Catchment scale assessment of macroplastic pollution in the Odaw river, Ghana

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Catchment-scale plastic pollution assessments provide insights in its sources, sinks, and pathways. We present an approach to quantify macroplastic transport and density across the Odaw catchment, Ghana. We divided the catchment into the non-urban riverine, urban riverine, and urban tidal zones. Macroplastic transport and density on riverbanks and land were monitored at ten locations in December 2021. The urban riverine zone had the highest transport, and the urban tidal zone had the highest riverbank and land macroplastic density. Water sachets, soft fragments, and foam fragments were the most abundant items. Our approach aims to be transferable to other catchments globally.

Original languageEnglish
Article number115813
JournalMarine Pollution Bulletin
Publication statusPublished - Jan 2024


  • Catchment
  • Hotspot
  • Land
  • Macroplastic pollution
  • River
  • Riverbank


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