The Amazon River is located in the tropical rainforest, sparsely populated, has no shipping value, and has many rare species, so the Amazon River has low shipping value.

Most areas in the Amazon River basin have a tropical rainforest climate, and the upper reaches have a plateau mountain climate with an annual rainfall of more than 2,000 mm. The fertile silt deposited by the Amazon River nourishes an area of ​​6.5 million square kilometers.

In some places, the Amazon River is 6-10 kilometers wide. In some places, the river water is divided into two streams, forming a complex natural river network in the middle, forming many large and small islands, which are less than 5 meters higher than the river surface. In the narrowest place, such as Obidos, 600 kilometers from the estuary, the river is only 1.6 kilometers wide, but 600 meters deep. At this time, the river flow rate reaches 6-8 kilometers per hour.