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Water Quality Modeling of Rice-Irrigated Obina River Basin, Uzo-Uwani

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Abstract

Obina-river basin, 1000 hectares in areal extent in Uzo-Uwani Local Government Area (LGA), Enugu state, Nigeria featuring rice-irrigated farming has been studied for river pollution modeling. Effects of fertilizer and pesticide applications plus wastes due to animal husbandry in the area accounted for the chemical and microbial pollution of Obina river through irrigation return flows. Data analysis and mathematical modeling of water quality constituents at the downstream points of Obina river, 7.5 km stretch; and the irrigation canal, 6.6 km stretch, respectively, indicate the following: (i) consistent time-trends in degree of pollution; (ii) linear relationship for models of chemical constituents against chlorides, and models of water-related diseases against microbial constituents; and (iii) non-linear relationship for chemical constituents against total dissolved solids, TDS. Application of computer program on multiple regression to the data yielded values of models' coefficients and those of correlation coefficients in the range of 0.63 to 0.99. Also, the plots of the regression models helped to confirm positive relationships between variables. Models are of great utility in the area of water quality monitoring and forecasting.

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References

  • American Chemical Society: 1969, Cleaning our Environment for Chemical Basis for Action, Published by John Wiley, Washington, D.C.

    Google Scholar 

  • Davis, J. C.: 1973, Statistics and Data Analysis in Geology, 1st Ed., Published by John Wiley& Sons, New York.

    Google Scholar 

  • Dykhanov, N. N.: 1989, J. of Water Resource, USSR 5, 97.

    Google Scholar 

  • Keys, J. W.: 1981, J. of Irrigation and Drainage Div. 107, 331.

    Google Scholar 

  • Nwaogazie, I. L.: 1990, Nig. J. of Techn. Research 2, 49.

    Google Scholar 

  • Nwaogazie, I. L.: 1991, The Nig. Engineer. 26, 57.

    Google Scholar 

  • Nwaogazie, I. L.: 1992, Environmental Software 7, 103.

    Google Scholar 

  • Lenin Jesse et al.: 1971, J. of Adv. Environmental Sc. and Tech. 2, 215.

    Google Scholar 

  • Ogelle, C.: 1994, ‘Pollution Control and Management of Obina River, Uzo-Uwani’, Masters of Engrg. Mgt., MEM Thesis Report, Univ. of Port Harcourt, Nigeria.

    Google Scholar 

  • Ottaway, J. H.: 1980, The Biochemistry of Pollution, Published by Edward Arnold, London.

    Google Scholar 

  • Pisano, M.: 1976, J. of Environ. Eng. 102, 555.

    Google Scholar 

  • Richard, Y. et al.: 1980, J. of Prog. Water Techn. 12, 173.

    Google Scholar 

Download references

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Authors and Affiliations

  1. Department of Civil Engineering, University of Port Harcourt, P.M.B. 5323, Port Harcourt, P.O. Box 156, Choba, Nigeria

    Ify L. Nwaogazie & Emeka Ogelle

Authors
  1. Ify L. Nwaogazie
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  2. Emeka Ogelle
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Nwaogazie, I.L., Ogelle, E. Water Quality Modeling of Rice-Irrigated Obina River Basin, Uzo-Uwani. Water, Air, & Soil Pollution 100, 197–212 (1997). https://doi.org/10.1023/A:1018363205367

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  • DOI: https://doi.org/10.1023/A:1018363205367

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