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USGS NRP Tucson: Landscape Change in the Southwest

Changes in Riparian Vegetation in Arizona

Gila River at Kelvin (09474000), May 21, 1945

Gila River at Kelvin (09474000) May 21, 1945
W.L. Heckler, #3709 This view, from a hill on the south side of the Gila River, shows the bridge at Kelvin from which discharge measurements are made at high flows. The river flows from right to left in this view and is regulated by Coolidge Dam, completed in 1928. The highest historic flood at this station is 132,000 ft3/s in 1916, and three other floods exceeded 40,000 ft3/s. Floods were less than 40,000 ft3/s for 15 years prior to this photograph. Tamarisk is becoming established in the foreground, and mesquite and cottonwood trees appear on the far bank. Mineral Creek, spanned by a railroad bridge, enters the Gila River at left.

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