Heavier and more frequent rains can damage crops and would undoubtedly increase susceptibility to erosion and landslides, especially given the extreme topographical relief in Burundi. Roads and buildings could be damaged, and siltation could negatively affect hydropower infrastructure. People resettled close to lake edges or near lowlands and marshes are likely to be flooded. Areas most vulnerable to heavy rains are the Imbo plains, the steep slopes of Mumirwa, and the Bugesera depression. Excess rain can also increase the presence of pests or diseases affecting foodcrops, livestock, and human lives. Water-borne diseases such as dysentery and cholera would likely increase. On the other hand, aquatic and avian productivity is likely to improve with the flooding of marsh areas (Burundi, Republic du, Ministère de l’Eau, de l’Environnement, de l’Aménagement du Territoire et de l’Urbanisme 2009). Drought leads to lower levels of water in lakes and reservoirs and to decreased aquatic ecosystem productivity.