KnowraMarañón RiverLinked fromLinked fromThe 3 pages that link to Marañón River, each with the reason it gives.All 3Related 3Amazon RiverRelated: Together with the Ucayali, it forms the main Amazon channel.Francisco de OrellanaRelated: Early accounts and maps sometimes used this name for stretches of the river Orellana descended.Ucayali RiverRelated: Their junction downstream marks the beginning of the Amazon River proper.