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USGS NRP Tucson: Landscape Change in the Southwest

Changes in Riparian Vegetation in Arizona

San Pedro River at Palominas (09470500), January 23, 1981

Image of San Pedro River at Palominas (09470500), January 23, 1981.
Raymond M. Turner This winter view shows small, defoliated cottonwoods and willows that block out most of the background. The channel is deeper, but the floodplain remains relatively free of woody plants. A flood of 22,000 ft3/s occurred in 1940, and another flood of 14,500 ft3/s occurred in 1978.

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