According to measurements, the rainfall in the Esteros del Iberá, which annually oscillates between 1200 and 1500 mm., Returns to the system an amount of liquid equivalent to that which evaporates. ? The Iberá is an efficient water regulating dam, and this phenomenon causes effects in the area such as the bathed ones.
Aquatic plants such as aguapés (camalotes in Guaraní), reed beds and reservoirs stand out; On the surface of the waters, you can see: irupés (water plate), and small ferns among others.?Among the different species of trees are, among others, the black lapacho, fig, viraró, black laurel, white quebracho, ombúes, jacarandas, ceibos, willows, timbo, and espinillos. Among the palm trees, the yatay, lindó and caranday are common.
Two kinds of Yacaré coexist in the estuaries, the black with a narrow snout and the ñato or overall with a wide snout. Among other species, there is an abundance of the River Lobito, a provincial natural monument, the capybara, which is the largest rodent, the swamp deer and carayás or howler monkeys.
Small gray foxes can also be found; Wildcat; skunks; black armadillos, furry, mullets, ferrets, weasels, hares, vizcachas; cuis and overo lizard; lizards, turtles. Among the reptiles: the water boa, the vizcacheras boa, boa constrictor. And the poisonous coral snakes, rattlesnake, will yara. ? There are more than 300 varieties of birds: such as capuchins, herons of all kinds, yellow and red breasts, goldfinches, cardinals and other colorful species of birds. There are also fish such as tarariras, eels, palometas or piranhas, bogas, tarpon, catfish, toothy, etc.