AMAZON RIVER WATER LEVEL PERIODS: Water Level increasing period: November to June: Maximum Level: June to July. Water Level decreasing period: July to October: Maximum Level: October to November.

AMAZON RIVER WATER LEVEL: The information about the Santarém and Manaus Amazon River Water Level are disseminated by radio diffusion, commercial and television stations and news papers at the cities of Belém, Manaus, Santarém and Macapá. That information can be obtained also at the Navy Bases and repartitions in the area. (Capitania dos Portos da Amazônia Oriental, Belém, Capitania dos Portos no Amapá, Delegacia Fluvial, Santarém, Capitania Fluvial da Amazônia Ocidental, Manaus and Serviço de Sinalização Náutica do norte, Belém).