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News articles on Rivers

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Mongabay.com news articles on rivers in blog format. Updated regularly.

Dried-up Colorado takes toll on giant Mexican fish
(6/8/2008) The Colorado River vanishes before it reaches the Sea of Cortez in all but the wettest years. Companies in California and the southwestern U.S. have diverted its once-vibrant flow to quench their thirst for water and power. Now, a new study in the April 2008 issue of the journal Biological Conservation reports that the dwindling of this major artery has changed the way some marine fish in the Gulf of California grow and develop.


Diversity in streams may brace Chinook salmon for climate change
(6/3/2008) Chinook salmon face a one-two punch. They have disappeared from several rivers in the western U.S. largely because of human interventions and some populations are threatened or endangered. Numbers of Chinook in California's Central Valley have dwindled by 88 percent in the past five years, a loss that closed fisheries for 2008 and may cost California's economy $167 million, according to the state Department of Fish and Game. On top of all this looms a second impact: These salmon will be in hotter water still because of climate change.


Will earthquake slow dam-building spree in China?
(5/14/2008) Monday's 7.9 magnitude earthquake in Sichuan province left more than 15,000 dead, 26,000 missing, and 64,000 injured, according to state media. The quake also "seriously damaged" two hydroelectric stations in Maoxian county, leading authorities to warn that the dams could burst. More than 2,000 troops were sent to work on the Zipingku Dam, a dam said to be in "great danger" of collapse upriver from Dujiangyan, the city at the quake's epicenter.


New species of river dolphin discovered in the Amazon
(4/30/2008) Researchers have identified a new species of river dolphin in the Bolivian Amazon according to the Whale and Dolphin Conservation Society (WDCS). The announcement was made at a conservation workshop in Santa Cruz de la Sierra in Bolivia.


Judge suspends Amazon dam project due to legal questions
(4/30/2008) A Brazilian judge has issued a restraining order on a controversial dam in the Amazon basin, reports International Rivers, a conservation group.


New expedition seeks evidence for survival of the 'extinct' Baiji
(4/16/2008) The EDGE program, apart of the London Zoological Society, has sent an expedition to the Yangtze River to survey local fishermen for any evidence that the Baiji may still survive.


U.S. flooding to continue well into spring
(3/21/2008) Flooding in the American Midwest is likely to continue, said the U.S. National Weather Service.


Corn ethanol is worsening the Gulf dead zone
(3/10/2008) Proposed legislation that will expand corn-ethanol production in the United States will worsen the growing "dead zone" in the Gulf of Mexico and hurt marine fisheries, report researchers writing in the Proceedings of the National Academy of Sciences (PNAS).


Feds flood the Grand Canyon to save endangered fish
(3/5/2008) Federal government officials unleashed a flood of water from Glen Canyon Dam in northern Arizona to help restore the Grand Canyon's ecosystem which has suffered as a result of changes caused by the dam.


Lake Mead could be dry up by 2021
(2/12/2008) There is a 50 percent chance Lake Mead, a key source of water for millions of people in the southwestern U.S., will be dry by 2021 if climate changes as expected and future water usage is not curtailed, a new study finds.


Overfishing may hurt Amazon forest trees
(2/5/2008) Overfishing is reducing the effectiveness of seed dispersal by fish in the Brazilian Pantanal, reports Nature. The research suggests that fishing practices can affect forest health.


U.S. biofuels policy drives deforestation in Indonesia, the Amazon
(1/17/2008) U.S. incentives for biofuel production are promoting deforestation in southeast Asia and the Amazon by driving up crop prices and displacing energy feedstock production, say researchers.


Cellulosic ethanol production could fight Gulf Dead Zone, help fisheries
(1/16/2008) Feedstocks for cellulosic ethanol production could help fight the massive "dead zone" that forms each year in the Gulf of Mexico as a result of current farming practices, says a University of Alabama in Huntsville biologist.


