Das Velhas River

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das Velhas River
Location
Country	Brazil
State	Minas Gerais
Physical characteristics
Source
• location	Ouro Preto
Mouth	São Francisco River
• coordinates	17°12′S 44°50′W / 17.200°S 44.833°W / -17.200; -44.833
Length	801 kilometres (498 mi)

The das Velhas River (Portuguese: Rio das Velhas), is the longest tributary of the basin of the São Francisco river. Its water flows into that river at a place called Barra do Guaicuí, in the municipality of Várzea da Palma, Minas Gerais. The source was found to be the Andorinhas waterfall located in the municipality of Ouro Preto.