The Río Bermejito is the former channel of the Río Bermejo, now functioning as an intermittent, meandering waterway that crosses Chaco Province through the El Impenetrable region. Near the Tropic of Capricorn, the Bermejo splits into two branches; the Bermejito is the smaller southern branch, while the northern branch is known as the Teuco. The two branches rejoin near Villa Río Bermejito at approximately 25°39′S 60°11′W. The river sits at an altitude of around 111 meters above sea level and flows through a subtropical climate zone.

The character of the paddling is defined by calm, winding water with slow-moving stretches that require no prior kayaking experience. The banks are densely vegetated with gallery forest typical of the Chaco, and the surrounding landscape is largely undisturbed. Wildlife is consistently present along the shoreline, and bird activity is particularly notable throughout the paddling corridor.

In summer, the river functions as a secondary branch of the Bermejo system, receiving additional flow that sustains the gallery forests along its margins. This seasonal dynamic affects water levels and the overall navigability of the river. Fishing is a common activity alongside kayaking, with bagres, mojarras, and sábalos inhabiting the water.

One documented route runs approximately 13 kilometers downstream with the current, used as a return leg after a 15-kilometer trek along the riverbank. This suggests a multi-day itinerary is feasible, with the downstream paddle serving as an active return. No prior paddling experience is necessary for this stretch.

The town of Villa Río Bermejito serves as the main hub for access to the river. It is reached from Resistencia, the provincial capital, via Ruta Provincial 90 and Ruta Provincial 3, a distance of approximately 270 kilometers. The town has a municipal campsite situated directly on the river's edge, with sanitary facilities including bathrooms, showers, and laundry sinks, as well as a wooden boardwalk trail running along the riverbank. Glamping El Bermejito is another accommodation option that offers organized kayak outings on the river. On the river's shores stand ruins of former colonial settlements including Concepción del Bermejo, San Bernardo de Vértiz, and La Cangayé.