Microbial Assay of Otamiri River and Its Sediments in Parts of Owerri

Ahiarakwem, C. A.; Ibeneme, Sabinus Ikechukwu; Chinemelu, E. S.; Ukwajiunor, Judith Ifeanyi; Abiahu, Chidimma Maria; Poopola, John Olalekan

doi:10.4236/gep.2019.78011

Cited by 7 publications

(15 citation statements)

References 3 publications

(3 reference statements)

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“…In the sediment however, Streptococcus, Pseudomonas, Klebsiella,, Acinetobacter seifertii, Bacillus and Escherichia coli were isolated. These isolates have been reported by previous authors that have worked in the river and its sediment [63][64][65]. Among the isolates from the river, Serratia marcescens (SerEW01) recorded the highest percentage occurrence of 33.33%, followed by Staphylococcus and Streptococcus species (22.2%).…”

Section: Discussionsupporting

confidence: 64%

Physicochemical and Bacteriological Qualities of Otamiri River Water and Sediment in South Eastern Nigeria

Nwoye¹,

Ifeyinwa²

2020

FEM

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The bacteriological, physicochemical and anionic surfactants qualities of Otamiri river water and sediment were analysed, using standard techniques. The bacteriological analyses revealed the presence of Serratia marcescens (SerEW01) (33.33%), Staphylococcus (22.20%), Streptococcus (22.20%), Enterobacter (11.11%), Escherichia coli (11.11%) in Otamiri river water as well as Acinetobacter seifertii (42.10%), Bacillus (15.80%), Escherichia coli (15.80%), Klebsiella (10.53%) and Streptococcus species (5.30%), in the sediment. Some of these bacteria are indicators of fecal contamination of the river water. Iron recorded the highest value among the heavy metals (1.972 mg/l), in the river water while Co was not detected. Also, Pb, Cd, Ni, Hg, electrical conductivity and turbidity recorded values higher than WHO standards for drinking water. In the sediment, Fe and Cd had the highest and least values 19.82 and 0.025 mg/kg respectively. The pH of the river and sediment were 6.42 and 5.40. Similarly, among the anionic surfactants, sodium dodecyl sulfate (SDS) was the highest in both Otamiri river water (0.100 mg/l) and sediment (0.453 mg/kg), while perfluorobutane sulfate was not detected in the river water. These results imply that the quality of Otamiri river water and possibly the sediment are below the WHO recommendations for drinking water. People using the river water for drinking and other domestic activities should therefore purify it adequately to avert possible health hazards.

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Section: Discussionsupporting

confidence: 64%

Physicochemical and Bacteriological Qualities of Otamiri River Water and Sediment in South Eastern Nigeria

Nwoye¹,

Ifeyinwa²

2020

FEM

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“…It lies within the latitude 5 o 18' 00'' to 5 o 30' 00'' N and longitude of 6 o 50' to 7 o 10' 00'' E. The Otanmiri River has a source from Owerri timber and runs from Egbu where it confluences with Nworie River. It moves down through Nekede to Ozuzu in Etche town of Rivers State where it combines with the Imo River and flows to the south into the Atlantic Ocean [40]. The geology of the area shows that the Benin Formation (which is an extensive stratigraphic unit in the Southern Nigeria) underlies it.…”

Section: Geographical Location and Geologic Setting Of Otamiri Rivermentioning

confidence: 99%

“…The geology of the area shows that the Benin Formation (which is an extensive stratigraphic unit in the Southern Nigeria) underlies it. According to Fagorite et al [40], the thickness of the Benin Formation is variable. On land, the Benin Formation is covered by the Oligocene-Miocene, Ogwashi-Asaba Formation while the Petroleum bearing Agbada and Akata formation covers the subsurface layers [40,41].…”

Section: Geographical Location and Geologic Setting Of Otamiri Rivermentioning

confidence: 99%

“…According to Fagorite et al [40], the thickness of the Benin Formation is variable. On land, the Benin Formation is covered by the Oligocene-Miocene, Ogwashi-Asaba Formation while the Petroleum bearing Agbada and Akata formation covers the subsurface layers [40,41]. The sediments are upper deltaic plain deposits; the sands contain braided streams, point bars and channel-fills, while the thin shale intercalations are mainly back-swamp deposits.…”

Section: Geographical Location and Geologic Setting Of Otamiri Rivermentioning

confidence: 99%

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Machine Learning Based Prediction of Urban Flood Susceptibility from Selected Rivers in a Tropical Catchment Area