Controversial dam in the Amazon gets Brazilian go-ahead
(12/11/2007) The Brazilian government has awarded rights to build and operate a controversial R$10bn hydroelectric power plant on the Madeira river in the Amazon rainforest near the border with Bolivia, according to FT.com.


Piranhas originated when Amazon was flooded by seawater
(12/4/2007) South America's piranha family of fish -- notorious as eaters of flesh -- can be traced back to a single ancestor which dispersed when the Amazon was flooded by seawater some five million years ago, report researchers from the Institut de Recherche Pour le Développement (IRD). Today piranhas are exclusively freshwater fish found from the Orinoco River basin in Venezuela to the Paraná in Argentina.


China begins blocking river for second largest dam
(11/12/2007) China began damming the Jinsha River for its biggest hydroelectric project after the Three Gorges Project, reports Chinese state media.


Central Africa's 'Most Beautiful Waterfall' to be destroyed
(11/4/2007) One of Africa's most dramatic waterfalls will be destroyed by a hydroelectric project in Gabon, according to reports from a Gabonese NGO and the Inter Press Service (IPS).


Dams can pose security risk to Africa
(10/4/2007) Floods are the most destructive, most frequent and most costly natural disasters on earth. And they are getting worse. In recent weeks, 14 African nations have seen their worst floods in decades. More than a million people have been affected, over 200 drowned, and countless others made homeless across the continent. At least some of this suffering was preventable.


Flooding in India Leaves 3.5 million Homeless
(9/11/2007) The Indian military has been evacuating thousands of people from Assam, a state in northeastern India, after Monsoon rains flooded rivers. So far, 3.5 million people have been directly affected by the floods, in a state of 27 million. A total of 2,000 villages have been completely submerged by the floods, in some of the worst flooding in years.


Rare Chinese river dolphin sighting in doubt
(9/1/2007) A prominent researcher is skeptical of last week's reported sighting of the baiji, the Chinese river dolphin declared extinct earlier this year, according to the New York Times. The sighting near Tongling city in Anhui Province -- widely reported in Chinese and Western media -- was captured on video.


"Extinct" baiji river dolphin spotted alive in China
(8/29/2007) An "extinct" baiji has been spotted alive in the Yangtze River, reports Chinese state media.


Environmental, safety concerns mount over China's Three Gorges Dam
(8/29/2007) Environmental problems are worse than anticipated at China's massive Three Gorges Dam, reports the The Wall Street Journal. A year after its completion, there are rising concerns of pollution, landslides, and flooding.


Extinction of the Yangtze river dolphin is confirmed
(8/8/2007) After an extensive six-week search scientists have confirmed the probable extinction of the baiji or Yangtze river dolphin. The freshwater dolphin's extinction had been reported late last year.


China's wetlands shrinking due to global warming
(7/16/2007) Wetlands on China's Qinghai-Tibet plateau have shrunk by more than 10 percent over the past 40 years, posing a threat to agriculture and river flows, according to scientists from the Chinese Academy of Sciences. Wetlands at the Yangtze's origin contracted 29 percent over the same period.


$11B Amazon rainforest dam gets initial approval
(7/10/2007) The Brazilian government has given preliminary go-ahead on a massive Amazon dam project that environmentalists and scientists say could be a potential ecological disaster.


NASA maps newly proposed source of the Amazon River
(7/3/2007) NASA released a map showing the newly proposed source of the Amazon River, a change that would make it the longest river in the world. Last month Brazilian researchers proposed Mount Mismi, a snow-covered mountain in southern Peru as the source of the Amazon River. Previously, the generally accepted source was in northern Peru. If the revision holds, the length of the Amazon would exceed that of the Nile by roughly 60 miles (105 km). However the claim is likely to be contested.


