Velho Chico, or the São Francisco River, is one of Brazil's most important rivers, stretching over 3,000 kilometers. It flows through several states, including Minas Gerais, Bahia, and Sergipe, providing water for agriculture, drinking, and hydroelectric power. The river is vital for the local economy and supports diverse ecosystems along its banks. The river is also culturally significant, featuring in the lives of many communities. It is home to various species of fish and wildlife, making it a crucial habitat. Additionally, Velho Chico has inspired numerous songs, stories, and traditions, reflecting the rich heritage of the regions it traverses.