Do Sono River (Tocantins)
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| Do Sono River Rio do Sono | |
|---|---|
  | |
| Location | |
| Country | Brazil |
| Physical characteristics | |
| Source | |
| • location | Tocantins state |
| • coordinates | 10°10′56″S 46°56′10″W / 10.182131°S 46.936068°W |
| Mouth | |
• location | Tocantins River, Pedro Afonso, Tocantins |
• coordinates | 8°57′35″S 48°10′34″W / 8.959754°S 48.175988°W |
| Basin features | |
| Tributaries | |
| • left | Novo River |
| • right | Soninho River |
The Do Sono River (Portuguese: Rio do Sono) is a river of Tocantins state in central Brazil. It is a right tributary of the Tocantins River.
The river has its headwater in the 158,885 hectares (392,610 acres) Jalapão State Park, a fully protected conservation unit created in 2001.[1] The Do Sono forms at the confluence of the Novo and Soninho on the northwest boundary of the state park.