Bangladesh: Jamuna-Meghna River Erosion Mitigation Project
The Jamuna-Meghna River Erosion Mitigation Project was developed to sustain economic growth and poverty reduction and to provide livelihood security in areas threatened by riverbank erosion. It sought to mitigate progressive riverbank erosion through the construction of riverbank protection, in response to the dynamic behavior and morphological changes of the Jamuna and Meghna rivers. The project introduced an adaptive approach: geotextile bags (geo-bags) were used to protect the riverbank in a phased manner, a new technical solution for Bangladesh. The project results demonstrated the cost effectiveness and functionality of the mitigation measures.
The evaluation assesses the project’s overall performance successful. It was relevant, effective, efficient, and less than likely sustainable. The evaluation offers the following lessons: (i) agreement of all project stakeholders on the use of an adaptive approach and on operation and maintenance (O&M) at the design stage is crucial for achieving project results, (ii) an adaptive approach can work effectively to mitigate riverbank erosion if it is executed to its full extent, and (iii) a riverbank erosion management system can play a crucial role in sustaining the adaptive approach beyond the life of the project.