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 Santarm and Manaus Amazon River Water Level are disseminated by radio diffusion, commercial and television stations and news papers at the cities of Belm, Manaus, Santarm and Macap. That information can be obtained also at the Navy Bases and repartitions in the area. (Capitania dos Portos da Amaznia Oriental, Belm, Capitania dos Portos no Amap, Delegacia Fluvial, Santarm, Capitania Fluvial da Amaznia Ocidental, Manaus and Servio de Sinalizao Nutica do norte, Belm).