>> Estero del Ibera

With an extension of 1.400.000 acres, Esteros del Iberá, is the second biggest wetland in South America. Old or abandoned channels of Paraná river become in the course of time, this independent and complex wetland chain composed by marshlands, estuaries, lagoons, dammings and pluvial origin courses.

Estuaries of this system are made of holded water of around 1 to 3 metres depth, and its covered by two different aquatic plants: those coming from deep down forming molehills at coasting lines and those like water hyacinth ( "camalotes") or dammings ("embalsados") floating and covering water surface.

This dammings systems have its origin in the water hyacinth, where wind and water bring dust. This turns into a first coat letting other plant species, including trees, growing up. In due course other coats come before and this formations integrate floating coasts and its loosening give origin to floating islands that are guide by wind and streams.

While mostly are considered "firm lands", is usually common to find more thin areas, so it turns very dangerous to walk over them. Estuaries keep its level stable as per the capability on holding rainwater due to great quantity of vegetation of this area. According to reports, precipitations that during the year oscillate between 1200 and 1500 Mm., give back the ecosystem same liquid quantity that gets vanish. Less than fourth of this water goes to Paraná River, through Corriente River, which is the only superficial flow of the system.

The Iberá, it's an efficient regulating of water dam, and this causes some effects in the area such as those calling "bañados", one among others of the typical geographic environmental of the region. They build up during plentiful rain period as per water temporal accumulation that drips down brooks covering fall areas.