Ekwueme

2022

Civ Eng J

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Unexpected flood due to climate change has caused tremendous damage to both lives and properties, especially in tropical areas. Nigeria Southeastern region has been devastated by flood from extreme weather conditions. Flood mitigation involves accurate forecasting, precise prediction, evaluation, and intervention strategy. This study aims at using machine learning solutions to investigate and predict flood susceptibility from selected rivers in the south-eastern region of Nigeria. The regional hydrogeological data from 1981–2019 was collected and analysed. The remote sensing datasets from the National Aeronautics and Space Administration (NASA), Modern-Era Retrospective Analysis for Research and Applications (MERRA) version 2 & 3 platforms from five selected rivers were processed. With the data output of the hydrology, streamline flows, and exposed geology, the ARIMA model was built and used to forecast the flood. The result shows that the flooding pattern would increase by 15-150% within 2020-2024. The forecast indicated that within five years, the river discharge for Adada, Ajali, Imo, Ivo, and Otanmiri will increase within ranges 200-702 m3s-1, 16-26 m3s-1, 508-1280 m3s-1, 43-68.5 m3s-1, and 22-35.1 m3s-1 respectively. Climate change has impacted severely on flood in the region. This knowledge will help the regional agencies and authorities in adapting to flood innuendoes and assessment of hydrologic extremes. Doi: 10.28991/CEJ-2022-08-09-08 Full Text: PDF

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“…Water pollution is a major challenge facing developing countries such as Nigeria [2][3][4][5]. Water pollution occurs when unwanted materials with potentials to threaten human and other natural systems find their ways into rivers, lakes, wells, streams, boreholes or even reserved fresh water in homes and industries [6]. There are numerous scientific and economic evidence such as industrial production, recreational activities that water pollution can cause severe decrease in productivity and deaths of living species and subsequent alteration of ecosystem services [7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Assessment of Microbial Load in Water and Sediments of Rivers Otamiri and Nworie in Owerri, South Eastern Nigeria

Kelechi

Nnawuike²,

Kelechi

et al. 2021

IJPR

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Water pollution is a global problem. The study was carried out to assess the microbial constituents in water and sediment of Rivers Otamiri and Nworie during dry and rainy seasons (March and September, 2020) with comparison to WHO benchmark for drinking water .Samples were randomly collected at six (6) sampling points and analyzed using routine microbiological protocols. The results revealed detectable amount of microbial activates in surface water of both rivers during the dry and rainy season. During the rainy season, a THB bioload average of 2.02x104 and 5.1x104CFU/mL for Nworie and Otamiri river respectively were measured. For the TCC, the average was 9.8x103 and 2.5x104 CFU/mL, while in the dry period there was corresponding reduction in the bioload value for both rivers. THB average value for Nworie river was 1.34x104 CFU/mL, with corresponding 3.5x104 values for Otamiri river, while in same inclination, TCC measured 6.1x103 and 1.8x104 CFU/mL. There were noteworthy variations in the values for the two rivers as well as in the two seasons. TBC value for Otamiri measured about 1.5 folds than the value for Nworie. In same trend, TCC value for Nworie measured about 39%. All values measured were above WHO permissible limit for drinking water. The biochemical and cultural features of the isolated microorganism in water showed the presence of E. coli identified in the entire stations (100%), Salmonella and faecal coliform occurred 83.3% each, while Vibrio and Shigella were detected in 4 of the 6 stations. The mean total bacterial count, total coliform count and total E. coli, were not in conformity with World Health Organization (WHO) Standard for drinking water and thus constitute a threat to the River; these were attributed to indiscriminate waste dumps around the rivers. The study underscores the need for adequate waste management system to forestall outbreak of pathogenic diseases in the area.

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Microbial Assay of Otamiri River and Its Sediments in Parts of Owerri

Cited by 7 publications

References 3 publications

Physicochemical and Bacteriological Qualities of Otamiri River Water and Sediment in South Eastern Nigeria

Physicochemical and Bacteriological Qualities of Otamiri River Water and Sediment in South Eastern Nigeria

Machine Learning Based Prediction of Urban Flood Susceptibility from Selected Rivers in a Tropical Catchment Area

Assessment of Microbial Load in Water and Sediments of Rivers Otamiri and Nworie in Owerri, South Eastern Nigeria

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