Man-eating piranha are actually cowards
(7/1/2007) Despite their reputations as aggressive blood-thirsty carnivores, piranha schooling behavior is a defensive measure to protect against predators rather than an offensive hunting maneuver, reports new research presented at the Royal Society's summer science exhibition in London. Piranhas face many predators in their Amazon habitat, including caiman, freshwater dolphins, and giant fish like the pirarucu or arapaima.


Set back for AES on rainforest dam project in Panama
(6/26/2007) The World Heritage Committee moved to assess threats to La Amistad International Park, a World Heritage site shared by Panama and Costa Rica, from AES Corporation's planned construction of four hydroelectric dams on the park's border. The decision was based on an April 2007 petition from the Center for Biological Diversity and more than 30 other organizations in the United States, Panama, and Costa Rica.


Is the Amazon longer than the Nile?
(6/18/2007) Brazilian researchers claim they have evidence proving that the Amazon is the longest river in the world, some 65 miles (105 km) longer than the Nile, reports BBC News.


Dam protest leaves four dead in Sudan
(6/14/2007) Four people were killed and at least 10 wounded when police dispersed a group of protesters in Sudan, reports Sapa-AFP. The domestrators had gathered to protest a dam in the Kijbar region. Local press said that police fired on group as they tried to attack construction equipment being used to build the dam.


Brazil debates $11B Amazon dam project
(6/10/2007) The eternal tension between Brazil's need for economic growth and the damage that can cause to the environment are nowhere more visible than here in this corner of the western Amazon. Now a proposal to build an $11 billion hydroelectric project here on the Madeira River, which may have the world's most diverse fish stocks, has set off a new controversy.


Amazon tribe blocks major Brazilian highway
(6/8/2007) Indigenous Amazonians have blocked a major highway in the Brazilian state of Mato Grosso to protest a series of hydroelectric dams planned on the Xingu river, one of the Amazon's largest tributaries, according to Brazzil Mag and Survival International.


Rare softshell turtle rediscovered in Cambodia
(5/16/2007) Scientists from Conservation International have successfully hatched a clutch of eggs from one of the world's most endangered turtle species.


'Green' dams could reduce GHG emissions
(5/14/2007) Scientists in Brazil have developed a way to reduce greenhouse emissions from large hydro-electric dams, according to a report from BBC News. The technology, developed by researchers at Brazil's National Space Research Institute (INPE), extracts methane from reservoir water to supplement energy produced by the dam turbines.


China to spend $2.1B to protect wetlands
(4/25/2007) China says it will spend more than $2.1 billion (16.5 billion yuan) to protect and restore its highly endangered wetlands over the next five years.


Damage to Yangtze 'irreversible' says China
(4/16/2007) Pollution, dams and excessive boat traffic have caused an 'largely irreversible' decline in the aquatic ecology of the Yangtze says a report issued by China's official State Environmental Protection Administration (SEPA).


Man swims entire length of Amazon river
(4/9/2007) Slovenian marathon swimmer Martin Strel became the first person to swim the entire length of the Amazon River Saturday when he arrived in Belem, Brazil. Strel was immediately taken to the hospital in critical condition but is now recovering in a local hotel.


Herring fish restored to Bronx River in New York City
(4/5/2007) Building on last year's first-ever successful stocking of river herring in the Bronx River, an estimated 400 additional fish were released today in an ongoing effort to establish a breeding population of these native fish in one of the nation's most urbanized waterways. The release, which took place on the grounds of the Bronx Zoo, is part of a partnership among a diverse group of officials, biologists and citizen's groups to restore the Bronx River, the only remaining fresh water river within New York City's borders.


Global warming could hurt salmon fisheries in Pacific Northwest
(4/2/2007) Global warming could cause Chinook salmon populations in Washington state to decline 20-40 percent by 2050 according to a new study published in the online early edition of PNAS. The researchers urge policymakers to focus on restoration of lower elevation habitats in order to reduce the expected impact of climate change on salmon populations.


