The Dornelles River is a river located in the state of Mato Grosso do Sul, Brazil. It is a tributary of the Paraguay River, contributing to the region's rich biodiversity and ecosystem. The river flows through various landscapes, including forests and wetlands, providing habitats for numerous species of flora and fauna. The Dornelles River is significant for local communities, as it supports fishing and agriculture. Its waters are essential for irrigation and drinking, making it a vital resource for the people living in the surrounding areas. Conservation efforts are important to maintain the health of the river and its environment.