Context of the project
The hydroelectric project on the Jiji and Mulembwe rivers requires a specific plan to manage water and sediments. This plan must include an analysis of soil erosion, landslides and stream stabilisation. The aim is to develop appropriate methods to protect the project's watersheds and infrastructure during the operational phase. SHER has been commissioned to carry out this study, which aims to plan measures to control erosion and stabilise watercourses in the areas affected by the project, taking into account the natural environment in the hydrographic network and surrounding slopes.
This mission was carried out in two phases:
- First, a multi-disciplinary diagnosis of the existing situation and a proposed intervention strategy.
- A second phase devoted to proposing concrete, detailed measures to protect the infrastructures against sedimentation and landslides.
Based on the risks identified, the study developed a plan to preserve the soil, focusing on improving agricultural practices at the level of individual farms, cooperatives and various impacts on watersheds such as mines and forestry companies. Prevention and treatment measures have been proposed to counteract localised erosion such as landslides, gullies and erosion of riverbanks and roads. A special protection zone was also recommended for reservoirs in order to control bank erosion and reduce sediment ingress.
The protection programme also established detailed monitoring procedures for the dynamics of erosion in the two watersheds in order to identify the necessary preventive actions on a regular basis. Finally, the study drew up a detailed proposal for the strategic implementation of the recommended measures.
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