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<p>To address the pressing water needs of Algeria, the government has devised a strategy for developing water infrastructure and mobilizing surface water resources. At present, 81 dams are operating, yet they are rapidly silting up, resulting in an estimated loss of 68.25&#xa0;million tonnes/year. The Kramis dam, situated in the country’s northwestern region, has a storage capacity of 45.4&#xa0;million tonnes of water and represents a vital economic resource. The protection of the dam against erosion represents a pressing socio-economic objective. To achieve this, the RUSLE/GIS approach was employed to map the risk of erosion and to propose suitable and appropriate management based on land use. The results indicate a total annual loss of 832,500 tonnes, equivalent to an average loss of 27.8 t/ha/year. However, the primary causes of soil loss were soil fragility and a lack of vegetation cover. 89% of the study area requires the implementation of erosion control measures. It is estimated that implementing these improvements would result in a 91.4% reduction in the rate of sediment deposition in the dam, with an estimated deposition of 2.4 t/ha/year. However, despite the relevance of the approach used, certain limitations must be acknowledged. The erosion estimation relies on pedoclimatic data whose accuracy may vary locally. In addition, the vegetation cover index derived from satellite imagery is subject to uncertainties related to spatial and temporal resolution. Finally, the lack of continuous spatiotemporal field measurements for the direct validation of soil loss represents another potential source of uncertainty in the results obtained.</p>

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An Integrated Approach To Propose Erosion Control Measures Using the RUSLE Model and Geospatial Tools in the Wadi Kramis Catchment of north-west Algeria

  • 期刊论文

  • 发表日期：

    2026年2月20日

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  • Ahmed Benchettouh,
  • Youcef Fekir,
  • Sihem Jebari

摘要

To address the pressing water needs of Algeria, the government has devised a strategy for developing water infrastructure and mobilizing surface water resources. At present, 81 dams are operating, yet they are rapidly silting up, resulting in an estimated loss of 68.25 million tonnes/year. The Kramis dam, situated in the country’s northwestern region, has a storage capacity of 45.4 million tonnes of water and represents a vital economic resource. The protection of the dam against erosion represents a pressing socio-economic objective. To achieve this, the RUSLE/GIS approach was employed to map the risk of erosion and to propose suitable and appropriate management based on land use. The results indicate a total annual loss of 832,500 tonnes, equivalent to an average loss of 27.8 t/ha/year. However, the primary causes of soil loss were soil fragility and a lack of vegetation cover. 89% of the study area requires the implementation of erosion control measures. It is estimated that implementing these improvements would result in a 91.4% reduction in the rate of sediment deposition in the dam, with an estimated deposition of 2.4 t/ha/year. However, despite the relevance of the approach used, certain limitations must be acknowledged. The erosion estimation relies on pedoclimatic data whose accuracy may vary locally. In addition, the vegetation cover index derived from satellite imagery is subject to uncertainties related to spatial and temporal resolution. Finally, the lack of continuous spatiotemporal field measurements for the direct validation of soil loss represents another potential source of uncertainty in the results obtained.