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Press Release 10-189

A River Ran Through It

Nature and humans leaving mark on rivers and streams, affecting aquatic food webs

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Aerial image of the dry Colorado Rive delta near the Sea of Cortez.

A now dry Colorado River delta branches into the Baja/Sonoran Desert near the Sea of Cortez.

Credit: Pete McBride


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Photo of scientist John Sabo navigating a Grand Canyon study site with rapids in the background.

Scientist John Sabo navigates a Grand Canyon study site; the Unkar rapid is dead ahead.

Credit: John L. Sabo


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Photo of water released from the Glen Canyon Dam.

The Glen Canyon Dam releases high flows of Colorado River water.

Credit: Thomas Ross Reeve, Bureau of Reclamation


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Photo of the Colorado River which runs dry two miles below the Morelos Dam.

The Colorado River runs dry on the U.S./Mexican border two miles below the Morelos Dam.

Credit: Pete McBride


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Photo of Grand Canyon wall near the confluence of the little Colorado River and the Colorado River.

The Grand Canyon wall near the confluence of the little Colorado River and the Colorado River.

Credit: John L. Sabo


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Photo of the Agua Fria River in Yauapai County, Arizona.

The Agua Fria River in Yauapai County, Arizona, one of 36 rivers in the recent study.

Credit: John L. Sabo


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Cover of the October 15, 2010 issue of the journal Science.

The cover of the October 15, 2010 issue of the journal Science.

Credit: Copyright AAAS 2010


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