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Area | Rancheria Creek |
Topic | Tour: Rancheria Creek Road Field Photos 1995 |
Click on image to enlarge (102K). Road built above Ham Canyon in the Rancheria Creek is has a rocked surface and no in-board ditch, which means its design and construction should not be susceptible to excessive surface erosion or failure. There is also no perched fill on the fill-slope below the road which poses risk of triggering a road failure. Photo by Pat Higgins, June 1995.
Inner gorge failure on mainstem on Rancheria Creek below Ham Canyon Creek stems from inner gorge road location at the top of the slide which triggered it. While the slide has been re-vegetated, it still does not have mature trees and the productivity of the site for growing trees has been crippled. The lack of large trees here profoundly changes the riparian function here and it will not recover for hundreds of years. Photo by Pat Higgins, June 1995.
Logging road can be seen along the inner gorge of Rancheria Creek at upper right in the photo. The bare soil below it suggest that it has failed in the past. Photo by Pat Higgins, June 1995.
Ham Canyon Creek constricted into a narrow, linear channel by the road fill which is at right in the photo. Photo by Pat Higgins, June 1995.
Click on image to enlarge (150K).
Click on image to enlarge (152K).
Click on image to enlarge (132K).
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