The Gunnison River is a tributary of the Colorado River rising on the Western Slope of the Rocky Mountains in southwestern Colorado. The Aspinall Unit above and in the Black Canyon of the Gunnison prior to 2009 was managed to maximize power generation and water storage. In May, 2009, due to successful pursuit of federal water rights by the National Park Service, 16 billion gallons of water were released and flowed through the Black Canyon scouring the bed of the river in a manner mimicing natural spring runoff flushing the river bed. Flow peaked at 7,300 cubic feet per second (cfs) on May 13, 2009.[1]

External links and further readingEdit


  1. Jaffe, Mark. Black Canyon awash in water-rights victory. The Denver Post. 2009-05-15. URL: Accessed: 2009-05-15. (Archived by WebCite® at Please note that the short ("opaque") form of the WebCite® URL should be used only in addition to citing the original URL in your bibliographic reference. Alternatively, please use the "transparent" (but very long!) WebCite® URL:

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