In this state comes the main river of Venezuela, the Orinoco, in the mount delgado Chalbaud. Other rivers in the state are: Ventuari river, Yatití, Parú, Asita, Manapiare, Marieta, Guapachí, Ocamo, Putaco, Padamo, Cuntinamo, Botamo, Matacuní, Ugueto, Mavaca, Manaviche, Cunucunuma, Guanane, Yagua, Guaviare, Sipapo, Cataniapo Atabapo, Uesete, Siapa, Ararí, Manipitare, Casiquiare, Pamoni, Pasiba, Pasimoni, Negro and Guainía.