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Heavy Metal Distribution in Surface Water and Sediment of Megech River, a Tributary of Lake Tana, Ethiopia

Author

Listed:
  • Flipos Engdaw

    (Department of Water, Atmosphere and Environment, Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, 1180 Vienna, Austria
    Department of Biology, College of Natural and Computational Sciences, University of Gondar, Gondar 6200, Ethiopia)

  • Thomas Hein

    (Department of Water, Atmosphere and Environment, Institute of Hydrobiology and Aquatic Ecosystem Management, University of Natural Resources and Life Sciences, 1180 Vienna, Austria
    Wasser Cluster Lunz, Biologische-Station, 3293 Lunz am See, Austria)

  • Getachew Beneberu

    (Department of Biology, College of Science, Bahir Dar University, Bahir Dar 6000, Ethiopia)

Abstract

Excess heavy metal concentrations caused by severe anthropogenic activities are among the major threats of aquatic pollution in developing countries like Ethiopia. So far, there is limited information regarding concentrations of selected toxic heavy metals in the freshwater bodies of northern Ethiopian highlands. Therefore, this study aimed to assess the current status and spatial distributions of heavy metals in water and sediment samples of the Megech River located in the North Gondar zone of the Amhara region from November 2018 to January 2019. Six different sampling sites (M1–M6) were identified based on the anthropogenic influence. A total of 30 water and 30 sediment samples were collected along the course of the river. Results revealed that concentrations of Cu (0.11 to 0.17 mg L −1 ), Zn (0.11 to 0.16 mg L −1 ) and Cr (0.03–0.05 mg L −1 ) in the water were within international guidelines for domestic use. In the sediment, maximum concentrations of heavy metals detected at site M2 were within the recommended sediment quality guideline for aquatic systems. Generally, higher concentrations of heavy metals were observed at sites with higher anthropogenic activity (M2). Therefore, continuous monitoring and seasonal studies with representative samples including benthic organisms and macrophytes are needed to quantify the impact on downstream sections.

Suggested Citation

  • Flipos Engdaw & Thomas Hein & Getachew Beneberu, 2022. "Heavy Metal Distribution in Surface Water and Sediment of Megech River, a Tributary of Lake Tana, Ethiopia," Sustainability, MDPI, vol. 14(5), pages 1-16, February.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:5:p:2791-:d:760047
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    References listed on IDEAS

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    1. Shewit Gebremedhin & Abebe Getahun & Wassie Anteneh & Stijn Bruneel & Peter Goethals, 2018. "A Drivers-Pressure-State-Impact-Responses Framework to Support the Sustainability of Fish and Fisheries in Lake Tana, Ethiopia," Sustainability, MDPI, vol. 10(8), pages 1-20, August.
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