Amazon Forest and Amazon River

The Amazon River Discharges More Fresh Water Into the Ocean Than the Next Seven Largest Rivers Combined

That specific fact is one way to understand the scale. The Amazon and its tributaries drain roughly 40 percent of South America, covering a basin of approximately 7 million square kilometres. The volume of water moving through this system creates an environment unlike any other: flooded forests where trees are submerged to 10 metres for months at a time, river channels that shift hundreds of metres between dry and wet season, ecosystems that have been evolving in relative isolation since South America separated from Africa 100 million years ago.

The forest itself contains approximately 10 percent of all species on Earth. New species are still being formally described at a rate of hundreds per year. This is not historical biodiversity – it is active, ongoing, incompletely catalogued.

Where to Base

Manaus, Brazil is the primary gateway: a city of nearly two million at the meeting of the Rio Negro and the Amazon, served by international flights via São Paulo and direct routes from several European cities. The Meeting of the Waters, where the dark tannin-stained Rio Negro meets the sandy-coloured Amazon and the two flows run alongside each other for kilometres without mixing, is one of the more striking geographical phenomena accessible by day boat from the city.

Iquitos, Peru is accessible only by air or river (no roads connect it to the rest of Peru), which gives it a genuine frontier quality. It serves as the gateway to Peru’s Amazon basin, including the Pacaya Samiria National Reserve – 2 million hectares of flooded forest that is the best single destination in Peru for pink river dolphins, giant river otters, and black caimans.

Activities

The activities that actually reveal the Amazon are not the ones most tour marketing emphasises. Night walks by headlamp, moving slowly, are more productive for wildlife encounters than any daytime tour. Early morning canoe or kayak trips on side channels before the main boat traffic starts. Standing in the forest at dawn before the howler monkeys stop calling and the bird activity begins to slow. These require a lodge that takes the timing seriously.

Clay lick visits in Peru’s Tambopata region, where dozens of macaw species descend to exposed riverbanks to consume mineral-rich clay, are one of the more reliable spectacular wildlife experiences available in South America.

Practical Notes

Yellow fever vaccination is required for most Amazon regions. Malaria prophylaxis is standard medical advice; consult a travel doctor about the appropriate option for your specific destination. Bring insect repellent with DEET, lightweight long-sleeved clothing, and waterproof footwear.

Dry season (May through October in Peru; slightly different in Brazil) gives better trekking conditions and concentrates wildlife around water sources. Wet season floods the forests and opens canoe access to otherwise unreachable areas. Both seasons are worthwhile for different reasons.

Minimum three to four days for meaningful wildlife observation. Seven to ten days allows genuine immersion. The operators worth choosing are those whose guides have grown up in the forest rather than learned it from training courses.