Manmade Flood in Grand Canyon to Save Colorado River


	Manmade Flood in Grand Canyon to Save Colorado River

urbanlife

3-6-2008 3:23 PM

540 views

tags:

grand canyon, ecosystem, colorado river, manmade flood, restore, revitalize

urbanlife says:

A 60-Hour Flood with more than 300,000 gallons of water released per second.

98 percent of the sediment carried by the Colorado River has been lost since Glen Canyon Dam was built in 1963: this flood should help restore some sediment and revitalize the ecosystem of the river.

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margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810"><div align="center"><img src="http://content8.clipmarks.com/blog_cache/www.npr.org/img/4FCB8CAE-7F1F-47DC-93F2-4887372B16D2" alt="3_Grand_Canyon_Flooding.sff.jpg" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810"><div align="center"><img src="http://content9.clipmarks.com/blog_cache/www.npr.org/img/509BA79A-F8DD-4AF1-AAE2-93317F2F2C61" alt="4_Grand_Canyon_Flooding.sff.jpg" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/www.npr.org/img/93A83A8D-1A7D-4028-9F04-555027FF7C13" alt="5_Grand_Canyon_Flooding.sff.jpg" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810">water unleashed from a dam coursed through the Grand Canyon on Wednesday in a flood meant to mimic the natural ones that used to nourish the ecosystem by spreading sediment</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810">More than 300,000 gallons of water per second were released from Lake Powell above the dam near the Arizona-Utah border</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810">high flows of water from the dam to help, in part, to rebuild beaches along the Colorado River that runs through the Grand Canyon</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810"> officials hope the water will leave behind sediment and restore sandbars as it goes back to normal levels</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810">Before the dam was built in 1963, the river was warm and muddy, and natural flooding built up sandbars that are essential to native plant and fish species. The river is now cool and clear, its sediment blocked by the dam.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810"> Since Glen Canyon Dam was built, 98 percent of the sediment carried by the Colorado River has been lost</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.npr.org/templates/story/story.php?storyId=87928810">a 60-hour, controlled flood will help revitalize the Colorado River and replenish backwaters for several of the river's endangered species.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/DCF46897-4719-4FAA-A705-15C21FEC93EF/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>