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Desert Streams Deceptively Simple

Desert Streams: Deceptively Simple

Provided by Julie Cohen, UC Santa Barbara The simple topography of dryland channels presents an interesting paradox according to scientists from UCSB’s Earth Research Institute Volatile rainstorms drive complex landscape changes in...

Latest Water streams Stories

2014-08-05 12:33:35

ATLANTA, Aug. 5, 2014 /PRNewswire/ -- Southern Company, in partnership with the National Fish and Wildlife Foundation (NFWF), has awarded more than $1.8 million in grants to 53 organizations nationwide - as part of the Five Star and Urban Waters Restoration program - to encourage environmental stewardship and community partnerships and protect vital habitats. http://photos.prnewswire.com/prnvar/20080801/SOCOLOGO Funding from Southern Company directly supports 11 projects within the...

2014-05-12 13:53:09

University of Texas at Austin New method -- the first physics-based look at the net effect of nitrate removal in the Mississippi network -- shows the filtering system operating at max capacity A new method of measuring the interaction of surface water and groundwater along the length of the Mississippi River network adds fresh evidence that the network's natural ability to chemically filter out nitrates is being overwhelmed. The research by hydrogeologists at The University of Texas...

Economical Solutions For Maintaining Critical Delta Environments
2013-12-10 08:47:46

Woods Hole Oceanographic Institution Millions of people across the world live or depend on deltas for their livelihoods. Formed at the lowest part of a river where its water flow slows and spreads into the sea, deltas are sediment-rich, biodiverse areas, a valuable source of seafood, fertile ground for agriculture, and host to ports important for transportation. At least half of the deltas around the world are so-called “wave dominated deltas” – open to the sea and under the...

2012-11-08 00:53:19

Rapid advances in the new and developing field of restoration sedimentology will be needed to protect the world's river deltas from an array of threats, Indiana University Bloomington geologist Douglas A. Edmonds writes in the journal Nature Geoscience. The commentary, published this week in the November issue, addresses the fact that land is disappearing from river deltas at alarming rates. And deltas are extraordinarily important: They are ecologically rich and productive, and they are...

2012-05-07 13:33:00

Ecologists review the human and biological communities of wadis, arroyos, gulches, washes, and other intermittent flows 'When the River Runs Dry' is a familiar song in Australia. Some rivers in the arid center of the continent flow only after a stiff monsoon season, and smaller tributaries all over the country commonly shrink to puddled potholes and dry river beds during the dry season. But rivers also run dry in more temperate climes. Much of the upper reaches and feeder streams of the...

2010-08-09 15:52:00

NOVATO, Calif., Aug. 9 /PRNewswire/ -- Today, as the California Senate considers major new recommendations to increase freshwater flows to the San Francisco Bay-Delta estuary, the Bay Institute released Gone with the Flow, a primer on how flows support a healthy ecosystem, and how the lack of flow is degrading that ecosystem to the point of collapse. The primer is available for free at http://www.bay.org/assets/Gone%20with%20the%20Flow%20WEB%20FINAL.pdf. "Flow is the most important driver...

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2010-03-16 14:44:01

An interdisciplinary team of physicists and geologists led by the University of Pennsylvania has made a major step toward predicting where and how large floods occur on river deltas and alluvial fans. In a laboratory, researchers created a miniature river delta that replicates flooding patterns seen in natural rivers, resulting in a mathematical model capable of aiding in the prediction of the next catastrophic flood. The results appear in the current issue of Geophysical Research Letters....

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2009-09-30 09:54:10

Vegetation and sand found to be essential in stream life In a feat of reverse-engineering, Christian Braudrick of University of California at Berkeley and three coauthors have successfully built and maintained a scale model of a living meandering gravel-bed river in the lab. Their findings point to the importance of vegetation to reinforce the banks and, surprisingly, to the importance of sand in healthy meandering river life. The significance of vegetation for slowing erosion and reinforcing...

2009-09-21 13:06:41

A U.S.-led international scientific team says it has determined that Earth's river deltas are sinking due to human activity, many having recent severe flooding. The researchers, led by University of Colorado-Boulder Professor James Syvitski, found 24 of the world's 33 major deltas are sinking, making them increasingly vulnerable to flooding from rivers and ocean storms and putting tens of millions of people at risk. The study concludes the sinking of deltas from Asia and India to the Americas...


Latest Water streams Reference Libraries

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2009-07-06 18:07:31

A drainage divide, water divide, divide, or watershed is the line that separates neighboring drainage basins. In flat country the divide may be invisible (just a notional line on the ground either side of which water starts its journey to different waterways). While, in hilly country, the divide lies along peaks and ridges. Drainage divides are important geographical, and sometimes political boundaries. Roads and railways often follow divides to minimize slopes and marshes and rivers....

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Word of the Day
maffling
  • To stammer.
  • Present participle of maffle, to stammer.
  • A simpleton.
The word 'maffle' may come from a Dutch word meaning 'to move the jaws' or a French word meaning 'having large cheeks'.