News tagged with river flow
Researchers map fish species at risk from dams
Dams are believed to be one of the biggest threats to freshwater organisms worldwide: They disrupt normal patterns of water and sediment flow, impede migration, and alter the character of spawning and feeding grounds. A shortage ...
May 10, 2012 |
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The desert Southwest: Oasis or mirage?
(Phys.org) -- The American West has a drinking problem. On farms and in cities, we are guzzling water at an alarming rate.
May 09, 2012 |
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Current water resources in Europe and Africa
A new assessment of available water resources, published today by the Joint Research Centre (JRC), reveals that large areas in Spain and Eastern Europe have on average less than 200 mm freshwater available ...
Mar 14, 2012 |
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Researchers predict record Gulf of Mexico 'dead zone' due to Mississippi River flooding
ANN ARBOR, Mich.---Extreme flooding of the Mississippi River this spring is expected to result in the largest Gulf of Mexico "dead zone" on record, according to a University of Michigan aquatic ecologist and his colleagues.
Jun 15, 2011 |
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Foothill yellow-legged frog provides insight on river management
River flow fluctuations downstream of dams are often out of sync with natural flow patterns and can have significant negative effects on aquatic species, such as native frogs, according to a team of scientists from the USDA ...
May 16, 2011 |
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Drought halts shipping on China's Yangtze
Drought on China's Yangtze river has led to historically low water levels that have forced authorities to halt shipping on the nation's longest waterway, the government and media said Thursday.
May 12, 2011 |
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Fatal floods in Africa
When natural disasters claim human lives, it's important to determine whether the problem is geophysical or cultural. A new study shows that the large upswing in flood deaths in Africa over past decades is ...
Space & Earth / Earth Sciences
Dec 16, 2010 |
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Elevated zinc concentrations in Colorado waterway likely a result of climate change
Rising concentrations of zinc in a waterway on Colorado's Western Slope may be the result of climate change that is affecting the timing of annual snowmelt, says a new study led by the University of Colorado ...
Dec 15, 2010 |
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Amazon at lowest level in over 40 years in Peru: experts
The Amazon, the world's biggest river, is at its lowest level in over 40 years near its source in northeastern Peru, causing havoc in a region where it is used as the only form of travel, authorities said.
Sep 02, 2010 |
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Mimicking fish and tailoring radar to warn of bridge peril
Floods cut down more bridges than fire, wind, earthquakes, deterioration, overloads and collisions combined, costing lives and hundreds of millions of dollars in damage.
Sep 01, 2010 |
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First satellite measurement of water volume in Amazon floodplain
For the first time, scientists have been able to measure the amount of water that rises and falls annually in the Amazon River floodplain.
Space & Earth / Earth Sciences
Aug 05, 2010 |
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Hydrokinetic proposal for Mississippi river
(PhysOrg.com) -- Everyone is looking for alternative forms of energy, and one company proposes to generate electricity from the flow of the river Mississippi in the US, without using dams to control the water ...
Technology / Energy & Green Tech
Mar 23, 2010 |
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More reliable forecasts for water flows can reduce price of electricity
Brazil, Canada, China, the US, Russia, Norway, Japan, and Sweden are among the largest producers of hydroelectric power in the world. One problem for hydroelectric power companies is that the great variations in the river ...
Jan 19, 2010 |
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NASA tech zooms in on water and land
In a pilot project that could help better manage the planet's strained natural resources, space-age technologies are helping a Washington state community monitor its water availability. NASA satellites and ...
Dec 15, 2009 |
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Some Canadian rivers at risk of drying up
(PhysOrg.com) -- Some Canadian rivers are at risk of drying up as impacts of climate change intersect with growing water demand from the country's cities, industries and agriculture, a new WWF report has found.
Oct 15, 2009 |
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