The Rio Paranhana flows through the state of Rio Grande do Sul in southern Brazil, passing through the municipality of Três Coroas before eventually joining the Rio dos Sinos. Três Coroas sits in the Rio Paranhana valley at an average altitude of 56 meters and lies approximately 90 km from Porto Alegre, making the river reasonably accessible from the state capital via the RS-115 and RS-020 highways.

The river has an established reputation as a paddling destination. Brasil Raft Park, located in the Linha Café district of Três Coroas, operates along the riverbank and offers rafting and kayaking among its activities, set within Atlantic Forest surroundings. A second commercial operation, Raft Adventure, is also situated in the municipality. The river has hosted competitive paddling at an international level — a Pan American Canoe Slalom and Kayak Cross event took place at Três Coroas in April 2023, indicating the river carries sufficient gradient and flow to support technical whitewater disciplines.

The regional climate is humid subtropical, classified as Cfa/Cfb under the Köppen system, with an average annual temperature of 20°C and approximately 2,000 mm of rainfall per year. July tends to be the wettest month, averaging around 157 mm of precipitation. Paddlers planning trips should factor in seasonal rainfall patterns, as higher precipitation months are likely to affect river levels and flow character.

The broader area around Três Coroas includes Parque das Laranjeiras and the Chagdud Gonpa Khadro Ling temple, which is open to the public and set in the surrounding hills. The municipality's economy includes ecotourism alongside its shoe manufacturing industry, and the river is considered one of the town's primary natural attractions.