There specimens typical from the plains, which corresponds to the phytogeographic province of Monte, can be seen, such as toads and frogs (amphibians), partridges, pigeons, Southern lapwing and becadas (birds), iguanas, lizards and snakes (reptiles), rats, guinea pigs, skunks, viscachas, armadillos and weasels.
Because the department is farmed or urbanized almost in its entirety, there are few examples of indigenous plants. In the higher area of Maipú (western sector) can be found jarilla, algarrobo dulce, alpataco and retamo. In the lower area (east and north sectors), characterized by low humidity and saline soils, there are specimens of zampa, jume, retortuño and salty grass.
The department is crossed in its southern end by the middle bank of the Mendoza River, more specifically through the districts of Lunlunta, Cruz de Piedra, Barrancas, Rodeo del Medio, Fray Luis Beltrán and San Roque. During most of the year, this part of the river carries little water. Its flow increases in the summer or when there are desanding works at the Cippolletti dam.