Arroyo Uruzú is a tributary of the Urugua-í river system in northern Misiones, Argentina, flowing through Parque Provincial Urugua-I before emptying into the Embalse Urugua-í. The stream drains a significant portion of its watershed within an area designated as an Important Bird and Biodiversity Area (AICA), which also encompasses the Reserva Forestal San Jorge. Elevation along the corridor ranges between roughly 200 and 450 meters above sea level.

The arroyo's character is defined by a varied topography that includes slopes, rapids, and waterfalls, giving it a dynamic and technically interesting profile for paddlers comfortable with moving water. The surrounding environment is dense Atlantic Forest — the selva misionera — which frames the waterway throughout its course.

A patrol route runs from Destacamento Uruzú downstream to the confluence known as Barra del Arroyo Falso-Urugua-í, which provides a reference corridor for trip planning. Environmental rangers from the Ministerio de Ecología, together with wildlife officers and representatives of neighboring private reserves, conduct regular patrols on the arroyo as part of ongoing anti-poaching and conservation efforts. Paddlers should be aware of this institutional presence and the conservation-sensitive nature of the area.

Wildlife monitoring is actively conducted along the stream, reflecting the ecological importance of the corridor. The basin contains headwaters of several tributaries that feed into the broader Iguazú and Urugua-í systems, making water quality and habitat integrity a management priority for provincial authorities.