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Posts Tagged ‘Delta’

Delta Urbanism in New Orleans: Before

Thursday, April 1st, 2010

DESIGN OBSERVER GROUP
Overnight, Hurricane Katrina‚Äôs low barometric pressure and high winds sucked up a dome of gulf water and blew it north and northwestward into the Mississippi Gulf Coast and Louisiana deltaic plain. Shallow coastal depths reverberated the vertically churning water upward, further heightening the dome-shaped, landward-moving surge. Under natural conditions, hundreds of square miles of wetlands would have absorbed or spurned much of the intruding tide. But a century of coastal erosion had cost the region precious impedance, while a labyrinth of man-made navigation, oil, gas and drainage canals served as pathways for the surge to penetrate inland…

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NEW ERA OF INTERBASIN WATER TRANSFERS

Monday, March 15th, 2010

THE WATER REPORT
An interbasin transfer of water is the diversion of water from one water source basin to another. How many of these occur depends on the scale one considers. An interbasin water transfer can take place on the scale of a transfer of water from one small stream to another, or to a transfer from water sources draining to the Pacific Ocean to water sources draining to the Gulf of Mexico. Even if you consider only largescale transfers, trillions of gallons of water are transferred among basins each year to serve hundreds of thousands of farmers and millions of municipal residences. As noted by the US Environmental Protection Agency (EPA), in announcing its rule on the National Pollutant Discharge Elimination System and water transfers (discussed below)

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