• Opololaoluwa Oladimarum Ogunlowo Department of Civil Engineering, Faculty of Engineering, Federal University Otuoke, Otuoke, Bayelsa State, Nigeria
  • Churchill Ebinimitei Simon Department of Civil Engineering, Faculty of Engineering, Federal University Otuoke, Otuoke, Bayelsa State, Nigeria
Keywords: Dredging, Downstream, Upstream, Water Quality, Turbidity, Ekole Creek


Water is essential part of ecosystem, so its quality must be ascertained for use especially in Ekole creek of Nigeria where dredging activities is heavy, hence this study examined the dredging effect on the downstream water quality of Ekole creek. Water samples were collected from four points which are; Upstream, Dredge I, Dredge II, and Downstream points. The parameters of the water quality determined showed that Turbidity and Total Suspended Solids (TSS) were higher at the Downstream point with values of 31 NTU and 1664 mg/l respectively; pH was also slightly acidic (6.61); but low in Total Dissolve Solid (TDS), Electrical Conductivity,  Nitrate (NO3) and Dissolved Oxygen (DO), as compare to the Upstream. The values of the  heavy metals like Pb (3.845 mg/l), Cr (0.612 mg/l) Ni (0.104 mg/l) and Cu (0.128 mg/l),  at Downstream point, were above Pb (3.0605 mg/l), Cr (0.0 mg/l), Ni (0.017 mg/l) and Cu (0.102 mg/l) of  the Upstream point,before the Dredging points I and II, that have  correlative matrix of(Pb>Fe>Mn>Zn>Cu>Ni>Cr) and  Pb>Fe>Cr>Mn>Zn>Cu>Ni Downstream point. Is discovered the Downstream water is slightly acidic, high in Turbidity and TSS, but low in TDS, EC, NO3 and DO, as against the WHO drinking-water quality, due the effect of dredging on the water quality of the Ekole Creek. It is inferred that the dredging activities have negative effects on the water quality, which can be hazardous to the health of downstream user, and distort the ecosystem; therefore the commercial dredging activities should be checked in Ekole creek.


Download data is not yet available.


Edith I. Mbah, Stella N. Ibe and Gideon O. Abu (2017). Water Quality Assessment of the Freshwater Ecosystem at Communities' Points-Of-Use in Yenagoa Metropolis of Bayelsa State, Nigeria, Research Journal of Pure Science and Technology Vol. 1(1) 15-22. Retrieved from https://iiardpub.org/get/RJPST/VOL%201/WATER%20QUALITY%20ASSESSMENT.pdf

Fondriest Environmental Leaning Centre, Water Quality (2021), Retrieved from www.fondriest.com access on 24/09/2021

Garg, S.K. (2010). Hydrology and Water Resources Engineering. Vol.1, Khanna Publishers, New delhi India. Pp 45.

Iyama, W. A., (2005). Development of Water Quality Index for the Imonite Creek Water in Ndoni, Nigeria. Unpublished M.Phil. Thesis, Institute of Geosciences and Space Technology, Rivers State.

Iyama, W. A., Edori O S (2014). Seasonal Variation in Water Quality During Dredging of Brackish Water Habitat in the Niger Delta, Nigeria, Trends in Applied Sciences Research. DOI: https://doi.org/10.3923/tasr.2014.153.159

Jones, A. R., (1986). The Effects of Dredging and Spoil Disposal on Macrobenthos, Howkesbury Estuary N.S.W. Mar. Prog., 21 :292- 311.

Nick, B. and Marsha, C. (2010). Dredging for Development: A Joint Publication of International Association of Dredging Companies (IADC) and International Association of Ports and Harbors (IAPH), (6th Edition), The Hague, Netherlands. Pp 10-11,52, 43

Odukoya, O.O. Arowolo, T.A and Bamgbose, O. (2002). Effect of Solid Waste Landfill on Underground and Surface Water Quality at Ring Road. Ibadan, Nigeria, Global Journal of Environmental Sciences, 1 : p.43-52. Retrieved from https://doi.org/10.4314/gjes.v1i1.2396 DOI: https://doi.org/10.4314/gjes.v1i1.2396

Reddeppna, P., (2001). The solution to Universal Water Needs. Waterfront Publications, 1, (1) : 11-14.

Seiyaboh, E.I., Ogamba, E.N. and 2Utibe, D.I. (2013). Impact of Dredging on the Water Quality of Igbedi Creek, Upper Nun River, Niger Delta, Nigeria Journal Of Environmental Science, Toxicology And Food Technology. Volume 7 (5) 51-56. Retrieved from https://doi.org/10.9790/2402-0755156 DOI: https://doi.org/10.9790/2402-0755156

Turner, R. E and Streever, B., (2002). Approaches to Coastal Restoration: Northern Gulf of Mexico. SPA Academic Publication. The Hague, Netherlands.

Warren, L.T. (1981). Environmental Pollution. Environmental International Journal Series B, USA.

WHO (2017). Guidelines for Drinking-Water Quality. Incorporating First Addendum, 4th ed. Vol. 1, World Health Organization, Geneva.

How to Cite
Ogunlowo, O. O., & Simon, C. E. (2021). EFFECTS OF DREDGING ON DOWNSTREAM WATER QUALITY: EKOLE CREEK, NIGERIA. International Journal of Engineering Technologies and Management Research, 8(12), 17-25. https://doi.org/10.29121/ijetmr.v8.i12.2021.1078