphate 2.10 – 10.31mg/l while Phosphate was < 0.05mg/l across all stations. The results from this study when compared with National Environmental Standards and Regulations Enforcement Agency (NESREA) standard suggest an ecosystem with minimal influence from human activities in the area.
Keywords:
:field, parameters, season, variation, water
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