With the above topographic, climatic and soil settings, the vegetation types which cover the park are categorized under five broad types of open "combretaceous" shrub savanna, "anogeissus leiocarpus" woodland, "lannea humilis" open grass savanna, "acacia seyal" tree savanna and Yaéré floodplains with perennial grasses. In the desert conditions, with no perennial streams flowing through the park area, there are no perennial grasses in the park. The water holes are created for animals. The combretaceous shrub savanna consist of "Sclerocarya birrea" tree savanna, "Combretum" and "Terminalia" shrubs and the doum palm "Hyphaene thebaica". The "Anogeissus leiocarpus" woodland is in sandy soils with "Mitragyna inermis" in pockets near temporary water bodies. Lannea humilis are open grass savanna combined with short annual grasses. Patches of trees and stands of "Mitragyna inermis" are also reported from small islands near temporary water bodies. In this condition, vegetation reported are in the formations of compact clay. However, the area is very saline due to high evaporation. The fourth category of vegetation comprises Acacia seyal tree savanna growing in black clay soils which gets highly saturated during the rainy months; grasses in these conditions spread very slowly or may even dry up. The last type of vegetation is reported in the Yaéré flood plains, an important area to maintain perennial grasses in the park. The grasses reported are: "Vetiveria nigritana", "Oryza barthii", "Echinochloa pyramidalis" and "Echinochloa stagnina" and a few herbaceous legumes with "Sesbania pachycarpa." However, in these conditions, where there are no trees, forest fires are common. A particular feature in the central and western parts of the park was that substantial areas were of annual grasses and herbs, interspersed by Acacia seyal shrublands. They were subject to seasonal flooding before the construction of the Maga dam.