Drought Has Dried Major Amazon River Tributary to Lowest Level in over 122 Years

 A part of the Negro River is dry at the port in Manaus, Amazonas state, Brazil, Friday, Oct. 4, 2024, amid severe drought. (AP)
A part of the Negro River is dry at the port in Manaus, Amazonas state, Brazil, Friday, Oct. 4, 2024, amid severe drought. (AP)
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Drought Has Dried Major Amazon River Tributary to Lowest Level in over 122 Years

 A part of the Negro River is dry at the port in Manaus, Amazonas state, Brazil, Friday, Oct. 4, 2024, amid severe drought. (AP)
A part of the Negro River is dry at the port in Manaus, Amazonas state, Brazil, Friday, Oct. 4, 2024, amid severe drought. (AP)

One of the Amazon River's main tributaries has dropped to its lowest level ever recorded, Brazil's geological service said 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 meters on Friday, as compared with a normal level of about 21 meters. 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.

The Negro River's water level might drop even more 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 River's longest tributary.

The Negro River 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 River.

For locals, the drought has made basic daily activities impossible. Gracita Barbosa, 28, works as a cashier on a floating shop on the Negro River.

She's out of work because boats that once stopped there can no longer navigate the river due to the low water levels.

Barbosa can no longer bathe in the river and now has to travel longer distances to collect drinking water.



'Amphibious Mouse' among 27 New Species Discovered in Peru's Amazon

A clearwing butterfly (Oleria sp.) specimen, from one of the 218 species of butterflies observed during an expedition to the Peruvian region of Alto Mayo, is pictured, June 8, 2022. Conservation International/photo by Marlon Dag/Handout via REUTERS
A clearwing butterfly (Oleria sp.) specimen, from one of the 218 species of butterflies observed during an expedition to the Peruvian region of Alto Mayo, is pictured, June 8, 2022. Conservation International/photo by Marlon Dag/Handout via REUTERS
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'Amphibious Mouse' among 27 New Species Discovered in Peru's Amazon

A clearwing butterfly (Oleria sp.) specimen, from one of the 218 species of butterflies observed during an expedition to the Peruvian region of Alto Mayo, is pictured, June 8, 2022. Conservation International/photo by Marlon Dag/Handout via REUTERS
A clearwing butterfly (Oleria sp.) specimen, from one of the 218 species of butterflies observed during an expedition to the Peruvian region of Alto Mayo, is pictured, June 8, 2022. Conservation International/photo by Marlon Dag/Handout via REUTERS

An "amphibious mouse" with partially webbed feet that eats aquatic insects was among 27 new species discovered during a 2022 expedition to Peru's Amazon, according to Conservation International.

Scientists also discovered a spiny mouse, a squirrel, eight types of fish, three amphibians and 10 types of butterflies, Trond Larsen, head of Conservation International's Rapid Assessment Program, told Reuters this week.

He added that another 48 species found by investigators were potentially new, but needed further study.

The new species were found in Alto Mayo, a protected area with several ecosystems, Indigenous territories and villages.

"Discovering so many new species of mammals and vertebrates is really incredible, especially in such a human-influenced landscape as Alto Mayo," Larsen said.

The expedition between June and July 2022 was made up of 13 scientists plus local technicians and members of Indigenous groups.

"It was really fantastic to work so closely with the Awajun people. They have extensive traditional knowledge about the forests, animals and plants they live side-by-side with," Larsen said.

Among the new species, Larsen highlighted the spiny mouse that has stiff fur, the amphibious mouse, and a dwarf squirrel that measures 14 cm (5.5 in).

"(The squirrel) fits so easily in the palm of your hand. Adorable and beautiful chestnut-brown color, very fast," Larsen said. "It jumps quickly and hides in the trees."

Another favorite discovery was the blob-headed fish, a type of armored catfish, he said.

A total of 2,046 species were recorded during the 38-day expedition using camera traps, bioacoustic sensors and DNA sampling. Among them, 49 were classified as threatened, including the yellow-tailed woolly monkey and the tree monkey.

Larsen said the discoveries reinforced the need to protect the area.

"Unless steps are taken now to safeguard these sites and help restore parts of the landscape ... there's a strong chance they won't persist in the long term," Larsen said.