
The rate of water decline in the Amazon rivers accelerated at the beginning of September, but remains within the expected normality, maintaining levels above the historical record for the same period in 2024.
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The 2024 drought in Amazonas was the worst recorded in the historical series.
The descent of water gained an accelerated pace during the period, but the scenario is still considered normal and is within expectations, according to the Brazilian Geological Survey (SGB). The beginning of September is among the times of greatest intensity of river ebb throughout the state.
Despite the acceleration in the drop in water levels, the behavior of the Rio Negro in the 2026 drought is still different and slower than that recorded in the same period in 2024, when the Amazon faced the worst drought in the historical series.
That year, between September 1 and 9, the Rio Negro retreated 2.05 meters, the equivalent of 80 centimeters more than that recorded in the same period in 2026. On September 9, 2024, the level of the Rio Negro was 17.73 meters.
This Wednesday, the level of the other rivers in the Amazon continued to fall. In Itacoatiara, the recorded level of the Amazon River was 8.92 meters, according to the Praticagem dos Rios Ocidentais da Amazônia (Proa). In the locality, the river was below the mark reached on the same date the previous year, when it registered 11.42 meters.
In Tabatinga, the Solimões River recorded 3.16 meters on September 9th. In Coari, the level of the same river is 11.80 meters. The locations also registered quotas below the marks reached in the same period in 2025.
According to the Amazonas Civil Defense monitoring panel, released this Wednesday, 13 municipalities in the state were in a state of attention due to river droughts, 14 in a state of alert and seven in a state of emergency:

Four boa constrictors were rescued at the Mata Escura Penal Complex, in Salvador, this Wednesday (9) by GEPA of the Municipal Civil Guard, with support from GEOP. The snakes were sent to Cetas do Inema for veterinary and biological evaluation before being returned to the wild.

Residents of the Pari neighborhood, in São Paulo, created a task force to locate a capuchin monkey seen for the first time on Saturday (7), with records of its presence in the city for at least three years. The Municipal Green and Environment Secretariat (SVMA) states that the animal is healthy and moves freely, not justifying capture, and advises the population to keep their distance and report sightings. Residents defend green corridors as a solution to facilitate the safe movement of urban fauna.

A storm hit Pouso Alegre (MG) on the afternoon of this Wednesday (9), causing flooding in streets in the Center and in the neighborhoods of São Geraldo, Nova Pouso Alegre and Faisqueira, with cars stranded, water invading commercial areas and difficult circulation. Furthermore, the asphalt gave way on Avenida Prefeito Tuany Toledo (Avenida do Foch), opening a crater near the place where a new traffic light will be installed, increasing the risks for drivers.
An extratropical cyclone causes intense rain in São Paulo and Paraná. The capital of São Paulo could record more than 100 millimeters of rain in five days, exceeding the September average. Meteorologists predict intensification of the system between Rio Grande do Sul and Santa Catarina.

Storms this Wednesday morning (9) in Campinas (SP) resulted in four points of flooding in the city. There are no reports of injuries and the roads remain passable, according to City Hall and local records.

Cemaden pointed out a moderate risk of hydrological and geological events in the Paraíba Valley due to the forecast of persistent and heavy rains, with the highest accumulations recorded on the North Coast.