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USGS NRP Tucson: Landscape Change in the Southwest

Changes in Riparian Vegetation in Arizona

Gila River at Calva (09466500), March 6, 1932

Image of Gila River at Calva (09466500), March 6, 1932.
W.E. Dickinson, #1053 The Gila River was ravaged by floods in the 1910s and 1920s, including one flood estimated at 100,000 ft3/s in 1916. This upstream view from the railroad bridge at Calva shows a wide, braided channel. An open cottonwood gallery forest appears in the midground at left (channel right), and the low shrubs at right appear to be native willows.

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