Major tributary of the Amazon at lowest level ever following drought

4 October 2024, 19:54

The Negro river at Manaus
Amazon tributary at lowest level ever. Picture: PA

Brazil’s Negro river is the world’s sixth largest river by volume and discharges into the Amazon.

One of the Amazon’s main tributaries has dropped to its lowest level ever recorded, Brazil’s geological service said on Friday, reflecting a severe drought that has devastated the Amazon rainforest and other parts of the country.

The level of the Negro river at the port of Manaus was at 12.66 metres (41ft) on Friday, as compared with a normal level of about 21 meters (69ft).

It is the lowest since measurements started 122 years ago.

The previous record low level was recorded last year, but toward the end of October.

Brazil Amazon Drought
A boat is grounded in the river Negro at the port in Manaus, Brazil (AP Photo/Edmar Barros)

The Negro’s water level might drop even further in coming weeks based on forecasts for low rainfall in upstream regions, according to the geological service’s predictions.

Andre Martinelli, the agency’s hydrology manager in Manaus, was quoted as saying the river was expected to continue receding until the end of the month.

Water levels in Brazil’s Amazon always rise and fall with its rainy and dry seasons, but the dry portion of this year has been much worse than usual.

All of the major rivers in the Amazon basin are at critical levels, including the Madeira river, the Amazon’s longest tributary.

The Negro drains about 10% of the Amazon basin and is the world’s sixth-largest by water volume.

Manaus, the biggest city in the rainforest, is where the Negro joins the Amazon.

By Press Association

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