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Stanton Repeat Photography

Mile 210.2, Bottom of Rapid 5, Upstream View from River Left (Stake 3068)

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Stake 3068, 4 June 1889 View Larger Image
4 June 1889
This upstream view from river left shows the wall of a steep chute downstream from Rapid 5. The surface beyond the barren wall supports desert vegetation on a relatively stable slope, and several individuals of Mormon tea are apparent on that surface. Although the channel banks are mostly devoid of riparian vegetation, several netleaf hackberry are present on both banks.
Photo credit: Franklin A. Nims, 57-RS-64, courtesy of The National Archives

Stake 3068, 5 June 1993 View Larger Image
5 June 1993
In the intervening 104 years, a debris flow has deposited new boulders in the chute, and the wall has eroded back, exposing new rocks. Most of the Mormon tea individuals, however, persist on the steep surface. Russian thistle have established in the channel of the chute, and perennial grasses, notably Indian ricegrass, are present within the Mormon tea assemblage. Several netleaf hackberry persist in the view, and tamarisk and other native species, notably long-leaf brickellbush, are present along the shorelines. The water level is about 60,000 ft3/s, and water levels in the view show that the discharge is significantly higher than in 1889.
Photo credit: Robert H. Webb

Stake 3068, 31 July 2010 View Larger Image
31 July 2010
Discharge in the river is about 6,000 ft3/s, and the low water has exposed several sandbars, including the heavily used one downstream from Rapid 5 on the right side (center distance). Most of the Mormon tea persist, except one that was new on the chute wall in 1993, and snakeweed and rubber rabbitbrush have established in the chute channel. Netleaf hackberry individuals persist and newly established plants are apparent in the view, particularly on river left. Several dead tamarisk are visible in this view.
Photo credit: Steve Young

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