Water supply to the depressions in the park has become a major issue for preservation of biodiversity. This situation has arisen on account of construction of the Maga Dam about to the south of the park. Irrigation embankments have also been built along the Logone River, which resulted in poorer grasslands and total elimination of fisheries in some areas. This also resulted in drastic reduction of the antelope population. Under the Logone Project artificial waterholes were dug, providing water all through the year, but the carrying capacity of the floodplain has remained low.