01 Two rivers that refuse to mix
The Meeting of the Waters
- Where
- About 10 km downstream of Manaus
- How far
- They run side by side roughly 6 km
- When
- Year-round; nothing published ranks it by month
The Rio Negro arrives at Manaus warm, slow and stained almost black by dissolved plant tannin. The Solimões arrives from the Andes several degrees colder, moving considerably faster, and so loaded with silt that it is the color of milky coffee. Where they meet, the difference in temperature, speed and density is enough that they refuse to blend, and the two run beside each other for about six kilometers under one hard, wandering line before the Amazon finally takes over.
It is a boat trip and it is worth doing properly. Skippers cut the engine on the boundary and let you put a hand in each river, which is the moment the whole thing stops being a photograph and starts being physics. Most operators pair it with the flooded forest and the giant lily pads at Lago do Janauari, and often lunch on a floating restaurant, which turns it into a comfortable half or full day out of Manaus.