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<p>Riverbank erosion and accretion are currently the most frequently occurring natural disasters along the Nile River, posing socio-economic as well as environmental losses for the neighbouring areas. This study assessed the extent of erosion and accretion along the Sudan-Nile River stretch for three towns, explicitly Dongola, Berber, and Es-Sileit, downstream of the Khartoum confluence. The study utilised Landsat satellite imagery and geospatial techniques to conduct the assessment from 1993 to 2023. Results from the study revealed that Berber demonstrated the highest average rate of erosion and accretion at 60.12 hectares/year and 49.91 hectares/year, respectively, trailed by Es-Sileit. The Dongola site presented the lowest rates of erosion and accretion at 23.25 hectares/year and 32.53 hectares/year, respectively. Erosion was more prominent than accretion in Berber and Es-Sileit, with a net land loss of 316.5 and 198.9 hectares, respectively. Dongola experienced more accretion than erosion, with a net land gain of 287.6 hectares. Additionally, the impacts of erosion and accretion on achieving the Sustainable Development Goals (SDGs) were established, along with several sustainable mitigation actions. This study further identified the synergies between geospatial technological monitoring of erosion and accretion and numerous socio-economic-environmental-allied targets of the SDGs. Therefore, the implementation of geospatial techniques in assessing erosion and accretion would significantly propel sustainable development by identifying zones susceptible to erosion, sediment accumulation, and flooding downstream of the Khartoum confluence, thus promoting practical infrastructural design planning and appropriate community distribution along the Nile Riverbank.</p> Graphical abstract <p></p>

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Coupling Geographic Information Systems and Remote sensing to evaluate riverbank erosion and accretion in an arid environment: A blueprint for sustainable transformation

  • 期刊论文

  • 发表日期：

    2025年1月6日

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  • Ezira Mbalibulha,
  • Ismail Ahmed Ismail,
  • Abdelkrim Khaldi,
  • Joseph Wasswa,
  • Denis Obura

摘要

Riverbank erosion and accretion are currently the most frequently occurring natural disasters along the Nile River, posing socio-economic as well as environmental losses for the neighbouring areas. This study assessed the extent of erosion and accretion along the Sudan-Nile River stretch for three towns, explicitly Dongola, Berber, and Es-Sileit, downstream of the Khartoum confluence. The study utilised Landsat satellite imagery and geospatial techniques to conduct the assessment from 1993 to 2023. Results from the study revealed that Berber demonstrated the highest average rate of erosion and accretion at 60.12 hectares/year and 49.91 hectares/year, respectively, trailed by Es-Sileit. The Dongola site presented the lowest rates of erosion and accretion at 23.25 hectares/year and 32.53 hectares/year, respectively. Erosion was more prominent than accretion in Berber and Es-Sileit, with a net land loss of 316.5 and 198.9 hectares, respectively. Dongola experienced more accretion than erosion, with a net land gain of 287.6 hectares. Additionally, the impacts of erosion and accretion on achieving the Sustainable Development Goals (SDGs) were established, along with several sustainable mitigation actions. This study further identified the synergies between geospatial technological monitoring of erosion and accretion and numerous socio-economic-environmental-allied targets of the SDGs. Therefore, the implementation of geospatial techniques in assessing erosion and accretion would significantly propel sustainable development by identifying zones susceptible to erosion, sediment accumulation, and flooding downstream of the Khartoum confluence, thus promoting practical infrastructural design planning and appropriate community distribution along the Nile Riverbank.

Graphical abstract