The news of extinction: western media's response to the demise of the Baiji
(4/1/2007) The news came and went with an alacrity that I found alarming, almost jolting. I waited for weeks, faithfully; I could not believe that the initial announcement would be followed by nothing but silence on the issue, no rationalizations, no opinions, no discussions, no outpourings of grief. Just silence.


China will continue search for 'extinct' baiji river dolphin
(12/17/2006) Chinese state media reports that scientists will continue to search for the baiji dolphin even after a 38-day search failed to produce any evidence of its existence in the Yangtze River.


Goodbye to the Baiji
(12/13/2006) After a short illness spurred by pollution, overfishing, boat traffic, and obstructions like dams, the Baiji was declared 'functionally extinct' last night. As a species, the river dolphin found only in China's Yangtze River was 20 million years. The Baiji is survived by other river dolphins, all themselves threatened, in the Ganges, Indus, Amazon, Orinoco, and La Plata rivers. No memorial service will be held.


Goodbye to the Baiji
(12/13/2006) After a short illness spurred by pollution, overfishing, boat traffic, and obstructions like dams, the Baiji was declared 'functionally extinct' last night. As a species, the river dolphin found only in China's Yangtze River was 20 million years. The Baiji is survived by other river dolphins, all themselves threatened, in the Ganges, Indus, Amazon, Orinoco, and La Plata rivers. No memorial service will be held.


African river basins are drying up says NASA
(12/13/2006) New satellite data from NASA show that the Mississippi and Colorado River basins are storing more water over the past five years, while the Congo, Zambezi and Nile basins are drying.


Chinese river dolphin nearly extinct says official
(12/3/2006) Xinhua, China's state news agency, reported that a 26-day search for the Baiji, or the Yangtze dolphin, found no dolphins. The Baiji is highly threatened by pollution, overfishing, and obstructions like dams.


Volcanic eruptions in Iceland shrunk Nile River
(11/21/2006) A series of volcanic eruptions in Iceland in the 18th century dramatically impacted the mighty Nile River according to a new study published in Geophysical Research Letters. The research, partly funded by NASA, shows that volcanic eruptions in high latitudes can greatly alter global climate and distant river flows. The scientists found that Iceland's Laki volcanic event, a series of roughly ten eruptions from June 1783 through February 1784, altered atmospheric circulations across much of the Northern Hemisphere, reducing rainfall over much of the Nile River watershed and producing record low river levels. The researchers said that the Laki event had a significant impact on climate because it released large amounts of aerosol-forming sulfur dioxide into the atmosphere. The aerosols, which cool climate by reflecting incoming sunlight into space, may have reduced the average temperature over Northern Hemisphere land masses by as much as 3 degrees Celsius in the summer of 1783, according to computer models used in the study.


Amazon river flowed into the Pacific millions of years ago
(10/24/2006) A new study adds further evidence the theory that the world's largest river, the Amazon, once flowed in the opposite direction, emptying into the Pacific Ocean. Researchers at the University of North Carolina at Chapel Hill (UNC) discovered "ancient mineral grains" in the central Amazon that could only have originated in now-eroded mountains that once existed in the central and eastern South America, not the more recently formed Andes in the west


Fish decline has ecological impact in tropical river
(8/14/2006) Dramatic population reductions of a single fish species in a South American river could degrade ecosystem function in an entire river system, according to an article in the Aug. 11 issue of the journal Science.


Amazon drought extends into second year
(8/11/2006) The drought in the Amazon rainforest looks to be extending into a second year. Last week Brazil's government declared a state of emergency across more than 250 towns in the region due to lack of rainfall. Last year's drought, which left rivers dry, stranded thousands of villagers, and put regional commerce at a standstill, was the worst on record.


Amazon Port Pits Farmers Vs. Rainforest
(7/18/2006) When U.S. grain giant Cargill opened a $20 million port in this sleepy Amazon River city three years ago, it expected to cash in on the rising global demand for soybeans that had become Brazil's richest agricultural export.



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